期刊
PHYSICAL REVIEW C
卷 90, 期 1, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.90.014322
关键词
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资金
- Office of Nuclear Physics
- U.S. Department of Energy
- Australian Research Council [DP0773273]
- NSF [PHY-1068217]
- CONACyT (Mexico) [CB103366]
- National Science Foundation
- U.S. DOE [DE-AC05-76OR00033, DE-FG02-96ER40963, DE-FG52-08NA28552]
- Division Of Physics
- Direct For Mathematical & Physical Scien [1068217] Funding Source: National Science Foundation
gamma-ray transitions in Te-134, Te-135, and Te-136 were measured from Be-9-induced reactions with a radioactive Sn-132 beam at a sub-Coulomb barrier energy of 3 MeV per nucleon using particle-gamma coincidence spectroscopy. The transitions were selected by gating on alpha-like particles in a CsI detector following a combination of (Be-9,alpha 1n), (Be-9,alpha 2n), and (Be-9,alpha 3n) incomplete fusion-evaporation reactions. Distorted-wave Born approximation calculations suggest little to no contribution from the (Be-9, He-7), (Be-9, He-6), and (Be-9, He-5) direct reactions. gamma-ray transitions from previously known 2(+) circle times v 2f(7/2) and 4(+) circle times v 2f(7/2) multiplet members in Te-135 are observed. A new gamma ray is observed, assigned to the third-excited state in Te-135, and new 2(+) circle times v 2f(7/2) multiplet members are suggested. In addition, spin assignments are made by using recent one-neutron transfer data. The updated experimental data for Te-135 are compared to shell-model calculations for a relatively complete set of states up to the yrast 15/2(-), 4(+) circle times v 2f(7/2) multiplet member at 1505 keV.
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