Precise Half-Life Measurement of the Superallowed Beta+ Emitter 46V
H. I. Park, J. C. Hardy, V. E. Iacob, L. Chen, J. Goodwin, N. Nica, E., Simmons, L. Trache, R. E. Tribble
TL;DR
This paper reports a highly precise measurement of the half-life of 46V, improving accuracy and confirming consistency with previous data, thereby refining the superallowed transition Ft value.
Contribution
The study provides the most precise half-life measurement of 46V to date, resolving previous discrepancies and refining the Ft value for superallowed beta decay.
Findings
Half-life of 46V measured as 422.66(6) ms
Ft value for 46V transition is 3074.1(26) s
Results are consistent with previous measurements
Abstract
The half-life of 46V has been measured to be 422.66(6) ms, which is a factor of two more precise than the best previous measurement. Our result is also consistent with the previous measurements, with no repeat of the disagreement recently encountered with Q_{EC} values measured for the same transition. The Ft value for the 46V superallowed transition, incorporating all world data, is determined to be 3074.1(26) s, a result consistent with the average Ft value of 3072.08(79) s established from the 13 best-known superallowed transitions.
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