Gamow-Teller transitions from {sup 56}Ni

Journal Article · Mon Nov 12 04:00:00 EST 2012 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4763384· OSTI ID:22075738

Sasano, M ^[1]; Perdikakis, G ^[2]; Zegers, R G.T. ^[3]; others, and

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1. RIKEN Nishina Center, Wako, 351-0198 (Japan)
2. 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)
3. 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, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1484; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BETA DECAY
CHARGE-EXCHANGE REACTIONS
COMPUTERIZED SIMULATION
COPPER 56
ELECTRON CAPTURE
G CODES
GAMOW-TELLER RULES
L-S COUPLING
MEV RANGE
NEUTRONS
NICKEL 56
POTENTIALS
PROTON REACTIONS
PROTON-NUCLEON INTERACTIONS
PROTONS
SHELL MODELS
SPIN
SUPERNOVAE