Search for beta-delayed proton emission from 11 Be

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

  • K. Riisager
  • M. J.G. Borge, CSIC - Instituto de Estructura de la Materia (IEM), ISOLDE, CERN
  • ,
  • J. A. Briz, CSIC - Instituto de Estructura de la Materia (IEM)
  • ,
  • M. Carmona-Gallardo, Complutense University
  • ,
  • O. Forstner, Universitat Wien
  • ,
  • L. M. Fraile, Complutense University
  • ,
  • H. O.U. Fynbo
  • A. Garzon Camacho, CSIC - Instituto de Estructura de la Materia (IEM)
  • ,
  • J. G. Johansen
  • B. Jonson, Chalmers University of Technology
  • ,
  • M. V. Lund
  • ,
  • J. Lachner, Universitat Wien
  • ,
  • M. Madurga, ISOLDE, CERN.
  • ,
  • S. Merchel, Helmholtz-Zentrum Dresden-Rossendorf
  • ,
  • E. Nacher, CSIC - Instituto de Estructura de la Materia (IEM)
  • ,
  • T. Nilsson
  • P. Steier, Universitat Wien
  • ,
  • O. Tengblad, CSIC - Instituto de Estructura de la Materia (IEM)
  • ,
  • V. Vedia, Complutense University

We report on an attempt to reproduce the observation of β--delayed proton emission from 11Be through detection of the final state nucleus 10Be with accelerator mass spectrometry. Twelve samples were collected at the ISOLDE facility at CERN at different separator settings, allowing tests of different sources of contamination to be carried out. The observed amounts of 10Be per collected 11Be rule out several contamination sources, but do not agree internally. Formation of BeH molecular ions in the ion source may explain our data, in which case an upper limit of the βp branching ratio of 2.2 × 10 - 6 can be derived.

OriginalsprogEngelsk
Artikelnummer100
TidsskriftEuropean Physical Journal A
Vol/bind56
Nummer3
Antal sider8
ISSN1434-6001
DOI
StatusUdgivet - mar. 2020

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