β -decay and neutron emission studies of r-process nuclei near 137Sb
Abstract
The β-decays of very neutron rich nuclides in the A=130 region, including the astrophysically relevant nuclei 137Sb, were studied experimentally at the Helmholtzzentrum für Schwerionenforchung (GSI) using a stack of four 500 μm thick double-sided silicon strip detectors in conjunction with the Mainz 4 π neutron long counter detector. The system allows the time correlation of ion implant and decay events and the detection of neutrons emitted during the decay. We measured half-lives and branchings for β-delayed neutron emission (Pn values) for a number of nuclei in the region. The impact of our results on various types of models for the astrophysical rapid neutron capture process (r-process) is explored.
- Publication:
-
APS Division of Nuclear Physics Meeting Abstracts
- Pub Date:
- October 2011
- Bibcode:
- 2011APS..DNP.GG008S