Gamow-Teller transitions to {sup 64}Cu measured with the {sup 64}Zn(t,{sup 3}He) reaction

Journal Article · Wed Jul 15 04:00:00 EDT 2009 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.80.014313· OSTI ID:21289982

Hitt, G W; Zegers, R G. T.; Guess, C J ^[1]; Austin, Sam M; Galaviz, D; Shimbara, Y; Tur, C ^[1]; Bazin, D ^[1]; Gade, A ^[1]; Horoi, M ^[2]; Howard, M E; Smith, E E ^[3]; Rae, W D. M. ^[4]

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1. National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824-1321 (United States)
2. Department of Physics, Central Michigan University, Mount Pleasant, Michigan 48859 (United States)
3. Joint Institute for Nuclear Astrophysics, Michigan State University, East Lansing, Michigan 48824 (United States)
4. Garsington, Oxfordshire, OX44 (United Kingdom)

The {sup 64}Zn(t,{sup 3}He) reaction has been studied by using a secondary triton beam of 115 MeV/nucleon to extract the Gamow-Teller transition-strength distribution to {sup 64}Cu. The results were compared with shell-model calculations with the pf-shell effective interactions KB3G and GXPF1A and with existing data from the {sup 64}Zn(d,{sup 2}He) reaction. Whereas the experimental results exhibited good consistency, neither of the theoretical predictions managed to reproduce the data. The implications for electron-capture rates during late stellar evolution were investigated. The rates based on the theoretical strength distributions are lower by factors of 3.5-5 compared to the rates based on experimental strength distributions.

• OSTI ID: 21289982
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 1 Vol. 80; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
COPPER 64
DISTRIBUTION
ELECTRON CAPTURE
FORECASTING
GAMOW-TELLER RULES
HELIUM 2
HELIUM 3
INTERACTIONS
MEV RANGE 100-1000
NUCLEONS
SHELL MODELS
STAR EVOLUTION
TRITON BEAMS
ZINC 64 TARGET