Isomer Studies for Nuclei near the Proton Drip Line in the Mass 130-160 Region
- School of Physics and Astronomy, University of Manchester, Manchester M13 9PL (United Kingdom)
- Department of Physics, University of Jyvaeskylae, Jyvaeskylae, FIN-40014 (Finland)
This report details the status of an experimental research programme which has studied isomeric states in the mass 130-160 region of the nuclear chart. Several new isomers have been established and characterised near the proton drip line using a recoil isomer tagging technique at the University of Jyvaeskylae, Finland. The latest experiments have been performed with a modified setup where the standard GREAT focal-plane double-sided silicon-strip detector was changed to a dual multi-wire proportional-counter arrangement. This new setup has improved capability for short-lived isomer studies where high focal-plane rates can be tolerated. The results of key recent experiments for nuclei situated above ({sup 153}Yb,{sup 152}Tm) and below ({sup 136}Pm,{sup 142}Tb) the N = 82 shell gap were presented along with an interpretation for the isomers. Finally, the future prospects of the technique, using an isomer-tagged differential-plunger setup, were discussed. This technique will be capable of establishing the deformation of the states above the isomers and will aid in the process of assigning underlying single-particle configurations to the isomeric states.
- OSTI ID:
- 21039475
- Journal Information:
- AIP Conference Proceedings, Vol. 961, Issue 1; Conference: PROCON 2007: International conference on proton emitting nuclei and related topics, Lisbon (Portugal), 17-23 Jun 2007; Other Information: DOI: 10.1063/1.2827270; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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