Proton decay of the highly deformed odd-odd nucleus Eu

C.N. Davids, P.J. Woods, H. Mahmud, T. Davinson, A. Heinz, J.J. Ressler, K. Schmidt, D. Seweryniak, J. Shergur, A.A. Sonzogni, W.B. Walters

Research output: Contribution to journalArticlepeer-review

Abstract

The proton decay of the highly deformed odd-odd nucleus Eu has been observed by bombarding a Ni target with a beam of 425 MeV Kr ions. Fusion evaporation residues were separated in-flight using the Argonne fragment mass analyzer and implanted into a double-sided silicon strip detector. Eu decays by the emission of a proton with energy E= 1020(15) keV [Q = 1028(15) keV] and half-life t =0.90ms. The transition is assigned to a highly deformed (β ∼ 0.3) J =1 ground-state configuration by comparing the decay rate with a new theoretical formalism for deformed odd-odd nuclei. These results clearly demonstrate the sensitivity of the proton decay rate to the spectator neutron configuration.
Original languageEnglish
Pages (from-to)113021-113023
Number of pages3
JournalPhysical Review C
Volume69
Issue number1
Publication statusPublished - 1 Jan 2004

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