One-Neutron Transfer Study of $^{133}$Sn and $^{209}$Pb by Particle-$\gamma$ Coincidence Spectroscopy

ORAL

Abstract

A one-neutron transfer study of $^{133}$Sn and $^{209}$Pb by particle-$\gamma$ coincidence spectroscopy is presented. The selectivity of one-neutron transfer is employed to probe single-neutron states outside of the radioactive $^{132}$Sn and stable $^{208}$Pb double-magic nuclei, which are analogous to single electrons outside of closed atomic shells (i.e., alkali metals). These recent experiments were conducted at HRIBF-ORNL using a CsI-HPGe detector array (BareBall-CLARION) to detect scattered particles and emitted $\gamma$ rays from the $^9$Be($^{132}$Sn,$^8$Be)$^{133}$Sn and $^9$Be($^{208}$Pb,$^8$Be)$^{209}$Pb direct reactions. Decay paths, level energies, cross sections, and excited-state lifetimes are determined and compared to shell-model expectations.

*Research sponsored by the Office of Nuclear Physics, U.S. Department of Energy.

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Authors

  • J.M. Allmond

    • JIHIR
    • ORNL

  • A. Galindo-Uribarri

    • ORNL

  • A.E. Stuchbery

    • ORNL

  • J.R. Beene

    • ORNL

  • R.L. Varner

    • ORNL

  • E. Padilla-Rodal

    • ORNL

  • D.C. Radford

    • ORNL

  • A. Ayres

    • ORNL

  • A. Bey

    • ORNL

  • J.C. Batchelder

    • ORNL

  • C.R. Bingham

    • ORNL

  • M.E. Howard

    • ORNL

  • K.L. Jones

    • ORNL

  • J.F. Liang

    • ORNL

  • B. Manning

    • ORNL

  • P.E. Mueller

    • ORNL

  • S.D. Pain

    • ORNL

  • W.A. Peters

    • ORNL

  • A. Ratkiewicz

    • ORNL

  • K.T. Schmitt

    • ORNL

  • D. Shapira

    • ORNL

  • M.S. Smith

    • ORNL

  • N.J. Stone

    • ORNL

  • C.-H. Yu

    • ORNL