Analysis of decay data from neutron-rich nuclei

• Published in: The European physical journal. A, Hadrons and nuclei Vol. 11; no. 3; pp. 279 - 284
• Main Authors: Bergmann, U.C., Borge, M.J.G., Cederkäll, J., Forssén, C., Fumero, E., Fynbo, H.O.U., Gausemel, H., Jeppesen, H., Jonson, B., Markenroth, K., Nilsson, T., Nyman, G., Riisager, K., Simon, H., Tengblad, O., Weissman, L., Wenander, F., Wilhelmsen Rolander, K.
• Format: Journal Article
• Language: English
• Published: 2001
• Subjects: BETA-DECAY; NEON ISOTOPES
• ISSN: 1434-6001; 1434-601X; 1434-601X
• DOI: 10.1007/s100500170066

The beta -decays of the neutron-rich nuclei Be-12 and Ne-29 have been studied. The statistical correlations between the almost identical half-lives of Be-12 and its daughter B-12 are analysed for a large sample of Be-12 decay data. Stringent mutual bounds are obtained on the parameter set, leading to a precise determination of the Be-12 half-life of 21.50 +/- 0.04 ms. From a simultaneous detection of beta -particles and neutrons from the decay of Ne-29 the neutron emission probability, P-n, is determined to 17 +/- 5%. No indication of two-neutron emission is seen from this nucleus. An upper limit of 2.2% (90% confidence level) is established for P-2n.