Beta decay and M1 decay rates for A = 20 nuclei

Abstract

The Tabakin potential and a Serber-Yukawa potential are used to calculate the shell-model wave functions of A = 20 nuclear states with quantum numbers J^π = 0⁺, T = 0, J^π = 0⁺, T = 1, J^π = 0⁺, T = 2 and J^π = 1⁺ and T = 1. The former is found to give good fits for the energies. The log ft values for β-decays from ²⁰O to low-lying levels of ²⁰F and M1 decay rates in ²⁰Ne are calculated in reasonable agreement with observed values.