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Title: Investigation of discrete states and quasidiscrete structures observed in 150Sm and 152Sm using the ( p,tγ) reaction

New levels and γ-ray transitions were identified in 150,152Sm utilizing the (p,t) reaction and particle-γ coincidence data. A large, peak-like structure observed between 2.3–3.0 MeV in excitation energy in the triton energy spectra was also investigated. The orbital angular-momentum transfer was probed by comparing the experimental angular distributions of the outgoing tritons to calculated distorted wave Born approximation curves. The angular distributions of the outgoing tritons populating the peak-like structure are remarkably similar in the two reactions and are significantly different from the angular distributions associated with the nearby continuum region. Relative partial cross sections for the observed levels, angle averaged between 34 and 58 degrees, were measured. In 150Sm, 39(4)% of the strength of the peak-like structure could be accounted for by the observed discrete states. This compares with a value of 93(15)% for 152Sm
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [5] ;  [5] ;  [6] ;  [6] ;  [3] ;  [5] ;  [5] ;  [6] ;  [6] ;  [5] ;  [7] ;  [6] ;  [3] ;  [3]
  1. Univ. of Richmond, Richmond, VA (United States); Univ. of Surrey, Surrey (United Kingdom)
  2. Univ. of Richmond, Richmond, VA (United States); Univ. of Notre Dame, IN (United States)
  3. Univ. of Richmond, Richmond, VA (United States)
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  5. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  6. Texas A & M Univ., College Station, TX (United States)
  7. Univ. of Kentucky, Lexington, KY (United States)
Publication Date:
Grant/Contract Number:
AC05-00OR22725; SC0014277; FG02-05ER41379; FG02-93ER40773; NA0002914; NA0001801; FG52-09NA29467; AC52-07NA27344
Type:
Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 94; Journal ID: ISSN 2469-9985
Publisher:
APS
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org:
USDOE Office of Science (SC)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
OSTI Identifier:
1337046
Alternate Identifier(s):
OSTI ID: 1335725