Investigation of low/medium spin excited states in $^{150-154}$Sm via the (p,d) and (p,t) reactions

ORAL

Abstract

Low/medium spin excited states of $^{151,153}$Sm and $^{150,152}$Sm were studied via the (p,d) and (p,t) reactions, respectively, utilizing the STARLITER arrays at the Cyclotron Institute of Texas A\&M University. In the experiment $^{152}$Sm and $^{154}$Sm targets were bombarded with 25 MeV protons and the outgoing light charged particles (p, d and t) in the exit channels were detected using the STARS $\Delta E$-$E$ silicon telescope, thus allowing particle identification and a measurement of the nuclear excitation energy. Six BGO shielded HPGe detectors were used to observe the emitted gamma rays in coincidence with the particles. A post-run measurement of gamma rays emitted from the activated target allowed an improved measurement of the half life of the 96 minute $J^{\pi}=8^{-}$ isomer of $^{152}$Eu. Preliminary results are presented.

*This work was partly supported by the US Department of Energy under Grants No. DE-FG52-06NA26206 and No. DE-FG02-05ER41379.

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Authors

  • P. Humby

    • University of Richmond, University of Surrey

  • A. Simon

    • University of Richmond

  • C. Beausang

    • University of Richmond

  • K. Gell

    • University of Richmond

  • T. Tarlow

    • University of Richmond

  • G. Vyas

    • University of Richmond

  • T.J. Ross

    • University of Kentucky

  • R.O. Hughes

    • Lawrence Livermore National Laboratory

  • J.T. Burke

    • Lawrence Livermore National Laboratory

  • R.J. Casperson

    • Lawrence Livermore National Laboratory

  • J. Koglin

    • Lawrence Livermore National Laboratory

  • S. Ota

    • Rutgers

  • J.M. Allmond

    • Oak Ridge National Laboratory

  • M. McCleskey

    • Texas A\&M University

  • E. McCleskey

    • Texas A\&M University

  • A. Saastamoinen

    • Texas A\&M University

  • R. Chyzh

    • Texas A\&M University

  • M. Dag

    • Texas A\&M University