Margareta Hellström
Researcher
Evolution of the N=82 Shell Gap below 132Sn Inferred from Core Excited States in 131In
Author
Summary, in English
The gamma-ray decay of ail excited state in In-131, the one proton hole neighbor of the doubly magic (132)sn has been measured. A high-spin, core-excited isomer with T-1/2 = 630(60) us was identified following production by both relativistic fragmentation of a Xe-136 beam and fission Of a U-238 beam. This state deexcites by a single gamma-ray branch of 3782(2) keV from which direct evidence for the size of the N = 82 shell gal) is inferred. The results are discussed in comparison to a shell-model Calculation including configurations across the closed shells at N = 82 and Z = 50. (C) 2009 Elsevier B.V. All rights reserved.
Department/s
- Nuclear physics
- Dept of Physical Geography and Ecosystem Science
Publishing year
2009
Language
English
Pages
313-316
Publication/Series
Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume
672
Issue
4-5
Document type
Journal article (letter)
Publisher
Elsevier
Topic
- Subatomic Physics
Status
Published
Research group
- Nuclear Structure
ISBN/ISSN/Other
- ISSN: 0370-2693