Recent progress in studying beta-delayed neutron emission

ORAL

Abstract

Beta-delayed neutron emission is a dominating decay process for most of the neutron-rich nuclei far from the stability line. Experimental studies on beta-delayed neutrons are of great significance in many fields, including nuclear physics, astrophysics, and industrial applications. It is a sensitive probe to the beta-decay feedings above neutron separation energy, which is related to the nuclear structures of parent and daughter nuclei. The decay process itself carries fundamental information on how neutron unbound states are formed in beta decay. Owing to its importance, rapid progress has been made in measuring beta-delayed neutron emission at many different radioactive ion-beam facilities in the last decade. In this contribution, I will present a few highlights of our recent experimental effort in studying beta-delayed neutrons in a range of nuclei with mass numbers A=24~132. The experimental findings were compared with various theoretical models, gaining valuable insights into the shell evolution in exotic nuclei as well as the statistical/nonstatistical natures of beta-delayed neutron emission in medium-heavy and heavy isotopes.

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Publication: R. Yokoyama et al., Phys. Rev. C 100, 031302(R) (2019)
R. Yokoyama et al., Phys. Rev. C 108, 064307 (2023)
Z. Y. Xu et al., Phys. Rev. Lett. 131, 022501 (2023)
I. Cox et al., Phys. Rev. Lett. 132, 152503 (2024)
S. Neupane et al., to be published
Z. Y. Xu et al., to be published

Presenters

  • Zhengyu Xu

    University of Tennessee, University of Tennessee Knoxville

Authors

  • Zhengyu Xu

    University of Tennessee, University of Tennessee Knoxville

  • Robert K. Grzywacz

    University of Tennessee

  • Miguel Madurga

    University of Tennessee

  • Nico Braukman

    University of Tennessee, Knoxville

  • James M Christie

    University of Tennessee

  • Ian C Cox

    University of Tennessee

  • Peter Dyszel

    University of Tennessee, Knoxville

  • Donnie T Hoskins

    University of Tennessee Knoxville, University of Tennessee

  • Noritaka Kitamura

    University of Tennessee-Knoxville & University of Tokyo, University of Tennessee

  • Shree Neupane

    Lawrence Livermore National Laboratory

  • Jack Peltier

    University of Tennessee, Knoxville

  • Kevin Siegl

    University of Tennessee

  • Maninder Singh

    Los Alamos National Laboratory

  • Rin Yokoyama

    University of Tokyo