6533b858fe1ef96bd12b5a56
RESEARCH PRODUCT
Spectroscopy at the two-proton drip line: Excited states in 158W
Bo CederwallMikael SandzeliusAndrej HerzanRauno JulinBaharak HadiniaBaharak HadiniaIain DarbyIain DarbyD. SeweryniakRaymond J. CarrollSakari JuutinenD. T. JossTuomas GrahnMatti LeinoL. DonosaMay NymanDavid O'donnellPeter B. JonesRobert PageJuha UusitaloCatherine ScholeyJ. SimpsonUlrika JakobssonUlrika JakobssonJuha SorriJanne PakarinenPanu RahkilaSarah EeckhaudtJan SarénK. AndgrenPaul GreenleesA.-p. Leppänensubject
PhysicsNuclear and High Energy Physicsproton radioactivityProtonta114010308 nuclear & particles physicsYrastNuclear Theory01 natural scienceslcsh:QC1-999Excited state0103 physical sciencesNuclideAtomic physics010306 general physicsSpectroscopyGround stateNuclear Experimentmultiparticle excited stateslcsh:PhysicsExcitationLine (formation)description
Abstract Excited states have been identified in the heaviest known even-Z N = 84 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 b 2 p ≤ 0.17% at the 90% confidence level. The possibility of observing two-proton emission from multiparticle isomers in nearby nuclides is considered.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-09-01 | Physics Letters B |