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Calculation of the β+decay of proton-rich sd-shell nuclei into a Gamow-Teller resonance

Authors
Journal
Nuclear Physics A
0375-9474
Publisher
Elsevier
Publication Date
Volume
430
Issue
1
Identifiers
DOI: 10.1016/0375-9474(84)90192-1

Abstract

Abstract The β + strength functions for the β + decay of the proton-rich nuclei 32Ar, 33Ar and 36Ca are studied using shell-model wave functions. A resonance-like structure in the strength function is calculated to be positioned about 3 MeV above the state that is the isobaric analogue state of the ground state of the decaying nucleus. A comparison with available data for A = 33 reveals a hindrance of strength in this resonance region of a factor of 2–3, in accordance with information from other spin-flip probes. The calculations for A = 32 and 36 indicate that these systems possess a J π ; T = 1 +; 1) Gamow-Teller resonance based on the J π ; T = 0 +; 2 state of the system.

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