[Formula Presented]-decays of neutron-deficient americium isotopes

M. Sakama, M. Asai, K. Tsukada, S. Ichikawa, I. Nishinaka, Y. Nagame, H. Haba, S. Goto, M. Shibata, K. Kawade, Y. Kojima, Y. Oura, M. Ebihara, H. Nakahara

Research output: Contribution to journalArticlepeer-review

Abstract

Neutron-deficient americium isotopes [Formula Presented] were produced in the bombardment of multiple thin targets of [Formula Presented] and [Formula Presented] with [Formula Presented] ions. The reaction products were effectively mass-separated using the on-line isotope separator (JAERI-ISOL) coupled to a helium gas-jet transport system. For the first time, the [Formula Presented] transition of [Formula Presented] was observed, and some improved [Formula Presented]-decay data for [Formula Presented] and [Formula Presented] ([Formula Presented]-decay daughter of [Formula Presented]) were accumulated. The [Formula Presented]-particle energies of [Formula Presented] and [Formula Presented] were determined to be [Formula Presented] and [Formula Presented] and their half-lives were [Formula Presented] and [Formula Presented], respectively. Measured [Formula Presented]-decay branching ratios of [Formula Presented] and [Formula Presented] were [Formula Presented] and [Formula Presented], respectively, while the lower limit for [Formula Presented]-decay of [Formula Presented] was deduced to be [Formula Presented]. Hindrance factors and probable assignments of the levels involved in those [Formula Presented] transitions are discussed.

Original languageEnglish
Number of pages1
JournalPhysical Review C - Nuclear Physics
Volume69
Issue number1
DOIs
Publication statusPublished - 2004 Jan 1
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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