München 2006 – wissenschaftliches Programm
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HK: Physik der Hadronen und Kerne
HK 25: Theorie
HK 25.6: Vortrag
Dienstag, 21. März 2006, 18:15–18:30, B
Gamow-Teller and M1 strengths in sd-pf and pf-g cross-shell regions — •Alexander Lisetskiy1,2, Karlheinz Langanke1, Gabriel Martinez-Pinedo1, and Alex Brown2 — 1GSI, Planckstr. 1, Darmstadt, 64291, Germany — 2NSCL, Michigan State University, 1 Cyclotron Laboratory, East Lansing, 48824, MI, USA
Neutron-rich nickel isotopes in the vicinity of 2878Ni50 and and argon isotopes with A=38-44 are currently in the focus of modern nuclear physics and astrophysics studies. The interest in these regions is motivated by the doubly magic nature of 2878Ni, 2040Ca and 2048Ca nuclei, understanding the way in which the neutron excess will affect the properties of nearby nuclei and nucleon-nucleon interaction and cross-shell N and N+1 effects. The astrophysical importance is related to the understanding of the nuclear mechanism of the rapid capture of neutrons by seed nuclei through the r-process and electron capture on nuclei for nickel an argon isotopes, respectively. In present contribution we discuss effects of f7/2 orbital on beta-decay properties of nickel isotopes by breaking the 56Ni core and mixing effects of sd and pf shell configurations on M1 strength distribution for argon isotopes.