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Joakim

Joakim Cederkäll

Professor

Joakim

Search for beta-delayed charged particles from the halo nucleus 14Be

Author

  • H. Jeppesen
  • U.C. Bergmann
  • M.J.G. Borge
  • Joakim Cederkäll
  • V.N. Fedoseyev
  • H.O.U. Fynbo
  • V.Y. Hansper
  • Björn Jonson
  • Karin Markenroth Bloch
  • V.I. Mishin
  • T. Nilsson
  • G. Nyman
  • K. Riisager
  • O Tengblad
  • K Wilhelmsen Rolander

Summary, in English

In a search for β-delayed charged particles from 14Be we have obtained an upper limit on β-delayed greek small letter alpha particles, B(βgreek small letter alpha)<1.2×10−4, and found evidence for β-delayed tritons at intensity of 6×10−5<B(βt)<4×10−4 (both at 95% confidence level). By adding information on the β-delayed neutron branches from direct measurements at low neutron energy and indirect detection via recoiling nuclei at high energy, and by including also information from earlier experiments, we deduce the β strength distribution from 14Be. This differs significantly from shell-model calculations at high excitation energy.

Publishing year

2002

Language

English

Pages

119-130

Publication/Series

Nuclear Physics, Section A

Volume

709

Issue

1-4

Document type

Journal article

Publisher

Elsevier

Topic

  • Subatomic Physics

Keywords

  • Time distribution analysis
  • 14Be(β−)
  • (β−n) [from Ta(p
  • X)]
  • measured
  • β-delayed charged particle spectra
  • branching ratios
  • β-delayed neutron spectra
  • Mass separated source
  • Si-gas telescope

Status

Published

ISBN/ISSN/Other

  • ISSN: 0375-9474