Skip to Main content Skip to Navigation
Journal articles

Penning-trap mass spectrometry of highly charged, neutron-rich Rb and Sr isotopes in the vicinity of A approximate to 100

V. V. Simon T. Brunner U. Chowdhury B. Eberhardt S. Ettenauer A. T. Gallant E. Mané M. C. Simon P. Delheij M. R. Pearson G. Audi 1 G. Gwinner D. Lunney 1 H. Schatz J. Dilling
1 CSNSM SNO
CSNSM - Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse, CSNSM - Centre de Sciences Nucléaires et de Sciences de la Matière : UMR8609
Abstract : The neutron-rich mass region around A approximate to 100 presents challenges for modeling the astrophysical r process because of rapid shape transitions. We report on mass measurements using the TITAN Penning trap at TRIUMF-ISAC to attain more reliable theoretical predictions of r-process nucleosynthesis paths in this region. A new approach using highly charged (q = 15+) ions has been applied which considerably saves measurement time and preserves accuracy. New mass measurements of neutron-rich Rb-94,Rb-97,Rb-98 and Sr-94,Sr-97-99 have uncertainties of less than 4 keV and show deviations of up to 11 sigma when compared to previous measurements. An analysis using a parameterized r-process model is performed and shows that mass uncertainties for the A = 90 abundance region are eliminated.
Document type :
Journal articles
Complete list of metadatas

http://hal.in2p3.fr/in2p3-00716289
Contributor : Christine Hadrossek <>
Submitted on : Tuesday, July 10, 2012 - 11:58:29 AM
Last modification on : Wednesday, September 16, 2020 - 5:42:37 PM

Links full text

Identifiers

Collections

Citation

V. V. Simon, T. Brunner, U. Chowdhury, B. Eberhardt, S. Ettenauer, et al.. Penning-trap mass spectrometry of highly charged, neutron-rich Rb and Sr isotopes in the vicinity of A approximate to 100. Physical Review C, American Physical Society, 2012, 85, pp.064308. ⟨10.1103/PhysRevC.85.064308⟩. ⟨in2p3-00716289⟩

Share

Metrics

Record views

101