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

P. Humby, A. Simon, C. W. Beausang, J. M. Allmond, J. T. Burke, R. J. Casperson, R. Chyzh, M. Dag, K. Gell, R. O. Hughes, J. Koglin, E. McCleskey, M. McCleskey, S. Ota, T. J. Ross, A. Saastamoinen, T. Tarlow, G. Vyas

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

New levels and γ-ray transitions were identified in Sm150,152 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 Sm150, 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 Sm152.

Original languageEnglish
Article number064314
JournalPhysical Review C
Volume94
Issue number6
DOIs
StatePublished - 14 Dec 2016
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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