# High-precision branching-ratio measurement for the superallowed Fermi $\beta^+$ emitter 18Ne

Abstract : Through obseravation of the spectra of $\beta$-delayed $\gamma$-rays, the branching ratio of the superllowed Fermi transition has be determined to be (7.70(21)%) ± 2.7% precision. In this work we will determine this branching ratio for at the level of 0.2%, and significantly improve the precision on the half-life to 0.03% to establish the 18Ne ft value at a comparable level of precision to the 13 wellknown cases. This result will assess the relative accuracy of the ISB shell-structure enhancement near the N = 8 shell closure and provide important information on the validity and accuracy of recent ISB calculations.
Document type :
Poster communications
Complete list of metadata

http://hal.in2p3.fr/in2p3-00837876
Contributor : Michel Lion <>
Submitted on : Monday, June 24, 2013 - 2:28:35 PM
Last modification on : Thursday, February 1, 2018 - 1:34:23 AM

### Identifiers

• HAL Id : in2p3-00837876, version 1

### Citation

H. Bouzomita. High-precision branching-ratio measurement for the superallowed Fermi $\beta^+$ emitter 18Ne. SIMEM's 2013 JED, Jun 2013, Caen, France. ⟨in2p3-00837876⟩

Record views