Accurate masses of neutron-deficient nuclides close to Z=82

Authors
Schwarz, S Ames, F Audi, G Beck, D Bollen, G De Coster, C Dilling, J Engels, O Fossion, R Ramos, JEG Henry, S Herfurth, F Heyde, K Kellerbauer, A Kluge, HJ Kohl, A Lamour, E Lunney, D Martel, I Moore, RB Oinonen, M Raimbault-Hartmann, H Scheidenberger, C Sikler, G Szerypo, J Weber, C
Citation
S. Schwarz et al., Accurate masses of neutron-deficient nuclides close to Z=82, NUCL PHYS A, 693(3-4), 2001, pp. 533-545
Citations number
30
Categorie Soggetti
Physics
Journal title
NUCLEAR PHYSICS A
ISSN journal
03759474 → ACNP
Volume
693
Issue
3-4
Year of publication
2001
Pages
533 - 545
Database
ISI
SICI code
0375-9474(20011022)693:3-4<533:AMONNC>2.0.ZU;2-S
Abstract
Mass measurements with the Penning-trap mass spectrometer ISOLTRAP at ISOLD E/CERN are extended to nonsurface ionizable species using newly developed i on-beam bunching devices. Masses of Hg179-197, Pb-196,Pb-198, Bi-197, Po-19 8 and At-203 were determined with an accuracy of 1 x 10(-7) corresponding t o deltam approximate to 20 keV. Applying a resolving power of up to 3.7 x 1 0(6) ground and isomeric states of Hg-185,Hg-187,Hg-191,Hg-193,Hg-197 were separated. First experimental values for the isomeric excitation energy of Hg-187,Hg-191 are obtained. A least-squares adjustment has been performed a nd theoretical approaches are discussed to model the observed fine structur e in the binding energy. (C) 2001 Elsevier Science B.V. All rights reserved .