6533b830fe1ef96bd129695d

RESEARCH PRODUCT

Fine structure in the α decay of high-spin isomers in 155Lu and 156Hf

E. ParrR. D. PageD. T. JossF. A. AliKalle AuranenL. CapponiTuomas GrahnPaul GreenleesJ. HendersonAndrej HerzanUlrika JakobssonRauno JulinSakari JuutinenJoonas KonkiM. LabicheMatti LeinoP. J. R. MasonC. McpeakeD. O’donnellJanne PakarinenPhilippos PapadakisJari PartanenPauli PeuraPanu RahkilaJ. P. RevillPanu RuotsalainenMikael SandzeliusJan SarénCatherine ScholeyJ. SimpsonJ. F. SmithM. SmolenJuha SorriSanna StolzeA. ThornthwaiteJuha Uusitalo

subject

lifetimes and widthsalpha decayenergy levels and level densitiesnuclear spin and parityshell modelisomer decaysydinfysiikka

description

Fine structure in the α decay of high-spin isomers in 155Lu(25/2−) and 156Hf (8+) has been studied for the first time using αγ -coincidence analysis. Three new α decays from 155Lu(25/2−) and two from 156Hf (8+) have been identified, populating seniority s > 1 states in the N = 82 nuclei 151Tm and 152Yb, respectively. The reduced hindrance factors of the α decays support the previous configuration assignments of the populated states. This is the first observation of states with excitation energy greater than 1.5 MeV being populated following α decay in nuclei outside of the 208Pb region. peerReviewed

yearjournalcountryeditionlanguage
2018-01-01
http://urn.fi/URN:NBN:fi:jyu-201808303982