6533b7d0fe1ef96bd125a6c1

RESEARCH PRODUCT

Isomeric 13/2+ state in 201Fr

K. AuranenU. JakobssonH. BadranT. GrahnP. T. GreenleesA. HerzánR. JulinS. JuutinenJ. KonkiM. LeinoA.-p. LeppänenG. O'neillJ. PakarinenP. PapadakisJ. PartanenP. RahkilaP. RuotsalainenM. SandzeliusJ. SarénC. ScholeyL. SinclairJ. SorriS. StolzeJ. UusitaloA. Voss

subject

lifetimes and widthsalpha decayenergy levels and level densitiesnuclear spin and parityisomer decaysydinfysiikkanuclear structure and decays

description

We have identified an isomeric state in 201Fr for which we propose a spin and parity of 13/2 +, and interpret it as arising from the π(i13/2 ) configuration. A half-life of 720(40) ns was measured, corresponding to B(M2) = 0.17(2) W.u., in good agreement with those of other 13/2 + → 9/2 − [π(i13/2 ) → π(h9/2 )] transitions observed in other nuclei in the region. The nuclei of interest were produced in a fusion-evaporation reaction and their decay properties were investigated using the GREAT spectrometer at the focal plane of the RITU gas-filled recoil separator. peerReviewed

yearjournalcountryeditionlanguage
2020-01-01
http://urn.fi/URN:NBN:fi:jyu-202002202138