Q-Value for the Fermi Beta-Decay of 46V

TL;DR

This paper determines the Q-value for the superallowed Fermi decay of 46V using reaction comparisons, providing a precise measurement that aligns with recent mass measurements but differs from earlier reaction data.

Contribution

The study introduces a new, highly precise Q-value measurement for 46V's Fermi decay based on reaction comparison methods, refining previous estimates.

Findings

Q_{EC}(46V) = 7052.11 ± 0.27 keV

Neutron separation energy S_n(47Ti) = 8880.51 ± 0.25 keV

Results agree with recent mass measurements but differ from older reaction Q-values.

Abstract

By comparing the Q-values for the 46Ti(3He,t)46V and 47Ti(3He,t)47}V reactions to the isobaric analog states the Q-value for the superallowed Fermi-decay of 46V has been determined as Q_{EC}(46V)=(7052.11+/-0.27) keV. The result is compatible with the values from two recent direct mass measurements but is at variance with the previously most precise reaction Q-value. As additional input quantity we have determined the neutron separation energy S_n(47Ti)=(8880.51+/-0.25) keV.