Evolution of the N=82 Shell Gap below 132Sn Inferred from Core Excited States in 131In

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.

• Author: M. Gorska; L. Caceres; H. Grawe; M. Pfuetzner; A. Jungclaus; S. Pietri; E. Werner-Malento; Z. Podolyak; P. H. Regan; Dirk Rudolph; R. Detistov; S. Lalkovski; V. Modamio; J. Walker; T. Beck; P. Bednarczyk; P. Doornenbal; H. Geissel; J. Gerl; J. Grebosz; Robert Hoischen; I. Kojouharov; N. Kurz; W. Prokopowicz; H. Schaffner; H. Weick; H. -J. Wollersheim; K. Andgren; J. Benlliure; G. Benzoni; A. M. Bruce; E. Casarejos; B. Cederwall; F. C. L. Crespi; B. Hadinia; Margareta Hellström; G. Ilie; A. Khaplanov; M. Kmiecik; R. Kumar; A. Maj; S. Mandal; F. Montes; S. Myalski; G. S. Simpson; S. J. Steer; S. Tashenov; O. Wieland; Zs. Dombradi; R. Reiter; D. Sohler
• 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
• Links: http://dx.doi.org/10.1016/j.physletb.2009.01.027
• Document type: Journal article (letter)
• Publisher: Elsevier
• Topic: Subatomic Physics
• Status: Published
• Research group: Nuclear Structure
• ISBN/ISSN/Other: ISSN: 0370-2693