Abstract

The gamma radiations from the decay of 35Ar have been studied using Ge(Li) γ-ray detectors. Evidence is found for previously unreported β feeds to the 35Cl levels at 2695 and 3003 keV. The percentage β feeds to 35Cl levels are the following: 0 keV, 98.3 ± 0.2; 1220 keV, 1.22 ± 0.20; 1763 keV, 0.22 ± 0.05; 2695 keV, 0.16 ± 0.04; and 3003 keV, 0.11 ± 0.03. The 35Ar half-life is found to be 1.787 ± 0.012 s. The present results support the findings of Wick et al. that the vector coupling constant determined from the 35Ar ground state beta decay is significantly larger than the values inferred from other super-allowed decays.

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