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

Journal Article · · Physical Review C
 [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)
+ Show Author Affiliations
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
Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE; USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC)
Grant/Contract Number:
AC05-00OR22725; AC52-07NA27344; FG02-05ER41379; FG02-93ER40773; FG52-09NA29467; NA0001801; NA0002914; SC0014277
OSTI ID:
1337046
Alternate ID(s):
OSTI ID: 1335725
OSTI ID: 1557939
Report Number(s):
LLNL-JRNL--737686; KB0401022; ERKBP06
Journal Information:
Physical Review C, Journal Name: Physical Review C Vol. 94; ISSN 2469-9985
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

References (30)

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journal September 2010
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Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
Physics
Nuclear science and engineering
Physics - Nuclear physics and radiation physics