- Type of paper
: Paper in book
Title:
- Authors:
- Srdoč, Dušan (44284)
- Inokuti, Mitio
- Krajcar Bronić, Ines (112976)
Publisher: IAEA (International Atomic Energy Agency)
ISBN: 1011-4289
Year: 1995
Pages: from 547 to 631
Number of references: 228
Language: engleski
Summary: A review of experimental data on the mean energy required
to form an ion pair for various incident ionizaing particles (electrons,
photons, protons, alpha particles, heavy ions) in various gases and gas
mixtures of interest for radiotherapy and radiation reserach is presented.
A theoretical introduction is given. The values of the Fano factor are also
presented. Excitation and ionization yields in liquids and solids are
given.
Keywords: mean energy required to form an ion pair (W), Fano factor (F), electrons, protons, alpha particles, heavy ions, gas mixtures
- Type of paper
: Paper in journal
Title:
- Authors:
- Kimura, Mineo
- Krajcar Bronić, Ines (112976)
- Teng, Thomas T.
- Inokuti, Mitio
Journal: Physical Review A
Number: 5
ISSN: 1050-2947
Volume: 46
Year: 1992
Pages: from 2532 to 2538
Number of references: 9
Language: engleski
Summary: The time evolution of subexcitation electron degradation
spectrain N2-O2 mixtures has been investigated by using thetime-dependent
Spencer-Fano equation. The calculations wereperformed for low-energy
electrons whose energies fall below 6eV. The present study showed that
strong resonances invibrational excitation channels in N2 and O2 greatly
affect thespectrum at early times, and that the stationary spectrum is
morereadily achieved in energy regions with a large stopping power.The
evolution of the characteristic features of spectra of pureN2 and O2 and
their presence to various degrees in mixtures arealso discussed.
Keywords: electron degradation, subexcitation electrons, O2 - N2 mixtures, Spencer-Fano theory
- Type of paper
: Paper in journal
Title:
- Authors:
- Krajcar Bronić, Ines (112976)
- Kimura, Mineo
- Inokuti, Mitio
- Dillon, Michael A.
Journal: Nuclear Instruments and Methods in Physics Research B
ISSN: 0168-583
Volume: 71
Year: 1992
Pages: from 366 to 370
Number of references: 36
Language: engleski
Summary: Data on statistical fluctuations of ionization yield, or
the Fanofactor, for electrons in gas mixtures are systematized.
Empiricalresults indicate that the Fano factor for electrons in a
regularmixture can be represented by the Fano factors for the
purecomponents, taking into account total ionization cross sectionsof
individual components. Good agreement between the calculated Fvalues and
the experimental or theoretical Fano factors isobtained for binary regular
mixtures, while the differencebetween the measured Fano factor and the
calculated one is about10% for tissue-equivalent gas mixtures.
Keywords: electrons, the Fano factor (F), gas mixtures
- Type of paper
: Paper in journal
Title:
- Authors:
- Kimura, Mineo
- Krajcar Bronić, Ines (112976)
- Inokuti, Mitio
Journal: Journal of Chemical Physics
Number: 12
ISSN: 0021-9606
Volume: 94
Year: 1991
Pages: from 8244 to 8251
Number of references: 21
Language: engleski
Summary: The moderation of subexcitation electrons in H2 and D2
isinvestigated by using the Spencer-Fano (SF) equation and
thecontinuous-slowing-down approximation (CSDA). Throughout, wefocus on
isotope effect, i.e., differences between H2 and D2, andconsider electrons
at energies appreciably higher than thermalenergy. In summary, because
vibrational and rotational excitationchannels have lower thresholds in D2,
subexcitation-electronbehavior in D2 at energies below 0.6 eV shows
differentcharacteristics from that in H2. The moderation rate in H2
islarger than that in D2 by a factor of about 1.7. This differenceis close
to but not exactly the factor of 2 expected from anelementary estimate.
Keywords: electron degradation, subexcitation electron, isotope effect, H2 and D2 gases, Spencer-Fano theory
- Type of paper
: Paper in journal
Title:
- Authors:
- Krajcar Bronić, Ines (112976)
- Srdoč, Dušan (44284)
- Obelić, Bogomil (33855)
Journal: Radiation Research
ISSN: 0033-7587
Volume: 125
Year: 1991
Pages: from 1 to 5
Number of references: 14
Language: engleski
Summary: The mean energy required to form an ion pair for 5.89-keV
and1.49-keV photons in argon-methane and argon-butane gas mixtureswas
measured using the proportional counter technique. Themeasured W values in
the mixtures are lower than what is expectedfor regular mixtures, i.e.,
mixtures without an appreciableintermolecular energy transfer between the
mixture components.The additional ionization yield through the
nonmetastable Penningprocesses reaches a maximum abruptly at very low
partialpressures of polyatomic admixtures (alkanes), decreasing
steadilywith higher admixture partial pressure.
Keywords: mean energy to form an ion pair (W), W for electrons and photons, gas mixtures
- Type of paper
: Paper in journal
Title:
- Authors:
- Kimura, Mineo
- Kowari, Ken-ichi
- Inokuti, Mitio
- Krajcar Bronić, Ines (112976)
- Srdoč, Dušan (44284)
- Obelić, Bogomil (33855)
Journal: Radiation Research
ISSN: 0033-7587
Volume: 125
Year: 1991
Pages: from 237 to 242
Number of references: 27
Language: engleski
Summary: Our recent measurements of W values in hydrocarbon gases
revealednonsmooth, oscillatory variation of the W value for
low-energyelectrons as a function of the number of carbon atoms in
normalalkanes. This behavior is contrary to what has been expectedgenerally
and prompted us to undertake the present theoreticalstudy. Calculations
were carried out using thecontinuous-slowing-down approximation for the
degradationspectrum, the binary-encounter theory for cross sections,
andrelevant molecular properties, to explain the behavior of the Wvalue.
The main contributor to the oscilllatory variation is thebranching ratio
for neutral dissociation to ionization ofsuper-excited states. We also
present an interpretation of thetrend of the W value in the series C2H2,
C2H4, and C2H6.
Keywords: electron degradation, mean energy required to form an ion pair (W), polyatomic gases
- Type of paper
: Paper in journal
Title:
- Authors:
- Krajcar Bronić, Ines (112976)
Journal: Journal of Physics B: At. Mol. Opt. Phys.
ISSN: 0953-4075
Volume: 25
Year: 1992
Pages: from 215 to 218
Number of references: 17
Language: engleski
Summary: A nearly linear relation between the Fano factor and the
ratioW/I, where W is the mean energy required to form an ion pair in agas,
is semi-empirically found for high-energy electrons.Deviations from the
linear relation are observed for very lowincident energies. The relation
F=a(W/I)+b is tested on severalexamples. The proposed relation may be used
to estimate the Fanofactor for gases and gas mixtures for which only the W
value isknown.
Keywords: electron degradation, mean energy required to form an ion pair (W), the Fano factor (F), polyatomic gases, gas mixtures, relation between W/I and F
- Type of paper
: Paper in journal
Title:
- Authors:
- Kimura, Mineo
- Krajcar Bronić, Ines (112976)
- Dillon, Michael A.
- Inokuti, Mitio
Journal: Physical Review A
Number: 11
ISSN: 1050-2947
Volume: 45
Year: 1992
Pages: from 7831 to 7837
Number of references: 12
Language: engleski
Summary: Electron-degradation spectra, ionization yields, and the
Fanofactors for Ar-H2 gaseous mixtures are rigorously studied usingthe
Spencer-Fano theory along with a realistic set of electroncollision cross
sections. The study elucidates the relationbetween the Fano factor and
ionization cross sections andindicates principles underlying statistical
fluctuations of theionization yield. Our results show a smooth
compositiondependence of the Fano factor for a mixture. The study reveales
aclose connection between the Fano factor and the magnitude andenergy
dependence of the ionization cross section. A closecorrelation between the
W value and the Fano factor in thespecific case of an Ar-H2 mixture is
obtained.
Keywords: electron degradation, mean energy required to form an ion pair (W), the Fano factor (F), gas mixtures, regular mixtures, Ar - H2 mixtures, Spencer-Fano theory
- Type of paper
: Paper in journal
Title:
- Authors:
- Krajcar Bronić, Ines (112976)
- Horvatinčić, Nada (16101)
- Srdoč, Dušan (44284)
- Obelić, Bogomil (33855)
Journal: Radiocarbon
Number: 3
ISSN: 0033-8222
Volume: 34
Year: 1992
Pages: from 593 to 601
Number of references: 21
Language: engleski
Summary: We have reconstructed the initial activity of
calcareoussediments by 1) measuring the C-14 activity of
recentpre-bomb-test calcareous deposits, 2) calculating the ratio ofthe
C-14 activity of the calcareous sediment to that of theadjacent coeval
wood, and 3) extrapolating C-14 activity of thedeep lacustrine sediment
layers to the surface, assuming aconstant sedimentation rate. We show here
that the uppermostsediment is affected by the global increase of
atmospheric C-14activity due to thermonuclear bomb tests in the early
1960s. C-14activity of submerged aquatic plants showed values similar
toC-14 activity of DIC (Dissolved Inorganic Carbon). Thus, organicresidue
of the sediment cannot be used for reliable C-14 datingbecause of the
unknown fraction of aquatic plant detritus. Theinitial activity obtained in
a case study of the geochronology ofcarbonates in the Plitvice Lakes area,
ranged from 70.5 to 72.2pMC for Lake Prošće sediment, and from 75.9 to 76.7
pMC for LakeKozjak sediment. These values also agree with calculated
valuesbased on the downstream increase of C-14 activity of DIC infreshwater
open to the atmosphere.
Keywords: radiocarbon (C-14), radiocarbon dating, geochronology, initial C-14 activity, lake sediment, tufa
- Type of paper
: Paper in journal
Title:
- Authors:
- Srdoč, Dušan (44284)
- Horvatinčić, Nada (16101)
- Ahel, Marijan
- Giger, Walter
- Schaffner, Christian
- Krajcar Bronić, Ines (112976)
- Petricioli, Donat
- Pezdič, Jože
- Marčenko, Elena
- Plenković-Moraj, Anđelka
Journal: Radiocarbon
Number: 3
ISSN: 0033-8222
Volume: 34
Year: 1992
Pages: from 585 to 592
Number of references: 16
Language: engleski
Summary: Anthropogenic activities that introduce an excess of
nutrientsand other pollutants into rivers and lakes are causingsignificant
changes in their aquatic environment. Excessivenutrients greatly accelerate
eutrophication, and lake marl formedduring eutrophication differs from that
formed in oligotrophicwater.
We analyzed recent sediment cores from Prošće and Kozjak lakeslocated in
Plitvice National Park, central Croatia. Analysesconsisted of C-14 activity
of calcareous lake marl, the ratio ofstable isotopes (delta C-13, delta
O-18), organic compounds inthe sediment and the distribution of diatoms.
Previous C-14activity measurements helped to determine the sedimentation
rateand thus the time period of increased input of nutrients intolakes. We
determined the increased C-14 activity in lakesediments caused by nuclear
bomb effect in recent depth profiles.We attributed the sudden increase in
diatom species, Cyclotellaoperculata unipunctata and Achnantes clevei
rostrata, in theuppermost 5-cm layer, to eutrophication of the lake water.
We performed a molecular characterization of hydrocarbonsisolated from the
sediment, and applied computer-assistedhigh-resolution gas
chromatography/mass spectrometry to estimatecontributions of biogenic,
fossil and pyrolytic hydrocarbons.
Keywords: radiocarbon dating, stable isotope C-13, lake sediment, diatoms, hydrocarbons in sediment
- Type of paper
: Paper in journal
Title:
- Authors:
- Srdoč, Dušan (44284)
- Horvatinčić, Nada (16101)
- Krajcar Bronić, Ines (112976)
- Obelić, Bogomil (33855)
- Sliepčević, Adica (43691)
Journal: Radiocarbon
Number: 1
ISSN: 0033-8222
Volume: 34
Year: 1992
Pages: from 155 to 175
Number of references: 24
Language: engleski
Summary: Radiocarbon analyses made since our previous list (Srdoč et
al,1989) are presented. 175 dates of archeological, geological, and
hydrogeological samples are given.
Keywords: radiocarbon dating, archaeology, hydrogeology, geology,
- Type of paper
: Paper in journal
Title:
- Authors:
- Grgić-Kapelj, Sanja
- Horvatinčić, Nada (16101)
- Miletić, Pavao
Journal: Geološki vjesnik
ISSN: 0016-7924
Volume: 44
Year: 1991
Pages: from 309 to 312
Number of references: 8
Language: engleski
Summary: The aim of this work was to determine the mean residence
time ofgroundwater in Vinkovci and Đakovo at different water-bearinglayers.
The results of radiocarbon and tritium measurements ingroundwater samples
gave some information about recentinfiltration and potential anthropogenic
influence on groundwaterquality.
Keywords: groundwater, tritium, radiocarbon
- Type of paper
: Paper in journal
Title:
- Authors:
- Alvarez i Perez, A.
- Obelić, Bogomil (33855)
- Puig, Anna
- Haye, Denis
Journal: PACT (Journal of the Eur. Study Group on Techniques Applied
to Archaeology)
Volume: 45
Year: 1995
Language: engleski
- Type of paper
: Paper in proceedings
Title: Concentration of C-14 in tree-rings from Plitvice National
Park region
- Authors:
- Obelić, Bogomil (33855)
- Horvatinčić, Nada (16101)
- Krajcar Bronić, Ines (112976)
Proceedings title: Zbornik radova
Language: hrvatski
Place: Zagreb
Year: 1992
Pages: from 247 to 250
Meeting: 1. Simpozij Hrvatskog društva za zaštitu od zračenja
Held: from 11/24/92 to 11/26/92
Summary: The isotope content, including radioactive isotope C-14, of
theorganic matter of an individual tree ring reflects
environmentalradioactivity of the year of its growth at a given
area.Tree-ring analyses were widely introduced for reconstruction ofC-14
activity in the atmosphere. For our C-14 analyses we usedfifty years old
fir tree from Plitvice National Park. Onlycellulose from individual tree
rings was used, because this isthe most reliable chemical constituent of
the wood.
C-14 activities of tree rings shows an excellent agreement withthe C-14
activities of tree rings from a spruce tree felled atMatra region, Hungary,
and of tree rings from a linden treefelled at Krško region, Slovenia.
Comparison with atmosphericC-14 concentration in atmospheric CO2 in the
Northern Hemisphereshows also very good agreement.
Keywords: atmospheric C-14 activity, C-14 activity of tree rings
Other: Str. 251-252 Zbornika sadrže sažetak rada na engleskom
jeziku.
- Type of paper
: Paper in proceedings
Title: Tritium in the atmosphere
- Authors:
- Horvatinčić, Nada (16101)
- Krajcar Bronić, Ines (112976)
- Obelić, Bogomil (33855)
Proceedings title: Zbornik radova
Language: hrvatski
Place: Zagreb
Year: 1992
Pages: from 303 to 306
Meeting: 1. Simpozij Hrvatskog društva za zaštitu od zračenja
Held: from 11/24/92 to 11/26/92
Summary: Tritium concentration in precipitation at Zagreb,
Ljubljana(Slovenia), Rijeka and Plitvice for the period 1981-1991
ispresented in this work. Yearly mean values of both Zagreb andLjubljana
precipitation follow a global decreasing trend of theyearly mean values at
the northern hemisphere. Seasonalvariations at Zagreb, Ljubljana and
Plitvice are similar to thoseat other continental stations from the
temperate zone of thenorthern hemishere.
Tritium concentration in atmospheric water vapor has beenmeasured since
1988 at several sampling points in Zagreb area.Increased tritium
concentration in atmospheric water vapor atcertain sites indicates local
contamination due to local sourcesof tritium.
Keywords: tritium, atmospheric tritium, tritium in precipitation, tritium in atmospheric water vapor
Other: Str. 307-308 Zbornika radova sadrže sažetak rada na
engleskomjeziku.
- Type of paper
: Paper in proceedings
Title: Relation between the mean energy required to form an ion
pair and the Fano factor
- Authors:
- Krajcar Bronić, Ines (112976)
Proceedings title: Zbornik radova
Language: hrvatski
Place: Zagreb
Year: 1992
Pages: from 148 to 151
Meeting: 1. Simpozij Hrvatskog društva za zaštitu od zračenja
Held: from 11/24/92 to 11/26/92
Summary: Analysis of existing experimental and theoretical values of
W(mean energy required to form an ion pair) and the Fano factor(F) for
electrons in various gases and gas mixtures resulted in asimple relation
between the ratio W/I (I is the first ionizationpotential of a gas) and F:
F = a(W/I) + b. The relation holds forelectron energies higher than 50 eV.
The relation is successfullytested on several examples, and it may be used
as a practicalguide for estimation of the Fano factor in gases or gas
mixturesfor which only W values are known.
Keywords: mean energy required to form an ion pair (W), the Fano factor (F), W and F for electrons, relation between W/I and F
Other: Na str. 152-153 Zbornika radova nalazi se i sažetak na
engleskomjeziku.
- Type of paper
: Paper in proceedings
Title:
- Authors:
- Krajcar Bronić, Ines (112976)
- Horvatinčić, Nada (16101)
- Srdoč, Dušan (44284)
- Obelić, Bogomil (33855)
- Editors
- Povinec, Pavel
Proceedings title: Rare Nuclear Processes, World Scientific
Language: engleski
Place: Singapore, Singapore
Year: 1992
ISBN/ISSN: 981-02-0802-2
Pages: from 381 to 386
Meeting: 14th Europhysics Conference on Nuclear Physics
Held: from 10/22/90 to 10/26/90
Summary: The yearly and seasonal variations of tritium concentration
inmonthly precipitation at continental stations Zagreb, Plitviceand
Ljubljana follow the Mid-European pattern, having the highestvalues at
Ljubljana. Tritium concentration in precipitation atRijeka at the north
Adriatic coast is closely correlated withthat at Genoa station. The 12 year
record showed a goodcorrelation between Zagreb and Vienna-Hohe Warte
stations whichhelped reconstructing the past tritium concentration
inprecipitation over Croatia. An increase in tritium concentrationin
precipitation collected after the Chernobyl accident wasrecorded for a
short period of time between 2 - 7 May 1986. Noimpact on the monthly mean
value for May 1986 was observed.Tritium concentration in atmospheric water
vapour in city ofZagreb closely follows that in precipitation. On site of
theRudjer Bošković Institute, Zagreb, tritium concentration in airmoisture
exceeds several times that at other sampling points.
Keywords: tritium, atmospheric tritium, tritium in precipitation, tritium in atmospheric water vapor
- Type of paper
: Paper in proceedings
Title:
- Authors:
- Horvatinčić, Nada (16101)
- Krajcar Bronić, Ines (112976)
- Obelić, Bogomil (33855)
Proceedings title: Symposium Proceedings
Language: engleski
Place: Budapest, Mađarska
Year: 1992
Pages: from 163 to 165
Meeting: International Symposium on Environmental Contamination in Central and Eastern Europe
Held: from 10/12/92 to 10/16/92
Summary: Tritium concentration in integrated monthly precipitation
samplesat Zagreb, Croatia and Ljubljana, Slovenia are presented for
theperiod 1981-1991. Precipitation samples were also collected atPlitvice
National Park, Central Croatia, and at Rijeka, theNorth Adriatic. The
decrease of yearly mean values and seasonalvariations at the continental
stations follow the Mid-Europeanpattern. Tritium concentration in
atmospheric water vapor atseveral sampling points in Zagreb has been
measuredsystematically since 1988. Tritium concentration in air moistureis
slightly higher that that in precipitation and depends on thesampling site.
Tritium in precipitation reflects global changesin the atmosphere while
tritium in atmospheric water vapor ismore influenced by local
contamination.
Keywords: tritium, atmospheric tritium, tritium in precipitation, tritium in atmospheric water vapor
- Type of paper
: Paper in proceedings
Title:
- Authors:
- Obelić, Bogomil (33855)
- Horvatinčić, Nada (16101)
- Krajcar Bronić, Ines (112976)
- Kozak, Kristof
Proceedings title: Symposium Proceedings
Language: engleski
Place: Budapest, Mađarska
Year: 1992
Pages: from 505 to 507
Meeting: International Symposium on Environmental Contamination in Central and Eastern Europe
Held: from 10/12/92 to 10/16/92
Summary: Measurements of C-14 and H-3 in fir tree-rings grown in
Plitvicearea, C. Croatia, were used for reconstruction of the
isotopeconcentration in a "clean-air" area for last three decades.Cellulose
was prepared from separated tree rings and thencombusted for C-14 analysis.
The distribution of C-14 activityin tree rings for period 1960-1986 is
compared with theglobal-scale distribution of atmospheric C-14 and with
dataobtained from spruce tree grown in Matra, N. Hungary. A goodagreement
among all these activities has been observed.
The exchangeable tritium was removed from cellulose. Tritiumactivity of
water produced by combustion of cellulose fromseparate tree rings was
measured and compared to that inprecipitation and in wines. The possible
reasons for increasedtritium activity obtained for the period 1975-1986 are
discussed.
Keywords: tritium and C-14 in atmosphere, tritium and C-14 in tree rings
- Type of paper
: Paper in proceedings
Title: C-14 and archaeology
- Authors:
- Sliepčević, Adica (43691)
- Srdoč, Dušan (44284)
- Editors
- Srejović, Dragoslav
Proceedings title: Arheologija i prirodne nauke
Language: hrvatski
Place: Beograd, Srbija
Year: 1992
Pages: from 97 to 106
Meeting: Arheologija i prirodne nauke
Held: from 10/23/90 to 10/25/90
Summary: In this paper the dating method using the radioactive
isotopecarbon 14, based on measuring the specific activity of samplesthat
contain biogenic carbon of cosmic origin, is described. C-14is measured
using gas-filled proportional counters, liquidscintillation counters or
accelerators. Each of these measuringtechniques requires lengthly
preparation of the sample.
The Radiocarbon laboratory at the Ruđer Bošković Institute isdescribed in
more details. Special attention is given to thesample-taking technique and
storage, as well as to additionalinformation that enable better
interpretation of results.Application of the C-14 dating method in
archaeology isillustrated by several examples.
Keywords: C-14 dating, archaeology, sample preparation, measuring techniques, data base, intercomparison
Other: Rad tiskan ćirilicom.
- Type of paper
: Paper in proceedings
Title:
- Authors:
- Bognar, A.
- Klein, V.
- Mesić, I.
- Culiberg, Metka
- Bogunović, M.
- Sarkotić-Šlat, M.
- Horvatinčić, Nada (16101)
Proceedings title: Proceedings
Language: engleski
Place: Zagreb
Year: 1992
Pages: from 99 to 110
Meeting: International Symposium "Geomorphology and sea"
Held: from 09/22/92 to 09/26/92
Summary: The results of sedimentologic, palinologic, pedologic
andradiologic (C-14) analyses of sand deposits at the south-easternpart of
the Mljet island are presented in the paper. They give agood information on
Quaternary geologic- and geomorphologicfeatures of the area during younger
Wurm and Holocene.
Keywords: sand, sediment, profile, Quaternary
- Type of paper
: Paper in proceedings
Title: Tritium as an indicator of local contamination
- Authors:
- Bistrović, Romana
- Krajcar Bronić, Ines (112976)
- Horvatinčić, Nada (16101)
- Obelić, Bogomil (33855)
- Vekić, Branko
- Editors
- Franić, Zdenko
- Kubelka, Dragan
Proceedings title: Zbornik radova
Language: hrvatski
Place: Zagreb
Year: 1994
ISBN/ISSN: 953-96133-0-2
Pages: from 101 to 105
Meeting: 2. simpozij Hrvatskog društva za zaštitu od zračenja
Held: from 11/23/94 to 11/25/94
- Type of paper
: Summary in proceedings
Title:
- Authors:
- Horvatinčić, Nada (16101)
- Srdoč, Dušan (44284)
- Pezdič, Jože
- Chafetz, Henry
- Sliepčević, Adica (43691)
- Krajcar Bronić, Ines (112976)
- Editors
- Long, Austin
- Kra, Renee S.
Proceedings title: Abstracts, in Radiocarbon 33, No 2 (1991)
Language: engleski
Place: Tucson, Arizona, SAD
Year: 1991
ISBN/ISSN: 0033-8222
Pages: from 209 to 209
Meeting: 14th International Radiocarbon Conference
Held: from 05/20/91 to 05/24/91
Summary: The origin of geothermal water from several hot springs
innorthwest Croatia and east Slovenia has been investigated byisotopic
analyses. Two contradicting hypotheses on the origin ofgeothermal water
were postulated (meteoric vs volcanic), bothbased on previous geological
studies and physico-chemicalmeasurements of geothermal waters. This work is
aimed at solvingthe problem of the origin of geothermal water in the
investigatedregion.
We measured the physico-chemical properties of geothermal waters(t, pH,
conductivity, alkalinity, concentrations of various ions,dissolved CO2 and
O2) as well as the concentration of radioactiveand stable isotopes. We also
analyzed calcareous deposits fromhot springs at Varaždinske toplice spa,
where the process ofcalcium carbonate precipitation is very pronounced. The
resultsof measurements at Varaždinske toplice spa indicate a meteoricorigin
of this geothermal spring.
A comparison of our analyses with chemical and isotopic analysesof
geothermal waters in the USA (Mammoth Hot Springs and PagosaSprings) is
presented.
Keywords: tritium (H-3), radiocarbon (C-14), radiocarbon dating, stable isotopes, H-2, C-13, O-18, hydrogeology, geothermal waters, physico-chemical properties of waters
- Type of paper
: Summary in proceedings
Title:
- Authors:
- Krajcar Bronić, Ines (112976)
- Horvatinčić, Nada (16101)
- Srdoč, Dušan (44284)
- Obelić, Bogomil (33855)
- Editors
- Long, Austin
- Kra, Renee S.
Proceedings title: Abstracts, in Radiocarbon 33, No 2 (1991)
Language: engleski
Place: Tucson, Arizona, SAD
Year: 1991
ISBN/ISSN: 0033-8222
Pages: from 181 to 182
Meeting: 14th International Radiocarbon Conference
Held: from 05/20/91 to 05/24/91
Summary: The initial C-14 activity of dissolved inorganic carbon
(DIC)reflects geochemical processes of groundwater formation andinfluences
the calculation of C-14 age of calcareous deposits.The simplest method of
determining the initial activity would beto measure C-14 activity of either
bicarbonate precipitated fromwater or of calcium carbonate collected in
sediment traps.However, the present C-14 activity of DIC cannot be used
tocorrect the age of old carbonate sediments because of thecontamination of
ground and surface waters with bomb-producedC-14. We describe several
methods of experimental determinationof the initial activity, which we used
in a case study ofgeochronology of carbonates in the Plitvice Lakes area.
Keywords: C-14 dating, geochronology, initial C-14 activity, DIC, carbonate sediments
- Type of paper
: Summary in proceedings
Title:
- Authors:
- Srdoč, Dušan (44284)
- Horvatinčić, Nada (16101)
- Ahel, Marijan
- Giger, Walter
- Schaffner, Christian
- Petricioli, Donat
- Pezdič, Jože
- Marčenko, Elena
- Plenković-Moraj, Anđelka
- Editors
- Long, Austin
- Kra, Renee S.
Proceedings title: Abstracts, in Radiocarbon 33, No 2 (1991)
Language: engleski
Place: Tucson, Arizona, SAD
Year: 1991
ISBN/ISSN: 0033-8222
Pages: from 246 to 246
Meeting: 14th International Radiocarbon Conference
Held: from 05/20/91 to 05/24/91
Summary: Recent sediment cores, 30 cm long, from Prošće and Kozjak
lakeslocated in Plitvice National Park, central Croatia, were analyzedfor
C-14 activity of lake marl and organic carbon in thesediment, the ratio of
stable isotopes, and the distribution ofdiatoms. The abrupt increase of a
population of diatom speciesCyclotella operculata unipunctata and Achnantes
clevei rostratain the uppermost 5 cm layer was attributed to eutrophication
ofthe lake water. C-14 activity measurements helped to determinethe time
period of an increased input of nutrients into lakes.The increase of the
C-14 activity in lake sediment due to thebomb effect was used for age
determination of the depth profiles.A molecular characterization of the
hydrocarbons isolated fromthe sediment was also performed.
Keywords: C-14 dating, lake sediment, stable isotopes, diatoms, hydrocarbons in sediment
- Type of paper
: Summary in proceedings
Title:
- Authors:
- Kimura, Mineo
- Krajcar Bronić, Ines (112976)
- Inokuti, Mitio
- Editors
- Ljubičić, Ante
Proceedings title: Summary Transactions
Language: engleski
Place: Zagreb
Year: 1991
Pages: from 40 to 40
Meeting: 5th International Symposium on Radiation Physics
Held: from 06/10/91 to 06/14/91
Summary: We have conducted a comparative study of subexcitation
electrons(energy below 8 eV) in H2 and D2 gases by using the
Spencer-Fanotheory and its simplified version, the continuous-slowing-down
approximation. The study focuses on differences between H2 andD2 (the
isotope effect). From an elementary estimate, one wouldexpect the isotope
effect to be about a factor of two for variousphysical quantities relevant
to electron degradation. Ourdetailed analysis, however, shows that the
isotope effect isabout 1.7 at energies where no significant differences
occur inthe cross sections for the two gases. The isotope effect is
verypronounced below 0.1 eV, where the cross sections becomeincreasingly
different.
Keywords: electron degradation, subexcitation electrons, H2 and D2 gases, Spencer-Fano theory
- Type of paper
: Summary in proceedings
Title:
- Authors:
- Kimura, Mineo
- Krajcar Bronić, Ines (112976)
- Inokuti, Mitio
- Dillon, Michael A.
- Editors
- Ljubičić, Ante
Proceedings title: Summary Transactions
Language: engleski
Place: Zagreb
Year: 1991
Pages: from 39 to 39
Meeting: 5th International Symposium on Radiation Physics
Held: from 06/10/91 to 06/14/91
Summary: This is the first report on the statistical fluctuations
ofionization yield, or the Fano factor, for gas mixtures based on arigorous
treatment of the Spencer-Fano theory.
The Fano factor for the ionization of the Ar-H2 mixture forelectrons of
energy 1 keV is a smooth function of the mixturecomposition and shows no
sign of structure or anomaly at anycomposition.
Keywords: electron degradation, the Fano factor (F), gas mixtures, regular mixtures, Ar-H2 mixture, Spencer-fano theory
- Type of paper
: Summary in proceedings
Title:
- Authors:
- Kimura, Mineo
- Krajcar Bronić, Ines (112976)
- Inokuti, Mitio
- Editors
- Chapman, J.D.
- Dewey, W.C.
- Whitmore, G.F.
Proceedings title: Radiation Research: A twentieth-Century Perspective
Language: engleski
Place: San Diego, California, SAD
Year: 1991
ISBN/ISSN: 0-12-168561-6
Pages: from 116 to 116
Meeting: 9th International Congress of Radiation Research
Held: from 07/07/91 to 07/12/91
Summary: The subexcitation electrons having energy 8 eV and 0.6 eV
ingaseous H2 and D2 have been studied by using the Spencer-Fanotheory and
its simplified version of the continuous-slowing-downapproximation (CSDA).
The CSDA gives a mean value of the exactSpencer-Fano degradation spectrum,
except in the very low energyregion, where the ratio of the energy loss to
the kinetic energybecomes large. In the same energy region differences
between thetwo gases (H2 and D2) become very pronounced because of
theincreasingly different cross sections.
Keywords: electron degradation, Spencer-Fano theory, subexcitation electrons, H2 and D2 gases
- Type of paper
: Summary in proceedings
Title:
- Authors:
- Kimura, Mineo
- Krajcar Bronić, Ines (112976)
- Inokuti, Mitio
- Editors
- McCarty, I.E.
- MacGillivray, W.R.
- Standage, M.C.
Proceedings title: Abstracts of Contributed Papers
Language: engleski
Place: Brisbane, Australija
Year: 1991
Pages: from 224 to 224
Meeting: 17th International Conference on the Physics of Electronic and Atomic Collisions
Held: from 07/10/91 to 07/16/91
Summary: The present study treats subexcitation electrons in
molecularhydrogen and focuses on isotope effects, i.e., differencesbetween
H2 and D2. The analysis shows that the isotope effect is1.7 at energies
where no significant differences occur in thecross sections for the two
gases. The cross sections becomeincreasingly different at very low energy.
Hence, the isotopeeffect is very pronounced below 0.1 eV.
Keywords: electron degradation, subexcitation electrons, Spencer-Fano theory, H2 and D2 gases
- Type of paper
: Summary in proceedings
Title:
- Authors:
- Krajcar Bronić, Ines (112976)
- Srdoč, Dušan (44284)
Proceedings title: Book of Abstracts; Part I: Oral presentations
Language: engleski
Place: Berlin, Njemačka
Year: 1991
Pages: from 41 to 41
Meeting: 7th Symposium on Neutron Dosimetry
Held: from 10/14/91 to 10/18/91
Summary: A short review of models for energy dissipation and
calculationof the mean energy required to produce an ion pair (W) in
regulargas mixtures is presented. Generalized formulae for more thantwo gas
components in a mixture are given. Recently published Wvalues for
electrons, protons and alpha-particles intissue-equivalent gas mixtures and
their pure constituent gasesare compiled. The W values for particles of
various incidentenergies in TE gases are calculated according to the
presentedmodels and compared with the measured W values. In methane-TE
gasall models predict W values within 2% for all particles. The Wvalues
calculated according to the simplest model inpropane-based TE gas are much
higher than the measured W valuesfor all incident particles over the whole
energy range. Theapplicability of the described models to various gas
mixturesis discussed.
Keywords: electron degradation, mean energy required to form an ion pair (W), gas mixtures, regular mixtures, tissue-equivalent gas mixtures, models for W calculation
- Type of paper
: Summary in proceedings
Title:
- Authors:
- Obelić, Bogomil (33855)
- Horvatinčić, Nada (16101)
- Krajcar Bronić, Ines (112976)
Proceedings title: Extended synopses
Language: engleski
Place: Beč, Austrija
Year: 1993
Pages: from 7 to 8
Meeting: International Symposium on Applications of Isotope Techniques in Studying Past and Current Environmental Changes in the Hydrosphere and the Atmosphere
Held: from 04/19/93 to 04/23/93
Summary: In this work the results of radiocarbon measurements
inatmospheric CO2 and in tree rings, as well as tritiumconcentration in
precipitation are presented.
Keywords: C-14 in atmospheric CO2, C-14 in tree rings, atmospheric tritium, tritium in precipitation
- Type of paper
: Summary in proceedings
Title:
- Authors:
- Horvatinčić, Nada (16101)
- Srdoč, Dušan (44284)
- Obelić, Bogomil (33855)
- Krajcar Bronić, Ines (112976)
Proceedings title: Extended Synopses
Language: engleski
Place: Beč, Austrija
Year: 1993
Pages: from 82 to 83
Meeting: International Symposium on Applications of Isotope Techniques in Studying Past and Current Environmental Changes in the Hydrosphere and the Atmosphere
Held: from 04/19/93 to 04/23/93
Summary: Systematic physico-chemical measurements of water in the
area ofPlitvice Lakes and Krka River show which conditions for
calciteprecipitation must be fulfilled in an aquatic systems.
Stableisotope content (C-13 and O-18) in travertines confirms
biogenicorigin of carbon, and indicates fairly constant climaticconditions
during the sedimentation process over a long period oftime. C-14 dating
showed that most of the travetine samples along the river banks range in
age from recent to 7000-8000 yearsBP. The age of old travertine deposits
was determined by230Th/234U and 234U/238U method. It turned out that theage
of old travertine coincides with that of warm, humidinterglacials, mostly
oxygen stage 5 and possible 11 and 12.
Keywords: C-14 dating, stable isotopes C-13 and O-18, physico-chemical characteristics of freshwater, travertine
- Type of paper
: Summary in proceedings
Title:
- Authors:
- Horvatinčić, Nada (16101)
- Krajcar Bronić, Ines (112976)
- Obelić, Bogomil (33855)
Proceedings title: Sinopsisi - Abstracts
Language: engleski
Place: Zagreb
Year: 1993
Pages: from 402 to 402
Meeting: Second Symposium: Ecologically rational development of chemical technologies
Held: from 02/10/93 to 02/11/93
Summary: Tritium activity measurements in precipitation at Zagreb
with anemphasis on the "Chernobyl period" in 1986, in atmospheric
watervapor and in Sava River are presented.
Keywords: atmospheric tritium, tritium in precipitation, tritium in Sava River
- Type of paper
: Summary in proceedings
Title:
- Authors:
- Obelić, Bogomil (33855)
- Horvatinčić, Nada (16101)
- Krajcar Bronić, Ines (112976)
Proceedings title: Sinopsisi - Abstracts
Language: engleski
Place: Zagreb
Year: 1993
Pages: from 408 to 408
Meeting: Second Symposium: Ecologically rational development of chemical technologies
Held: from 02/10/93 to 02/11/93
Summary: C-14 activities of atmospheric CO2, leaves, annual plants
andtree rings are presented.
Keywords: C-14 in atmospheric CO2, C-14 in tree rings, C-14 in annual plants
- Type of paper
: Summary in proceedings
Title: Calcite precipitation in karst waters
- Authors:
- Horvatinčić, Nada (16101)
- Srdoč, Dušan (44284)
Proceedings title: Sinopsisi - Abstracts
Language: hrvatski
Place: Zagreb
Year: 1993
Pages: from 258 to 0
Meeting: XIII. Skup hrvatskih kemičara
Held: from 02/08/93 to 02/10/93
Summary: Systematic measurement of physico-chemical conditions for
calciteprecipitation in freshwaters was performed in the Plitvice
Lakesarea, and some measurements were performed also at other karst springs
and rivers. There are considerable differences in valuesof the measured
quantities (temperature, pH, conductivity,alkalinity, concentration of
calcium, magnezium, oxygen and CO2)among various freshwaters. It is
concluded that precipiation ofcalcite in form of travertine is possible if
certainphysico-chemical conditions are fulfilled.
Keywords: physico-chemical characteristics of freshwater, karst waters, travertine
- Type of paper
: Summary in proceedings
Title:
- Authors:
- Kimura, Mineo
- Krajcar Bronić, Ines (112976)
- Inokuti, Mitio
Proceedings title: Proceedings
Language: engleski
Place: Yokohama, Japan
Year: 1994
Pages: from 31 to 32
Meeting: 2nd International Conference on Reactive Plasmas
Held: from 01/19/94 to 01/21/94
- Type of paper
: Summary in proceedings
Title:
- Authors:
- Krajcar Bronić, Ines (112976)
- Editors
- Krajcar Bronić, Ines (112976)
Proceedings title: Proceedings
Language: engleski
Place: Nashville, Tennessee, USA
Year: 1994
Pages: from 243 to 243
Meeting: 42th Annual Meeting of the Radiation Research Society
Held: from 04/29/94 to 05/04/94
- Type of paper
: Summary in proceedings
Title: Interaction of low-energy radiation and gases;
subexcitation electrons
- Authors:
- Krajcar Bronić, Ines (112976)
- Obelić, Bogomil (33855)
- Srdoč, Dušan (44284)
Proceedings title: Proceedings
Language: hrvatski
Place: Zagreb
Year: 1994
Pages: from 57 to 58
Meeting: 1. znanstveni sastanak Hrvatskog fizikalnog društva
Held: from 09/28/94 to 09/30/94
- Type of paper
: Summary in proceedings
Title:
- Authors:
- Krajcar Bronić, Ines (112976)
Proceedings title: Proceedings
Language: engleski
Place: Chalk River, Ontario, Canada
Year: 1994
Pages: from 71 to 71
Meeting: 1st International Workshop on Advances in Radiation Measurements
Held: from 10/02/94 to 10/06/94
- Type of paper
: Summary in proceedings
Title:
- Authors:
- Horvatinčić, Nada (16101)
- Srdoč, Dušan (44284)
- Krajcar Bronić, Ines (112976)
- Pezdič, Jože
- Grgić-Kapelj, Sanja
- Sliepčević, Adica (43691)
Proceedings title: Proceedings, IAEA-SM-336
Language: engleski
Place: Beč, Austrija
Year: 1995
Pages: from 202 to 204
Meeting: 1st International Symposium on Isotopes in Water Resources Management
Held: from 03/20/95 to 03/24/95
- Type of paper
: Summary in proceedings
Title:
- Editors
- Krajcar Bronić, Ines (112976)
- Kimura, Mineo
- Inokuti, Mitio
Proceedings title: Proceedings
Language: engleski
Place: San Jose, California, USA
Year: 1995
Pages: from 217 to 217
Meeting: 43th Annual Meeting of the Radiation Research Society
Held: from 04/01/95 to 04/06/95
- Type of paper
: Summary in proceedings
Title:
- Authors:
- Krajcar Bronić, Ines (112976)
- Editors
- Hagen, U.
- Jung, H.
- Streffer, C.
Proceedings title: Proceedings, Vol.1
Language: engleski
Place: Wuerzburg, Njemačka
Year: 1995
ISBN/ISSN: 3-00-000130-1
Pages: from 116 to 116
Meeting: 10th International Congress of Radiation Research
Held: from 08/27/95 to 09/01/95
- Type of paper
: Summary in proceedings
Title:
- Authors:
- Krajcar Bronić, Ines (112976)
- Kimura, Mineo
- Inokuti, Mitio
- Editors
- Hagen, U.
- Jung, H.
- Streffer, C.
Proceedings title: Proceedings, Vol.1
Language: engleski
Place: Wuerzburg, Njemačka
Year: 1995
ISBN/ISSN: 3-00-000130-1
Pages: from 111 to 111
Meeting: 10th International Congress of Radiation Research
Held: from 08/27/95 to 09/01/95
- Type of paper
: Summary in proceedings
Title:
- Authors:
- Obelić, Bogomil (33855)
- Srdoč, Dušan (44284)
- Marino, Stephen A.
Proceedings title: Proceedings, Vol.1
Language: engleski
Place: Wuerzburg, Njemačka
Year: 1995
ISBN/ISSN: 3-00-000130-1
Pages: from 361 to 361
Meeting: 10th International Congress of Radiation Research
Held: from 08/27/95 to 09/01/95
Summary: The statistical distribution of the number of ion pairs per
ionizing event in small volume simulating a tissue sphere was obtained by
applying an iterative deconvolution method to experimental spectra measured
by exposing a Rossi-type spherical proportional counter to Co-60 gamma
radiation.
- Type of paper
: Summary in proceedings
Title:
- Authors:
- Krajcar Bronić, Ines (112976)
Proceedings title: Proceedings
Language: engleski
Place: Pariz, Francuska
Year: 1995
Meeting: 8th Symposium on Neutron Dosimetry
Held: from 11/13/95 to 11/17/95
- Type of paper
: Summary in proceedings
Title:
- Authors:
- Babić, Lj.
- Lacković, D.
- Horvatinčić, Nada (16101)
Proceedings title: Abstracts
Language: engleski
Place: Zagreb
Year: 1995
Pages: from 4 to 4
Meeting: 3rd Internat. Karstological School "Classical Karst"
Held: from 06/27/95 to 06/30/95
- Type of paper
: Summary in proceedings
Title:
- Authors:
- Krajcar Bronić, Ines (112976)
- Kimura, Mineo
- Inokuti, Mitio
Proceedings title: Proceedings
Language: engleski
Place: Hoboken, New Jersey, SAD
Year: 1995
Meeting: 22nd International Conference on Phenomena in Ionized Gases
Held: from 07/31/95 to 08/05/95
- Type of paper
: Ph.D.
Title:
Faculty: Institut "Rudjer Bošković" Sveučilište u Zagrebu
Author: KRAJCAR-BRONIĆ INES
Date of defense: 06/08/93
Language: engleski
Number of pages: 183
Summary: The work presents the results of both the theoretical and
theexperimental investigation of interaction of low-energy electronsand
photons with gas mixtures.
Calculation of the W value (mean energy required to form an ionpair) and
the Fano factor (F) in a regular mixture of Ar and H2by the Spencer-Fano
method shows that both W and F are smoothfunctions of the mixture
composition, and that different totalionization cross sections of the gas
components determine theenergy partition in regular gas mixtures. A new
formula forcalculating the Fano factor in a regular mixture is proposed
andtested on several gas mixtures. The W and F values forisobutane-based
tissue-equivalent gas mixture are calculated andexperimentally determined
here for the first time.
A linear relation between F and the ratio W/I (I is the firstionization
potential) for high-energy electrons is obtained andtested on several
examples.
In the experimental part of the work various aspects ofinteraction of 5.9
keV photons with the argon - isobutanemixtures are studied. These are: gas
amplification, relativevariance of single electron spectra (f), mean energy
W, Fanofactor, and energy resolution. It is found that all theinvestigated
quantities depend on both the concentration fractionof isobutane in the
mixture and on the total pressure of themixture. When the partial pressure
of isobutane is high enough,the mixture behaves as the regular one. When
the partial pressureof isobutane is lower than 60 mbar, the W and the F
valuesdecrease, but the relative variance f increases. As the finalresult,
the expected improvement of the energy resolution inirregular gas mixtures
has not been observed.
Keywords: mean energy to form an ion pair (W), the Fano factor (F), single electron spectra, energy resolution, gas mixtures, regular mixtures, tissue-equivalent mixtures, Ar - H2 mixture, Ar - isobutane mixture, relation between W/I and F
- Type of paper
: Mentorship
Title: The mean energy required to form an ion pair and the Fano
factor in gas mixtures with an emphasis on argon - isobutane mixture
Faculty: Institut "Rudjer Bošković" Sveučilište u Zagrebu
Mentor: OBELIĆ BOGOMIL
Date of defense: 06/08/93
Number of pages: 183
Author: Krajcar Bronić Ines
Degree level: Ph.D.
- Type of paper
: Mentorship
Title: Age determination of tufa by C-14 dating method
Faculty: Kem.-tehnološki studij, FKIT Sveučilište u Zagrebu
Mentor: HORVATINČIĆ NADA
Date of defense: 03/22/93
Number of pages: 51
Author: Bistrović dipl. inž. Romana
Degree level: D.A.
- Type of paper
: Data base
Title:
- Authors:
- Obelić, Bogomil (33855)
Institution administrator: Institut "Ruđer Bošković
HW platform: PC AT/386
Operating system: DOS 5.0
Base format: dBase III Plus
Number of entries: 3000
- Type of paper
: Survey/Study
Title: Isotopic research on underground water in Slovenia and
Italy: basin of Natisone river
- Authors:
- Barbina, Valerio
- Quarin, L.
- Obelić, Bogomil (33855)
- Horvatinčić, Nada (16101)
- Krajcar Bronić, Ines (112976)
Ordering party: CRAD (Centro di ricerca applicata e documentazione)
Institution depot: CRAD (Centro di ricerca applicata e documentazione)
Year: 1994
Number of pages: 62
Language: talijanski
Other: Rapporto tecnico n.39, novembre 1994
- Type of paper
: Invited lecture
Title:
Institution: CRAD (Centro di ricerca applicata e documentazione)
Year: 1994
- Type of paper
: Invited lecture
Title:
Institution: CRAD (Centro di ricerca applicata e documentazione)
Year: 1994
- Type of paper
: Invited lecture
Title:
Institution: CRAD (Centro di ricerca applicata e documentazione)
Year: 1994
- Type of paper
: Invited lecture
Title:
Institution: University of Bern, Institute of Physics
Year: 1994
- Type of paper
: Invited lecture
Title: Thermoluminiscen dating method
Institution: Museu de la ciencia
Year: 1991
- Type of paper
: Invited lecture
Title: Physico-chemical and isotopic measurements of waters at
Plitvice lakes
Institution: Hrvatska akademija znanosti i umjetnosti
Year: 1993
- Type of paper
: Other
Title: Yields of ionization and excitation in irradiated matter
- Authors:
- Srdoč, Dušan (44284)
- Inokuti, Mitio
- Krajcar Bronić, Ines (112976)
- Waibel, Eberhard
- Hatano, Yoshihiko
- Kaplan, Ilya
Type of work: Brookhaven National Laboratory Report No. BNL-48079
Language: engleski
Summary: In this work all available data on W values (the mean
energyrequired to form an ion pair) and the Fano factor (F) forelectrons,
photons, protons, alpha-particles and heavier ions invarious gases
frequently used in microdosimetry, dosimetry andradiotherapy (Ar, H2, N2,
CO2, CH4, propane, butane, watervapor, tissue-equivalent gas mixtures), in
liquids (liquid raregases, organic liquids, water) and in solids
(semiconductors)are also presented, as well as experimental methods.
Keywords: mean energy required to form an ion pair (W), the Fano factor (F), polyatomic gases, gas mixtures, tissue-equivalent gas mixtures, liquids, solids, electrons, protons, alpha-particles
- Type of paper
: Other
Title:
- Authors:
- Srdoč, Dušan (44284)
- Marino, Stephen A.
Type of work: Brookhaven National Laboratory Report BNL-49779
Language: engleski
Summary: Tissue spheres 0.25, 0.5, 1.0, 2.0, 4.0, and 8.0
micrometers indiameter were simulated using a wall-less spherical
counterfilled with a propane-based tissue-equivalent gas.Microdosimetric
spectra corresponding to these site sizes weremeasured for five neutron
energies (0.22, 0.44, 1.5, 6, and 14MeV) and the related mean values yF and
yD were calculated forseveral site sizes and neutron energies. An elaborate
calibrationtechnique combining soft x-rays, a Fe-55 photon source, and
aCm-244 collimated source of alpha particles was used throughoutthe
measurement. The spectra and their mean values are comparedwith
theoretically calculated values for ICRU tissue. Theagreement between the
calculated and the measured data is good inspite of a systematic
discrepancy, which could be attributed, inpart, to the difference in
elemental composition between thetissue-equivalent gas and plastic used in
the counter, and theICRU standard tissue used in the calculation.
Keywords: microdosimetry, neutrons
- Type of paper
: Other
Title: Radon in geothermal water samples and in carbonate samples
- Authors:
- Medanović-Ukrainczyk, Tatjana
Type of work: Diplomski rad, PMF - Fizika, Sveučilište u Zagrebu, obrana 20.11.1991.
Language: hrvatski
Other: Voditelj rada: Dr. Bogomil Obelić;
- Type of paper
: Other
Title: Age determination of travertine samples by the radiocarbon
C-14 method
- Authors:
- Bistrović, Romana
Type of work: Diplomski rad, Kem.-tehnološki studij, FKIT, Sveuč.u Zagrebu; obrana 22.03.1993.
Language: hrvatski
Other: Voditelj rada: Dr. Nada Horvatinčić
Obrana rada: 22.03.1993.
- Type of paper
: Other
Title:
- Authors:
- Obelić, Bogomil (33855)
- Krajcar Bronić, Ines (112976)
- Srdoč, Dušan (44284)
Type of work: Final report, Joint project JF-802/NSF, Sept. 1, 1988 - Sept. 1, 1991
Language: engleski
Summary: The results of the three-year joint scientific
investigationbetween the Ruđer Bošković Institute and Argonne
NationalLaboratory, Argonne, Ill, USA, are presented.
Keywords: mean energy required to form an ion pair (W), the Fano factor (F)
Other: Glavni istraživači: Dr. Bogomil Obelić
Dr. Mitio Inokuti
- Type of paper
: Other
Title:
- Authors:
- Srdoč, Dušan (44284)
- Obelić, Bogomil (33855)
- Krajcar Bronić, Ines (112976)
Type of work: Final report, Research Contract 5293/R1/RB, IAEA, Dec. 15, 1988 -Dec. 15, 1991
Language: engleski
Summary: The results of investigation performed under the
ResearchContract 5293/R1/RB between the Ruđer Bošković Institute and
theInternational Atomic Energy Agency, Vienna, are presented.
Keywords: mean energy required to form an ion pair (W), the Fano factor (F), gas mixtures, tissue-equivalent gas mixtures
Other: Glavni istraživač: Dr. Dušan Srdoč
- Type of paper
: Other
Title:
- Authors:
- Horvatinčić, Nada (16101)
- Srdoč, Dušan (44284)
- Obelić, Bogomil (33855)
- Krajcar Bronić, Ines (112976)
- Chafetz, Henry
Type of work: Final Report, JF-800/NSF, Sept. 1, 1988 - Sept. 1, 1992
Language: engleski
Summary: The results of investigation performed under the Joint
scientificproject JF-800/NSF between the Ruđer Bošković Institute and
theUniversity of Houston, Houston, TX, USA, are presented.
Keywords: travertine, C-14 dating, origin of travertine
Other: Glavni istraživači: Dr. Nada Horvatinčić i Dr. Henry Chafetz
- Type of paper
: Other
Title: Laboratory handbook for 14C and 3H measurements
- Authors:
- Bistrović, Romana
- Hernaus, Elvira
- Horvatinčić, Nada (16101)
- Krajcar Bronić, Ines (112976)
- Obelić, Bogomil (33855)
Type of work: Priručnik
Language: hrvatski
