Wolfram von Oertzen

Wolfram von Oertzen (born July 24, 1939 in Mannheim ) is a German experimental physicist who specializes in nuclear physics and heavy ion physics.

Life

He is the son of the engineer Hans Jürgen von Oertzen (1907-1983) and Magdalena (Leni) Specht (* 1911). Oertzen went to school in Obninsk (1946–1955) in the Soviet Union and from 1952 to 1955 in Sukhumi , where his father was forced to work as an engineer after the end of World War II. The family lived there in fenced camps. From 1958 to 1963 he studied physics at the University of Heidelberg , where he received his doctorate on heavy ion reactions under Rudolf Bock in 1967 and completed his habilitation in 1971 . From 1964 he was a scientific assistant at the Max Planck Institute for Nuclear Physics in Heidelberg. In 1968/69 Oertzen was a research assistant at the IPN in Orsay ( University of Paris-South ) and in 1972/73 at the Lawrence Berkeley National Laboratory and in 1973 at the Brookhaven National Laboratory . From 1974 he was professor of physics at the Free University of Berlin (FU) and was a senior scientist at the former Hahn-Meitner-Institut in Berlin, whose physics department he headed from 1979 to 1994. At the Hahn-Meitner-Institut he was responsible for the research program in experimental nuclear physics and accompanied the construction of the heavy ion accelerator VICKSI (then part of the ion beam laboratory ISL at the HMI), now as an eye hadron therapy facility under the direction of the Charité for eye tumors at the Helmholtz Center Berlin, Lise Meitner campus.

Among other things, he was visiting professor / visiting scholar in 1977 in Orsay (University of Paris-South), at the Nuclear Research Institute (ISN) at the University of Grenoble (1983/84), at the GANIL heavy ion accelerator in Caen , at the Institute for Nuclear Study (INS) at the University of Tokyo (1985 , 1988), CRN (now Department de Recherches Subatomiques ) in Strasbourg (1990, 1994), at the University of Tübingen (1991), in Padua (Laboratori Nationale du Legnaro, Italy), 2000/2001 at the University of Surrey, Guildford ( UK) and repeated (1972, 1975, 1978) Consultant at Los Alamos National Laboratory (New Mexico, USA).

He married Marianne Kirchner (born May 25, 1940 in Leipzig, died on July 21, 2019 in Berlin) in Heidelberg on August 23, 1966, the daughter of pastor Gerhard Kirchner and Hildegard Leuckfeld, with a son (Alexander) and a daughter (Sascha). He has been married to Edda Eisenlohr for the second time since 1994.

Awards

• In 1994 he received the Alexander von Humboldt Prize for France ,
• In 1995 he received the Russian Flerov Prize
• In 1996 he became honorary professor Prof. hc at the University of Saint Petersburg .
• 2007 Gentner-Kastler Prize of the German (DPG) and French (SFP) Physical Society .
• In 2008 he was elected a Fellow of the European Physical Society (EPS).
• In 2012, together with the FOBOS group, he received the first prize of the Russian United Institute for Nuclear Research, JINR in Dubna for the discovery of a new radioactive decay: the triple collinear fission of Californium 252.

He had been a member of the Nuclear Science Division of the European Physical Society (EPS) since 1994 and its chairman from 1999-2003. 1986 to 1989 he was chairman of the "Hadrons and Nuclei" committee of the German Physical Society (DPG ) In 1991 he was a member of the National (France) Committee (01) of the CNRS .

Act

Oertzens investigations of neutron transfer reactions z. B. with carbon nuclei at the MPI in Heidelberg provided first indications of molecular orbitals in nuclei in scattering and reactions in nucleus - nucleus collisions .. He dealt with nucleon transfer reactions with heavy ions (between heavy nuclei). especially the transfer of neutron pairs between heavy nuclei at the GSI in Darmstadt , where he investigated the superfluid properties of nuclei and explained the increase in the cross-section of the fusion of heavy nuclei through reinforcement effects when exchanging proton pairs. Later he dealt with the investigation of nuclear matter - properties with the nuclear-nuclear rainbow scattering , which provides information on the equation of state of cold nuclear matter and the properties of the nuclear forces at higher densities. Further work concerns the investigation of nucleus molecules (spectroscopy of neutron-rich light nuclei). In the isotopes of light nuclei, especially in Be isotopes, he observed the formation of clusters and the formation of molecules in these nuclei (consisting of alpha particles and neutrons ) and the covalent bonding effects through valence neutrons similar to valence orbitals of electrons in atomic molecules. Further work concerns nuclear states with multi-alpha particles in excited states of nuclei which, according to von Oertzen , can form Bose quantum fluids in the border area to alpha decay . Since 2009 he has been working with the FOBOS group at the Flerov Laboratory for Nuclear Reactions (FLNR) of the JINR in Dubna, among other things in the investigation of the so far unobserved true ternary fission , in which heavy nuclei are collinear in about three equal parts Columns (CCT, collinear cluster tri partition).

literature

• Genealogical manual of the nobility , noble houses A volume XXII, page 195, volume 103 of the complete series, CA Starke Verlag, Limburg (Lahn) 1992, ISBN 3-7980-0700-4

Fonts (selection)

• Wolfram von Oertzen, H. Bertschat: Matter under heavy ion bombardment , image of science , 12/1980
• Bunryu Imanishi, Wolfram von Oertzen: Molecular Orbitals in Nucleus Nucleus Collisions , Physics Reports C, Volume 155, 1987, pp. 29-136
• Wolfram von Oertzen: superconductivity between nuclei, increased transfer of nucleon pairs . Physikalische Blätter, Volume 46, 1990, pp. 313-316, online
• Wolfram von Oertzen: Transfer of Nucleons between Nuclei . In: Nuclear Collisions from the Mean-Field into the Fragmentation Regime, Soc. Italiana di Fisica, 1991 CXII Corso, Erice school, 1991, pp. 459-521. Ed. Compositori, Bologna
• Wolfram von Oertzen: Nuclear structure beyond the shell model: clusters and nuclear molecules (Gentner-Kastler Prize), Physik Journal, Volume 6, 2007, No. 8/9, p. 79
• Wolfram von Oertzen: The (real) triple fission of heavy nuclei , Physics in our time, issue 1, 2011, p. 7
• Wolfram von Oertzen: Exotic core forms. Nuclear clusters and covalent bonds on the femto scale , Physics in Our Time, Issue 5, 2011, p. 235
• Wolfram von Oertzen, Martin Freer, Yoshiko Canada-Enyo: Nuclear Clusters and Molecules , Physics Reports, Volume 432, 2006, pp. 43-113.
• Wolfram von Oertzen, Andrea Vitturi: Pairing correlations of nucleons and multi-nucleon transfer between heavy nuclei , Reports on Progress in Physics, Volume 64, 2001, pp. 1247-1337
• Dao Tien Khoa, W. von Oertzen, HG Bohlen, S. Ohkubo: Nuclear rainbow scattering and nucleus-nucleus potential , Topical Review, J. Phys. G, Volume 34, 2007, pp. R111-R164
• W. von Oertzen: Enhanced Two Nucleon Transfer Due to Pairing Correlations , Chapter 30 in: R. a. Broglia, V. Zelevinsky (Ed.): Fifty Years of Nuclear BCS, Pairing in Finite Systems , World Scientific 2013, pp. 405-419
• W. von Oertzen: Alpha-cluster condensations in nuclei and experimental approaches for their studies , Chapter 3 in: Lecture Notes in Physics Vol. 818, Springer, 2010, pp. 109–128
• W. von Oertzen, Matko Milin, Covalent Binding on the Femtometer Scale: Nuclear Molecules , Chapter 5 in: Lecture Notes in Physics Vol. 875, Springer 2013, pp. 147-182

Web links

• Literature by and about Wolfram von Oertzen in the catalog of the German National Library
• Artworks on www.wolframvoe.de
• Homepage at the Hahn-Meitner-Institut ( Memento from September 4, 2004 in the Internet Archive )
• For the award of the Gentner-Kastler-Preis 2007, with photo