https://doi.org/10.1140/epja/i2006-10297-y
Regular Article - Nuclear Astrophysics
Precise atomic masses of neutron-rich Br and Rb nuclei close to the r-process path
Department of Physics, University of Jyväskylä, P.O. Box 35 (YFL), FIN-40014, Finland
* e-mail: saidur.rahaman@phys.jyu.fi
Received:
18
October
2006
Accepted:
2
March
2007
Published online:
3
April
2007
The Penning trap mass spectrometer JYFLTRAP, coupled to the Ion-Guide Isotope Separator On-Line (IGISOL) facility at Jyväskylä, was employed to measure the atomic masses of neutron-rich 85-92Br and 94-97Rb isotopes with a typical accuracy less than 10keV. Discrepancies with the older data are discussed. Comparison to different mass models is presented. Details of nuclear structure, shell and subshell closures are investigated by studying the two-neutron separation energy and the shell gap energy.
PACS: 21.10.Dr Binding energies and masses – / 27.50.+e 59≤A≤89 – / 27.60.+j 90≤A≤149 – / 07.75.+h Mass spectrometers –
© Società Italiana di Fisica and Springer-Verlag, 2007
