Gamow-Teller transitions to 64-Cu measured using the 64-Zn(t,3-He) reaction

Abstract

The 64-Zn(t,3-He) reaction has been studied using a secondary triton beam of 115 MeV/nucleon to extract the Gamow-Teller transition-strength distribution to 64-Cu. The results were compared with shell-model calculations using the pf-shell effective interactions KB3G and GXPF1A and with existing data from the 64-Zn(d,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.

10 pages, 8 figures

References in corpus (5)

• On the extraction of weak transition strengths via the (3He,t) reaction at 420 MeV
• Shape and structure of N=Z 64Ge; Electromagnetic transition rates from the application of the Recoil Distance Method to knock-out reaction
• Measurement of the Gamow-Teller Strength Distribution in 58Co via the 58Ni(t,3He) reaction at 115 MeV/nucleon
• Electron Capture Strength for {60,62}Ni and {58,60,62,64}Ni(p,n){58,60,62,64}Cu reactions at 134.3 MeV
• Gamow-Teller strengths in 24Na using the 24Mg(t,3He) reaction at 115 AMeV

Cited by in corpus (4)

• Stellar electron-capture rates in pf-shell nuclei from quasiparticle random-phase approximation calculations
• Gamow-Teller Unit Cross Sections for (t,3He) and (3He,t) Reactions
• Impact of New Gamow-Teller Strengths on Explosive Type Ia Supernova Nucleosynthesis
• Spectroscopy of 13B via the 13C(t,3He) reaction at 115 AMeV