Sigurd Hofmann

Sigurd Hofmann on the occasion of his lecture on 150 years of high school in Groß-Umstadt

Sigurd Hofmann (born February 15, 1944 in Böhmisch-Kamnitz ) is a German physicist and university professor .

biography

Hofmann discovered his love for physics at what is now the Max-Planck-Gymnasium in Groß-Umstadt , where he passed his school- leaving examination in 1963. He studied physics at the Technical University of Darmstadt , now TU Darmstadt ( diploma in 1969 and promotion to Doctor of Science at the Institute of Nuclear Physics at Egbert Kankeleit and Karl Vienna, 1974). From 1974 to 1989 he was a physicist in Peter Armbruster's Nuclear Chemistry II department, responsible for the detection of atomic nuclei generated by nuclear fusion on the SHIP velocity separator . He works at the GSI Helmholtz Center for Heavy Ion Research in Darmstadt . He was the chief scientist in the discovery of the chemical elements Darmstadtium (Ds, atomic number 110) Roentgenium (Rg, 111) and Copernicium (Cn, 112). He played a major role in the synthesis of the elements Bohrium (Bh, 107), Hassium (Hs, 108) and Meitnerium (Mt, 109). He was involved in the discovery of the element Flerovium (Fl, 114) at the Flerov Laboratory of Nuclear Reactions ( FLNR ) in Dubna , Russia, and his research group confirmed the accuracy of the data measured at the FLNR for the synthesis of the elements Flerovium and Livermorium (Lv, 116 ). He identified several new isotopes along the proton drip line , including the first case of radioactive emission of protons from the ground state through detection of the neutron- poor isotope ¹⁵¹ Lu. His specialties are nuclear spectroscopy and heavy ion reactions .

Since 1989 he has headed the experiments for the creation of new elements at the SHIP at GSI after Gottfried Münzenberg . Since 1998 he has been honorary professor at the Goethe University in Frankfurt am Main .

1984 Physics Prize of the German Physical Society (together with Gottfried Münzenberg , Willibrord Reisdorf and Karl-Heinz Schmidt )
1996 Otto Hahn Prize of the City of Frankfurt am Main (together with Gottfried Münzenberg )
1996 Dr. hc from the Faculty of Mathematics and Physics at Comenius University in Bratislava , Slovakia
1997 GN Flerov Prize from the Joint Institute for Nuclear Research (JINR) in Dubna , Russia
1998 Honorary Professor at the Goethe University in Frankfurt am Main
1998 SUN-AMCO Medal from the International Union of Pure and Applied Physics
2001 Dr. hc of the Joint Institute for Nuclear Research (JINR) in Dubna , Russia
2002 First Prize from the Joint Institute for Nuclear Research (JINR) in Dubna , Russia
2004 Professor Laureatus of the Josef Buchmann Foundation in the physics department of the Goethe University in Frankfurt am Main
2006 X-ray badge from the city of Remscheid-Lennep
2009 Helmholtz Professor of the Helmholtz Association of German Research Centers (HGF)
2011 Nicolaus Copernicus Medal of the Polish Academy of Sciences in Warsaw , Poland
2011 Medal of the City of Toruń and the Nicolaus Copernicus University of Toruń , Poland

Sigurd Hofmann: On the hunt for super heavyweights . In: Physik Journal , Volume 4, 2005, pp. 37-43, online
Sigurd Hofmann: Super Heavy Elements . In: Physics in our time, Volume 1, 2012, pp. 30–39, doi : 10.1002 / piuz.201290002
Sigurd Hofmann: On Beyond Uranium - Journey to the end of the Periodic Table . In: Science Spectra Book Series, Volume 2, V. Moses, Series Editor, ISBN 0-415-28495-3 (hardback), ISBN 0-415-28496-1 (paperback), Taylor and Francis, London and New York, 2002, 216 pages, limited preview in Google Book Search
Sigurd Hofmann: Synthesis of superheavy elements by cold fusion . Radiochimica Acta Volume 99, 2011, pp. 405-428, doi : 10.1524 / ract.2011.1854
Sigurd Hofmann and Gottfried Münzenberg: The discovery of the heaviest elements . In: Reviews of Modern Physics, Volume 72, 200, pp. 733-767, online
Sigurd Hofmann: Proton radioactivity . In: Nuclear decay modes, DN Poenaru, Editor, ISBN 0-7503-0338-7 , IOP Publishing Ltd, 1996, pp. 143-203

Sigurd Hofmann: Physics experiments on superheavy elements at the GSI-SHIP . In: The 4th International Conference on the Chemistry and Physics of the Transactinide Elements. In: Sochi, Russia, 6. – 10. September, 2011, online (PDF; 6.0 MB)
Chemical element 112 is called copernicium . In: Labor & more , Volume 3, 2010, online
Bavarium would be a nice name. In: Süddeutsche Zeitung of June 12, 2009, online
Martyn Poliakoff from the University of Nottingham, UK, at GSI: online

^ S. Hofmann et al .: Production and decay of ²⁶⁹ 110. In: Zeitschrift für Physik A: Hadrons and Nuclei. Volume 350, 1995, pp. 277-280
^ S. Hofmann et al .: The new element 111. In: Zeitschrift für Physik A: Hadrons and Nuclei. Volume 350, 1995, pp. 281-282
^ S. Hofmann et al .: The new element 112. In: Zeitschrift für Physik A: Hadrons and Nuclei. Volume 354, 1996, pp. 229-230
^ G. Munzenberg et al .: Identification of element 107 by α correlation chains. In: Journal of Physics A: Atoms and Nuclei. Volume 300, 1981, pp. 107-108
^ G. Munzenberg et al .: The identification of element 108. In: Zeitschrift für Physik A: Atoms and Nuclei. Volume 317, 1984, pp. 235-236
^ G. Munzenberg et al .: Observation of one correlated α-decay in the reaction ⁵⁸ Fe on ²⁰⁹ Bi → ²⁶⁷ 109. In: Zeitschrift für Physik A: Atoms and Nuclei. Volume 309, 1982, pp. 89-90
↑ Yu.Ts. Oganessian et al .: Synthesis of nuclei of the superheavy element 114 in reactions induced by ⁴⁸ Ca. In: Nature Volume 400, 1999, pp. 242-245
^ S. Hofmann et al .: The reaction ⁴⁸ Ca + ²⁴⁸ Cm → ²⁹⁶ 116 * studied at the GSI-SHIP In: The European Physical Journal A: Hadrons and Nuclei Volume 48, 2012, Article 62, pp. 1–23
^ S. Hofmann et al .: Proton radioactivity of ¹⁵¹ Lu. In: Journal of Physics A: Atoms and Nuclei. Volume 305, 1982, pp. 111-123