Accurate mass determination of neutron-deficient nuclides close to Z=82 with ISOLTRAP

Authors
Schwarz, S Ames, F Audi, G Beck, D Bollen, G Dilling, J Herfurth, F Kluge, HJ Kellerbauer, A Kohl, A Lunney, D Moore, RB Raimbault-Hartmann, H Scheidenberger, C Sikler, G Szerypo, J
Citation
S. Schwarz et al., Accurate mass determination of neutron-deficient nuclides close to Z=82 with ISOLTRAP, HYPER INTER, 132(1-4), 2001, pp. 337-340
Citations number
10
Categorie Soggetti
Physics
Journal title
HYPERFINE INTERACTIONS
ISSN journal
03043843 → ACNP
Volume
132
Issue
1-4
Year of publication
2001
Pages
337 - 340
Database
ISI
SICI code
0304-3843(2001)132:1-4<337:AMDONN>2.0.ZU;2-N
Abstract
The recent implementation of gas-filled radiofrequency traps for efficient ion beam bunching extended the applicability of the Penning trap mass spect rometer ISOLTRAP/CERN to non-surface ionizable species. In a first series o f successful runs the masses of Hg182-197, Pb-196,Pb-198, Bi-197, Po-198 an d At-203 have been determined with an accuracy of 1 . 10(-7). In order to u nambiguously determine the ground state mass the ground and isomeric states of Hg-185,Hg-187,Hg-191,Hg-193,Hg-197 were separated applying a resolving power of up to 3.7 . 10(6). First experimental values for the isomeric exci tation energy of Hg-187,Hg-191 were obtained.