4.5 Article

2π1v states populated in 135Te from 9Be-induced reactions with a 132Sn beam

期刊

PHYSICAL REVIEW C
卷 90, 期 1, 页码 -

出版社

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.90.014322

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资金

  1. Office of Nuclear Physics
  2. U.S. Department of Energy
  3. Australian Research Council [DP0773273]
  4. NSF [PHY-1068217]
  5. CONACyT (Mexico) [CB103366]
  6. National Science Foundation
  7. U.S. DOE [DE-AC05-76OR00033, DE-FG02-96ER40963, DE-FG52-08NA28552]
  8. Division Of Physics
  9. Direct For Mathematical & Physical Scien [1068217] Funding Source: National Science Foundation

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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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