Janis Guntis BERZINS

Dr. habil. phys. Janis Guntis BERZINS Vice-Director “RAPA” Ltd. Head of Laboratory, Institute of Solid State Physics, University of Latvia Miera iela 31 Salaspils, LV 2169 Latvia Phone: +371 794 5840 Fax: +371 790 1211 E-mail: jberzins@latnet.lv

Born: January 31, 1936, Riga, Latvia

• Nuclear Structure
• Nuclear Reactions
• Radioecology
• Application of the Methods of Nuclear Spectroscopy for Environmental Control

I am working in the area of experimental nuclear spectroscopy. My main scientific interests are devoted to the investigation of nuclear structure in nuclear reactions in the mass region A=140-194. I has participated in developing of the experimental equipment for the nuclear structure investigation in the nuclear reactions at the Latvian nuclear reactor as well as in investigation of more than 20 nuclei in co-operation with many laboratories in Europe and USA. Since 1986 we are active in the field of application of some nuclear spectroscopic methods to ecological problems. During the last years our laboratory have performed measurements for the determination of radionuclide concentration in aerosols, precipitation, water and sediments in Latvia.

Languages: German, English, Russian, Latvian, French.

• University of Latvia (Faculty of Physics and Mathematics) cum laude, 1959
• Dr. phys. (Candidate of Science in former USSR, PhD in Western countries), University of Leningrad, 1984
• Dr. habil. phys., University of Latvia, 1998.

• Junior Researcher, Senior Engineer, Senior Researcher, Laboratory of Nuclear Reactions, Institute of Physics, Latvian Academy of Sciences, 1959-1992
• Scientific Secretary, Senior Researcher, Nuclear Research Centre, Latvian Academy of Sciences, 1992-1998
• Head of Laboratory of Nuclear Reactions, Nuclear Research Centre, Latvian Academy of Sciences, 1996
• Director, Nuclear Research Centre, Latvian Academy of Sciences, 1998-1999
• Vice-Director of ‘Reaktors’ Ltd., 1999-2000
• Vice-Director, Head of Laboratory of Radioactive Testing of Materials, SIA RAPA, 1999 -  
• Head of Laboratory of Radiation Physics, Institute of Solid State Physics, University of Latvia, 1999 -
• Visiting Researcher:

- Leningrad Institute of Nuclear Physics, Gatchina (Russia), 1962 (3 months)
- Zentralinstitut für Kernforschung AdW DDR, Rossendorf (Germany), 1972-1983 (3 months yearly)
- Institute Laue-Langevin, Grenoble (France), 1989
- Technische Universität München, (Germany), 1990, 1996, 1998 (2 months yearly).

• Full Member, Latvian Academy of Sciences, 2004
• Corresponding Member, Latvian Academy of Sciences, 1999
• The Latvian Academy of Sciences and Public Joint Stock Company "Grindex" Prize, 2005

• President (1994-1997,  Member of Board (1997- ),Latvian Physical Society
• Member of Organising Committee of International conferences on Nuclear Structure and Nuclear Spectroscopy 1961, 1968, 1987.
• Member of Editorial Board of journal Atmospheric Physics, Lithuania, 1993 -
• Member of the Deutsche Fachverband für Strahlenschutz, 1993-
• Expert, National Contact Point, EU 5,6 Framework Programmes , 1999 -
• Member, Euratom Consultative Committee Fusion, 1999-

• Dosimetry and radiation protection, University of Latvia ,1962-1983

Recent/Representative Publications

• P.Prokofjevs, J.Berzins et al. Spectra of ElectreomagneticTransitions and Level Schemes Following Thermal Neutron Capture by Nuclides with A143-193, 1973, Riga: Zinatne Press, 112 pp.
• H.Sodan …. J.Berzins et al. Rotational bands in ¹⁸⁵Os and ¹⁸⁷Os. - Nuclear Physics, A237, 1975, pp.333-353.
• M.Leja…J.Berzins et al. Concentrations of radionuclides in Mushrooms and herbs from Latvia after the Tsjernobyl accident. - Proceedings of Intern.symp. "Chemical climatology and geomedical problems", Oslo, 21-22 May 1992, pp.169-183.
• J.Berzins, T.Vasiljeva,I.Ljulko, E.Gabowitch. Organization der Kontrolle von Kontaminationen der Radionuklide in Lettland. Strahlenschutz:Physik und Messtechnik, 26. Jahrestagung, Karlsruhe, 24-26 May 1994, pp.378-384.
• J.Berzins et al. ¹⁶²Dy studied with (n,g ),(n,n’g ),(d,p) and (d,t) reactions. - Nuclear Physics, A584, 1995, pp.413-448.
• R.Georgii, … J.Berzins, et al. Complete level scheme of ¹²⁴Te up to 3 MeV. - Nuclear Physics, A592, 1995, pp.307-337.
• P.Prokofjevs, J.Berzins, et al. Nuclear Structure of ¹⁸³W studied in (n,g ), (n,nÆg ) and (d,p) reactions. - Nuclear Physics, A614, 1997, pp.183-216.
• V.Bondarenko , J.Berzins et al Nuclear levels in ¹⁸⁷W. - Nuclear Physics, A619, 1997, pp.1-48.
• M.Balodis, P.Prokofjevs, N.Kramere, L.Simonova, J.Berzins, T.Krasta et al. Level scheme of ¹⁹⁴Ir. - Nuclear Physics, A641, N2, 1998, pp.133-187.
• P.Prokofjevs, L.I.Simonova, M.Balodis, J.Berzinš, V.Bondarenko, J.Honzatko, I.Tomandl, S.Boneva, V.A.Khitrov, A.M.Sukhovoj. The g g -coincidence measurements of ¹⁶⁶Ho from the (n,g ) reaction. – Fizika B, 2, 2000, 223-237.
• P.Prokofjevs, J.Berzins, et al. Nuclear structure of ¹⁶⁶Ho studied in neutro capture, (d,p) and (d,³He) reactions. – Phys. Rev. C, 2000, vol. 61, 0443505, p. 43.
• V.Bondarenko, J.Berzins et al. Interplay of quasiparticle and phonon excitations in ¹⁸¹Hf observed through (n,? ) and (d,p) reactions. – Nucl. Phys., 2002, A709, pp.3-59
• J.Berzins, V.Bondarenko, T.Krasta, F.Hoyler, et al. Non-Rotation States of ¹⁶⁴Dy. - Proc. 11th Int.Symp.on Capture Gamma-Ray Spectroscopy and Related Topics, Pruhonice, Sept. 20-26, 2002, pp. 637-640.
• D.Riekstina, J.Berzins, O.Veveris, J.Alksnis. Quality assurance/Quality control for testing of radioactivity. - Proc. IRPA Regional Congress on Radiation Protection in Central Europe, Bratislava, Slovakia, September 22-26, 2003, pp. 851-858.
• D.Riekstina, J.Berzins, O.Veveris, J.Alksnis, V.Felsbergs. Radiological impact assessment of the shut-down Salaspils nuclear reactor. – Proceedings of INRNE Conference, Albena, Bulgaria, 2004, 27-30 September.
• V.Bondarenko, J.Honzatko, …, T.von Egidy, J.Berzins, et al. Low-spin mixed particle-hole structure in ¹⁸⁵W. - Nuclear Physics, A762, 2005, pp.167-215.

Research Projects

• J.Berzins (Head of Project) Investigations of Nuclear Structure at Normal and Exotic States. Latvian Council of Science (1997 – 2000).
• J.Berzins (Head of Project) Experimental and Theoretical Investigations of Nuclear Structure at Medium and High Excitation Energies. Latvian Council of Science (2001 - 2004).
• J.Berzins (Head of Project) Experimental and Theoretical Investigations of Nuclear Structure at Normal and Extremal Conditions. Latvian Council of Science (2005 - ).

Last update 27.01.2006