|
|||||
|
|
Nuclear structure of 189Tl states studied via \beta^{{+}}_{} /EC decay and laser spectroscopy of 189m+gPb |
|
| Authors: | J Sauvage J Genevey B Roussière S Franchoo A N Andreyev N Barré J -F Clavelin H De Witte D V Fedorov V N Fedoseyev L M Fraile X Grave G Huber M Huyse H B Jeppesen U K?ster P Kunz S R Lesher B A Marsh I Mukha J Oms M Seliverstov I Stefanescu K Van de Vel J Van de Walle P Van Duppen Yu M Volkov |
| Institution: | 1. Institut de Physique Nucléaire, IN2P3-CNRS/Université Paris-Sud, F-91406, Orsay Cedex, France 2. Laboratoire de Physique Subatomique et de Cosmologie, IN2P3-CNRS/Université Joseph Fourier, F-38026, Grenoble Cedex, France 3. Institut für Physik, Johannes Gutenberg Universit?t, D-55099, Mainz, Germany 4. ISOLDE, CERN, CH-1211, Genève, Switzerland 5. Instituut voor Kern- en Stralingsfysica, K.U. Leuven, B-3001, Leuven, Belgium 6. Oliver Lodge Laboratory, University of Liverpool, Liverpool, L69 7ZE, UK 7. TRIUMF, V6T 2A3, Vancouver, BC, Canada 8. Petersburg Nuclear Physics Institute, 188350, Gatchina, Russia 9. Institut Laue-Langevin, 38042, Grenoble cedex 9, France |
| Abstract: | The  /EC decay of 189m, gPb has been studied at the ISOLDE facility using nuclear spectroscopy and in-source laser spectroscopy. A level scheme of
189Tl has been built from  - coincidence relationships and information on the feeding of some excited levels of 189Tl provided by the hyperfine spectra obtained from laser ionization. The half-lives of both the 13/2+ and 3/2-
189Pb isomers have been estimated to be T
1/2 = 50±3 s and T
1/2 = 39±8 s, respectively. Calculations have been performed for different oblate and prolate nuclear deformations using an axial-rotor
coupled to one-quasiparticle model, a structure has been suggested for the low-lying levels of the 189Tl nucleus. |
| Keywords: | PACS" target="_blank">PACS 21 10 Hw Spin parity and isobaric spin 23 20 |
| 本文献已被 SpringerLink 等数据库收录！ | |