Search for beta-delayed proton emission from 11 Be
Journal article, 2020
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.
Author
K. Riisager
Aarhus University
M. Borge
CSIC - Instituto de Estructura de la Materia (IEM)
CERN
J. A. Briz
CSIC - Instituto de Estructura de la Materia (IEM)
M. Carmona-Gallardo
Complutense University
O. Forstner
University of Vienna
L. M. Fraile
Complutense University
H. O. U. Fynbo
Aarhus University
A. Garzon Camacho
CSIC - Instituto de Estructura de la Materia (IEM)
Jacob G. Johansen
Aarhus University
Björn Jonson
Chalmers, Physics, Subatomic, High Energy and Plasma Physics
M. V. Lund
Aarhus University
J. Lachner
University of Vienna
M. Madurga
CERN
S. Merchel
Helmholtz
E. Nacher
CSIC - Instituto de Estructura de la Materia (IEM)
Thomas Nilsson
Chalmers, Physics
Peter Steier
University of Vienna
O. Tengblad
CSIC - Instituto de Estructura de la Materia (IEM)
V. Vedia
Complutense University
European Physical Journal A
1434-6001 (ISSN) 1434-601X (eISSN)
Vol. 56 3 100Exotiska nukleära system vid gränsen för existens - fysik i frontlinjen med perspektiv mot FAIR
Swedish Research Council (VR) (2017-03839), 2018-01-01 -- 2021-12-31.
Subject Categories
Subatomic Physics
Physical Sciences
DOI
10.1140/epja/s10050-020-00110-2