Beta-delayed neutron studies performed with trapped ions

ORAL

Abstract

A detailed study of the beta-delayed neutron ($\beta$n) emission properties of $^{135,136}$Sb, $^{137,138,140}$I, and $^{144,145}$Cs was performed at the CARIBU facility by confining ions in the Beta-decay Paul Trap and measuring the decay particles with an array of radiation detectors. Decay branching ratios and energy spectra of the emitted neutrons were inferred from a measurement of the nuclear-recoil time-of-flight, thereby circumventing the limitations associated with direct neutron detection. The isotopes studied have importance in the areas of nuclear energy and \textit{r}-process nucleosynthesis. The results of this experiment will be presented and compared with direct neutron measurements. In the case of $^{136}$Sb, the $\beta$n energy spectrum has been measured for the first time.

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Authors

  • Barbara Wang

    • Lawrence Livermore National Laboratory

  • A. Czeszumska

    • Lawrence Livermore National Laboratory

  • S. Caldwell

    • University of Chicago

  • N. Scielzo

    • Lawrence Livermore National Laboratory

  • J. Clark

    • Argonne National Laboratory

  • G. Savard

    • Argonne National Laboratory

  • A. Aprahamian

    • University of Notre Dame

  • M. Burkey

    • Lawrence Livermore National Laboratory

  • C. Chiara

    • Argonne National Laboratory

  • J. Harker

    • Argonne National Laboratory

  • A. Levand

    • Argonne National Laboratory

  • S. Marley

    • Louisiana State University, Baton Rouge

  • G. Morgan

    • University of Manitoba, Winnipeg

  • J. Munson

    • University of California, Berkeley

  • E. Norman

    • University of California, Berkeley

  • A. Nystrom

    • University of Notre Dame

  • R. Orford

    • McGill University, Montreal

  • S. Padgett

    • Lawrence Livermore National Laboratory

  • A. Perez Galvan

    • Argonne National Laboratory

  • K. Sharma

    • University of Manitoba, Winnipeg

  • K. Siegl

    • University of Notre Dame

  • S. Strauss

    • University of Notre Dame