Precise half-life measurement of the superallowed emitter 30S

TL;DR

This paper reports a high-precision measurement of the half-life of 30S, a superallowed beta emitter, using pure sources and a gas counter, providing important data for nuclear physics and testing fundamental symmetries.

Contribution

The study provides the most precise half-life measurement of 30S and also determines the half-life of its daughter 30P, enhancing nuclear decay data accuracy.

Findings

Half-life of 30S measured as 1.17992(34) seconds.

Half-life of 30P determined as 2.501(2) minutes.

Results improve precision of nuclear decay data for superallowed emitters.

Abstract

We have measured the half-life of 30S, the parent of a superallowed 0+-to-0+ beta transition, to high precision using very pure sources and a 4pi proportional gas counter to detect the decay positrons. Our result for the half-life is 1.17992(34) s. As a byproduct of this measurement, we determined the half-life of its daughter, 30P, to be 2.501(2) min.