Search for beta-delayed proton emission from ¹¹Be

Riisager, Karsten; Borge, Maria J. G.; Briz, José. A.; Carmona-Gallardo, Mariano; Forstner, Oliver; Fraile, Luis M.; Fynbo, Hans O. U.; Garzon Camacho, Alejandro; Johansen, Jacob G.; Jonson, Björn; Lund, Morten V.; Lachner, Johannes; Madurga, Miguel; Merchel, Silke; Nacher, Enrique; Nilsson, Thomas; Steier, Peter; Tengblad, Olof; Vedia, Victoria

doi:10.1140/epja/s10050-020-00110-2

Search for beta-delayed proton emission from ¹¹Be

Riisager, K.; Borge, M. J. G.; Briz, J. A.; Carmona-Gallardo, M.; Forstner, O.; Fraile, L. M.; Fynbo, H. O. U.; Garzon Camacho, A.; Johansen, J. G.; Jonson, B.; Lund, M. V.; Lachner, J.; Madurga, M.; Merchel, S.; Nacher, E.; Nilsson, T.; Steier, P.; Tengblad, O.; Vedia, V.

We report on an attempt to reproduce the observation of beta-minus-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 beta p branching ratio of 2.2 x10^-6 can be derived.

Keywords: beta-decay; AMS

European Physical Journal A 56(2020), 100
DOI: 10.1140/epja/s10050-020-00110-2
Cited 14 times in Scopus
Contribution to WWW
arXiv:2001.02566 [nucl-ex]: https://arxiv.org/abs/2001.02566

Downloads

Open Access Version from arxiv.org

Permalink: https://www.hzdr.de/publications/Publ-29780