TY - JOUR
T1 - [Formula Presented]-decays of neutron-deficient americium isotopes
AU - Sakama, M.
AU - Asai, M.
AU - Tsukada, K.
AU - Ichikawa, S.
AU - Nishinaka, I.
AU - Nagame, Y.
AU - Haba, H.
AU - Goto, S.
AU - Shibata, M.
AU - Kawade, K.
AU - Kojima, Y.
AU - Oura, Y.
AU - Ebihara, M.
AU - Nakahara, H.
PY - 2004
Y1 - 2004
N2 - 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.
AB - 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.
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U2 - 10.1103/PhysRevC.69.014308
DO - 10.1103/PhysRevC.69.014308
M3 - Article
AN - SCOPUS:85035296745
SN - 0556-2813
VL - 69
SP - 11
JO - Physical Review C - Nuclear Physics
JF - Physical Review C - Nuclear Physics
IS - 1
ER -