Spectroscopy at the two-proton drip line: excited states in 158W

Joss, DT ORCID: 0000-0001-5763-8767, Page, RD, Herzan, A and Donosa, L (2017) Spectroscopy at the two-proton drip line: excited states in 158W. Physics Letters B, 772. pp. 703-707.

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Abstract

Excited states have been identified in the heaviest known even-Z isotone 158W, which lies in a region of one-proton emitters and the two-proton drip line. The observation of γ-ray transitions feeding the ground state establishes the excitation energy of the yrast 6+ state confirming the spin-gap nature of the α-decaying 8+ isomer. The 8+ isomer is also expected to be unbound to two-proton emission but no evidence for this decay mode was observed. An upper limit for the two-proton decay branch has been deduced as 0.17% at the 90% confidence level. The possibility of observing two-proton emission from multiparticle isomers in nearby nuclides is considered.

Item Type:	Article
Uncontrolled Keywords:	multiparticle excited states, proton radioactivity
Depositing User:	Symplectic Admin
Date Deposited:	25 Jul 2017 08:55
Last Modified:	19 Jan 2023 06:58
DOI:	10.1016/j.physletb.2017.07.031
Open Access URL:	https://doi.org/10.1016/j.physletb.2017.07.031
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3008590