Gamow-Teller transitions toCu<mml:mprescripts/><mml:none/>64measured with theZn<mml:mprescripts/><mml:none/>64(t,He<mml:mprescripts/><mml:none/>3) reaction

2009/04/23 by G. W. Hitt, R. G. T. Zegers, Sam M. Austin +12
Physics and Astronomy · #Advanced Chemical Physics Studies #Atomic and Molecular Physics #Nuclear physics research studies #nucl-ex

paper · pdf · doi:10.1103/physrevc.80.014313

published as Phys.Rev.C80:014313,2009 · 10 pages, 8 figures

arxiv created 2009/04/23 · openalex publication_date 2009/07/16 · arxiv updated 2009/12/01 · openalex created_date 2017/03/16 · openalex updated_date 2026/07/28

Abstract

The ⁶⁴Zn(t,³He) reaction has been studied by using a secondary triton beam of 115 MeV/nucleon to extract the Gamow-Teller transition-strength distribution to ⁶⁴Cu. The results were compared with shell-model calculations with the pf-shell effective interactions KB3G and GXPF1A and with existing data from the ⁶⁴Zn(d,²He) 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.

Citations

• Nuclear weak-interaction processes in stars
• Shell model study of the isobaric chains A=50, A=51 and A=52