Nuclear structure studies of $^{\mathrm{202}}$Hg and $^{\mathrm{203}}$Tl using deep-inelastic collisions

POSTER

Abstract

Nuclei with a few valence nucleons outside $^{\mathrm{208}}$Pb are crucial for testing the nuclear shell model and guiding our understanding of single particle structure. Data in this region are also potentially relevant to nuclear astrophysics. This analysis focused on the high-spin structure of $^{\mathrm{202}}$Hg and $^{\mathrm{203}}$Tl. Excited states in these nuclei were populated through deep-inelastic reactions from a beam of $^{\mathrm{136}}$Xe and that was incident on a thick target of $^{\mathrm{208}}$Pb in the Gammasphere array at Argonne National Laboratory. The level schemes of $^{\mathrm{202}}$Hg and $^{\mathrm{203}}$Tl were extended by locating a new isomer in each nucleus and a number of new high-spin states built on top of the isomers. The newly-observed states will be discussed in the context of the shell model.

*Supported by US DOE under the SULI Program and Grant Nos. DE-FG06-97ER41026 and DE-FG02-94ER40834 and Contract Nos. DE-AC02-06CH11357 and DE-AC02-06CH10886.

Authors

  • Emily Gass

    • Stony Brook University
  • E. A. McCutchan

    • National Nuclear Data Center, Brookhaven National Laboratory
    • BNL
    • Brookhaven National Laboratory
  • A. A. Sonzogni

    • Brookhaven National Laboratory
  • J. S. Barrett

    • Oregon State University
  • W. LoveLand

    • Oregon State University
  • R. Yanez

    • Oregon State University
  • S. Zhu

    • Argonne National Laboratory
  • A. D. Ayangeakaa

    • Argonne National Laboratory
  • M. P. Carpenter

    • Argonne National Laboratory
  • J. P. Greene

    • Argonne National Laboratory
  • R. V. F. Janssens

    • Argonne National Laboratory
  • T. Lauritsen

    • Argonne National Laboratory
  • C. J. Chiara

    • University of Maryland
  • J. L. Harker

    • University of Maryland
  • W. B. Walters

    • University of Maryland