Analysis of decay data from neutron-rich nuclei

6 pages, 3 figures, 2 tables.-- PACS nrs.: 23.40.-s; 27.20.+n; 27.30.+t; 07.05.Kf.The β-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 β-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.This work was supported in part by the HPRI program, the Swedish Natural Science Research Council (NFR) and the Spanish CICYT under contract AEN 1999-1046-C02-01.Peer reviewe