Gamow-Teller transitions from {sup 56}Ni
- RIKEN Nishina Center, Wako, 351-0198 (Japan)
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, MI 48824-1321 (United States) and Joint Institute for Nuclear Astrophysics, Michigan State University, East Lansing, MI 48824 (United States)
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, MI 48824-1321 (United States) and Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824 (United States)
A new technique to measure (p,n) charge-exchange reactions in inverse kinematics at intermediate energies on unstable isotopes was successfully developed and used to study the {sup 56}Ni(p,n) reaction at 110 MeV/u. Gamow-Teller transition strengths from {sup 56}Ni to {sup 56}Cu were obtained and compared with shell-model predictions in the pf-shell using the KB3G and GXPF1A interactions. The calculations with the GXPF1A interaction reproduce the experimental GT strength distribution much better than the calculations that employed the KB3G interaction, indicating deficiencies in the spin-orbit and proton-neutron residual potentials for the latter. The results are important for improving the description of electron-capture rates on nuclei in the iron region, which are important for modeling the late evolution of core-collapse and thermonuclear supernovae.
- OSTI ID:
- 22075738
- Journal Information:
- AIP Conference Proceedings, Vol. 1484, Issue 1; Conference: Conference on origin of matter and evolution of galaxies 2011, Wako (Japan), 14-17 Nov 2011; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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