6533b821fe1ef96bd127b667
RESEARCH PRODUCT
Excited states in Ra217 populated in the α decay of Th221
M. SicilianoM. SicilianoS. JuutinenJoonas KonkiC. ScholeyJ. F. SmithPanu RuotsalainenD. HodgeR. JulinJuha SorriJuha UusitaloD. MengoniMikael SandzeliusM. SmolenR.-d. HerzbergUlrika JakobssonMarcus ScheckSanna StolzeE. ParrPhilippos PapadakisPauli PeuraK. MulhollandPaul GreenleesJan SarénT. GrahnA. HerzáňA. HerzáňD. M. CullenMatthew J. TaylorC. McpeakeKalle AuranenP. RahkilaG. G. O'neillRobert ChapmanA. K. MistryJari PartanenJanne PakarinenL. Grocuttsubject
Physics010308 nuclear & particles physicsExcited state0103 physical sciencesAtomic physics010306 general physicsSpectroscopy01 natural sciencesSpherical shelldescription
Fine structure in the α decay of Th90221, populating excited states in Ra88217, was studied using αγ-coincidence spectroscopy. Two α-decay branches from Th221 have been newly observed, with Eα(keV)[bα(%)]=7951(8)[0.14(3)] and 8247(3)[1.51(12)], together with three previously known branches. Also, two new states in Ra217 were identified at E = 177 and 227 keV. The ground-state configurations of the odd-A, N = 131 transitional isotones above Pb208 are interpreted from their α-decay fine structure systematics and considered in terms of predictions using spherical shell and reflection-asymmetric models.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2020-11-30 | Physical Review C |