High K bands in mid-supershell nuclei
P. A. ButlerR. D. HumphreysP. T. GreenleesR.-D. HerzbergD. G. JenkinsG. D. JonesH. KankaanpääH. KettunenP. RahkilaC. ScholeyJ. UusitaloN. AmzalC. AndreoiuA. N. AndreyevD. E. AppelbeJ. E. BastinP. M. T. BrewK. EskolaS. J. FreemanNuclear PhysicsJ. GerlN. J. HammondK. HauschildK. HelariuttaF. P. HeßbergerA. HürstelP. J. C. IkinPeter G. JonesD. T. JossR. JulinS. JuutinenA. KeenanT. L. KhooW. KortenP. KuusiniemiCoz Y LeM. LeinoA.-P. LeppänenM. MuikkuP. NieminenS. W. ØdegårdR. D. PageT. PageJ. PakarinenP. ReiterJ. SimpsonG. SlettenCh. TheisenB. J. VarleyH. J. Wollersheim
ABI
Abstract
The spectrum of prompt conversion electrons emitted by excited 254No nuclei has been measured, revealing discrete lines arising from transitions within the ground state band. A striking feature is a broad distribution that peaks near 100 keV and comprises high multiplicity electron cascades, probably originating from M1 transitions within rotational bands built on high K states. Evidence for the existence of isomeric states in 254No is presented.
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