New experiments on neutron rich r-process Ge - Br isotopes at the NSCL

M. Quinn, A. Aprahamian, S. Almaraz, B. B. Skorodumov, A. Woehr, J. Pereira, A. Becerril, T. Elliot, A. Estrade, D. Galaviz, L. Kern, G. Lorusso, P. Mantica, M. Matos, F. Montes, H. Schatz, S. Hennrich, K. L. Kratz, B. Pfeiffer, E. Smith

Research output: Contribution to journalConference articlepeer-review


Previously unknown properties of neutron rich Ge-Br isotopes have been studied at the NSCL at Michigan State University. Production was by fragmentation of a 120 MeV/u 136Xe beam on a Be target. The A1900 fragment separator blocked unwanted species produced in this reaction. The transmitted nuclei were implanted in a dual-sided silicon detector, which was part of the Beta Counting System detector. Implanted nuclei were identified by the ΔE-time of flight method. Beta decays were then identified as low gain signals from the same pixel as a previous implant. Beta-delayed neutrons were detected by the NERO neutron counter, which surrounded the Beta Counting System. This provided measurements of the β decay half-lives and β-delayed neutron emission probabilities.

Original languageEnglish
JournalProceedings of Science
StatePublished - 2006
Event9th International Symposium on Nuclear Astrophysics - Nuclei in the Cosmos, NIC 2006 - Geneva, Switzerland
Duration: Jun 25 2006Jun 30 2006


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