Advances in Tagging Methods for Lifetimes of Isomeric- and Proton-Unbound States

Journal Article · Tue Nov 11 04:00:00 EST 2008 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3039826· OSTI ID:21254801

Cullen, D M ^[1]

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1. Schuster Laboratory, School Physics and Astronomy, University of Manchester, Manchester M13 9PL (United Kingdom)

This paper summarises the programme of Recoil-isomer tagging that has been performed over the last ten years at the University of Jyvaeskylae, Finland. The nuclei studied lie in the mass 130-140 region of the Segre chart very close to the proton drip line. The evolution of the isomer character is seen to change from K-isomers, at N = 74, to shape-isomers in the gamma soft N = 77 nuclei to seniority-isomers around N = 82. The influence of the proton drip line on the N = 74 isomers and possible critical-point symmetries in the N = 77 nuclei are discussed and the latest results presented. Developments of the isomer-tagging technique, using large beam currents with a dual Multi-Wire Proportional Counter setup, and an Isomer-tagged Differential-Plunger setup are discussed along with a future programme of work at Jyvaeskylae.

• OSTI ID: 21254801
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1072; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BEAM CURRENTS
GAMMA RADIATION
ISOMERS
LIFETIME
PROPORTIONAL COUNTERS
PROTONS