SVIBOR - Project code: 1-03-052

MINISTRY OF SCIENCE AND TECHNOLOGY

Strossmayerov trg 4, HR - 10000 ZAGREB
tel.: +385 1 459 44 44, fax: +385 1 459 44 69
E-mail: ured@znanost.hr

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Project code: 1-03-052


LASER SPECTROSCOPY OF EXCIMERS AND EXCIPLEXES


Main researcher: PICHLER, GORAN (37152)


Assistants
Type of research: basic
Duration from: 01/01/91. to 12/31/95.
Papers on project (total): 87
Papers on project quoted in Current Contents: 23
Institution name: Institut za fiziku, Zagreb (35)
Department/Institute: Department of physics of ionised gases
Address: Bijenička 46, P.O.Box 304
City: 10000 - Zagreb, Croatia
Communication
Phone: 385 (0)1 271 211
Phone: 385 (0)1 421 156
E-mail: milosevic@olimp.irb.hr
E-mail: pichler@olimp.irb.hr
E-mail: azinovic@olimp.irb.hr
Summary: Study of metal and intermetallic excimers and exciplexes by analysis of their spectra and other physical and chemical manifestations, discovers their structure, properties and various collision processes connected with their formation. We use and develop new methods of linear and non-linear laser spectroscopy in nanosecond region. We prepare the molecules as neutrals or ions in vapor mixtures or during the expansion of vapor into vacuum, with resonant or non-resonant laser radiation present. We also use laser ablation of metal amalgams to produce plasmas. Particularly we investigate simple systems like LiZn, NaZn, LiH, NaH or Li2*+Zn and Na*+H2. We interprete observed spectra by using the theoretical methods, calculation of potential energy surfaces and quantum mechanical spectral simulations. Results of our basic research could find applications in development of new coherent (lasers) or non-coherent (high-pressure lamps) light sources. We achieved new results in blue laser curing of composite materials for dental purposes. The powerful pulsed blue lasers have shown remarkable improvement in the degree of conversion and the lowering of the shrinkage. In addition to this our most recent achievements in linear and nonlinear laser spectroscopy enabled us to start reaserach of NO in internal combustion engines. Many new energy transfer processes have been studied in the last few years of this project which now enable us to apply the basic results into the new development of powerful new light soures and lasers.

Keywords: Laser spectroscopy, Diatomic molecules, Excimers, Diffuse spectra, Photochemical reactions, Energy transfer, Molecular beams, Laser ablation, Laser curing of composites

Research goals: Study of structure, properties and interaction of atoms and small molecules with methods of pulsed laser spectroscopy. Study of dynamics of radiative and collisional processes. Development of molecular beam technique with application of laser ablation of metal amalgams. Develpment of temporarlly resolved, ultrafast and non-linear spectroscopy. Application of those methods in study of new molecules of interest in astrophysics, ecology, environment, biology, medicine and energetics.

COOPERATION - PROJECTS


  1. Name of project: CI1*-0525-C(MB) Intermetallic excimers molecules as candidates for new lasers
    Name of institution: Max-Planck-Institut fuer Stroemungsforschung, Goettingen Department of Chemistry, Gorlaeus Laboratory, University Leiden
    City: 37073 - Goettingen, Njemacka

  2. Name of project: Linearna i nelinearna spektroskopija alkalijskih para
    Name of institution: Institute of opto-electronics, Harbin Institute of technology
    City: Harbin, Kina

  3. Name of project: Laser Holography and Spectroscopy of Plasmas, Projekt radne zajednice Alpe-Jadran, 1989-1991
    Name of institution: University Graz
    City: Graz, Austrija

  4. Name of project: Ugovor o znanstveno-tehnickoj suradnji
    Name of institution: OKB fiziceskogo instituta im P.N.Lebedeva (1990-1992)
    City: Moskva, Rusija

  5. Name of project: CEEPUS Austria - 21 CEEPUS
    Name of institution: TU-Graz, IFS-Zagreb, Sveučilište u Sofiji
    City: Graz, Austrija

  6. Name of project: Quantum-mechanically Complete Experiments with State-prepared Alkali Atoms
    Name of institution: Fakultet fuer Physik, Uni-Bielefeld, Prof. H. Lutz, Volkswagen Stiftung
    City: Bielefeld, Njemačka

COOPERATION - INSTITUTIONS


  1. Name of institution: Institut fuer Experimentalphysik, Technische Universitaet Graz, Austria
    Type of institution: University/Faculty
    Type of cooperation: Joint publishing of scientific papers
    City: Graz, Austrija

  2. Name of institution: Department of Physics, University of Connecticut, USA
    Type of institution: University/Faculty
    Type of cooperation: Joint publishing of scientific papers
    City: Storrs, Connecticut, USA

  3. Name of institution: Max-Planck-Institut fuer Quantenoptik
    Type of institution: State institute
    Type of cooperation: Joint publishing of scientific papers
    City: Muenchen, Njemacka

  4. Name of institution: Universita di Pisa
    Type of institution: University/Faculty
    Type of cooperation: Joint publishing of scientific papers
    City: Pisa, Italija

  5. Name of institution: Stomatološki Fakultet u Zagrebu
    Type of institution: University/Faculty
    Type of cooperation: Joint publishing of scientific papers
    City: 10000 - Zagreb, Croatia
Other information about the project.
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