Search for beta-delayed proton emission from 11 Be
Artikel i vetenskaplig tidskrift, 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.
Författare
K. Riisager
Aarhus Universitet
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
Universidad Complutense de Madrid
O. Forstner
Universität Wien
L. M. Fraile
Universidad Complutense de Madrid
H. O. U. Fynbo
Aarhus Universitet
A. Garzon Camacho
CSIC - Instituto de Estructura de la Materia (IEM)
Jacob G. Johansen
Aarhus Universitet
Björn Jonson
Chalmers, Fysik, Subatomär, högenergi- och plasmafysik
M. V. Lund
Aarhus Universitet
J. Lachner
Universität Wien
M. Madurga
CERN
S. Merchel
Helmholtz
E. Nacher
CSIC - Instituto de Estructura de la Materia (IEM)
Thomas Nilsson
Chalmers, Fysik
Peter Steier
Universität Wien
O. Tengblad
CSIC - Instituto de Estructura de la Materia (IEM)
V. Vedia
Universidad Complutense de Madrid
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
Vetenskapsrådet (VR) (2017-03839), 2018-01-01 -- 2021-12-31.
Ämneskategorier
Subatomär fysik
Fysik
DOI
10.1140/epja/s10050-020-00110-2