6533b7dbfe1ef96bd126fe8e

RESEARCH PRODUCT

First observation of excited states in 184Pb: spectroscopy beyond the neutron mid-shell

S. ChmelJ. F. C. CocksMatti LeinoS. JuutinenM. MuikkuY. Le CozA. SaveliusHeikki KettunenK. HelariuttaPasi KuusiniemiE. MergelH. KankaanpääJ. DomscheitR. D. PageR. JulinR. LucasM. HouryI. M. HibbertPaul GreenleesPeter M. JonesR. WadsworthW. KortenD. G. JenkinsWladyslaw Henryk Trzaska

subject

PhysicsNuclear and High Energy PhysicsIsotopeExcited stateNeutron numberHadronNuclear fusionNeutronMoment of inertiaAtomic physicsSpectroscopy

description

Excited states have been identified for the first time in 184Pb, the first even-even Pb isotope beyond the 82 < N < 126 mid-shell, using the recoil-decay tagging (RDT) technique. A collective band built on the first-excited 2+ state has been observed. This resembles those seen in 186,188Pb and the Hg isotones, and can thus be associated with a prolate-deformed shape. Variable moment of inertia (VMI) fits of the prolate 0+ level energies in 184,186,188Pb indicate that the minimum appears at N= 103, the same neutron number at which the corresponding minimum in Hg isotopes is observed.

yearjournalcountryeditionlanguage
1998-09-01The European Physical Journal A
https://doi.org/10.1007/s100500050144