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Monopole-driven shell evolution below the doubly magic nucleus Sn 132 explored with the long-lived isomer in Pd 126

Watanabe, Hiroshi; Lorusso, G; Otsuka, T; Ogawa, K.; Xu, Z.Y.; Sumikama, T; Soderstrom, P.-A.; Doornenbal, P.; Li, Z.; Browne, F; Gey, G; Lane, Gregory

Description

A new isomer with a half-life of 23.0(8) ms has been identified at 2406 keV in Pd126 and is proposed to have a spin and parity of 10+ with a maximally aligned configuration comprising two neutron holes in the 1h11/2 orbit. In addition to an internal-decay branch through a hindered electric octupole transition, β decay from the long-lived isomer was observed to populate excited states at high spins in Ag126. The smaller energy difference between the 10+ and 7- isomers in Pd126 than in the...[Show more]

CollectionsANU Research Publications
Date published: 2014
Type: Journal article
URI: http://hdl.handle.net/1885/74289
Source: Physical Review Letters
DOI: 10.1103/PhysRevLett.113.042502

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