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

Publication ,  Journal Article
Simon, VV; Brunner, T; Chowdhury, U; Eberhardt, B; Ettenauer, S; Gallant, AT; Mané, E; Simon, MC; Delheij, P; Pearson, MR; Audi, G; Gwinner, G ...
Published in: Physical Review C - Nuclear Physics
June 7, 2012
Published version (DOI)

The neutron-rich mass region around A≈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 94,97,98Rb and 94 ,97-99Sr have uncertainties of less than 4 keV and show deviations of up to 11σ 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. © 2012 American Physical Society.

Duke Scholars

Jens Dilling
Author Jens Dilling Physics

Published In

Physical Review C - Nuclear Physics

DOI

10.1103/PhysRevC.85.064308

EISSN

1089-490X

ISSN

0556-2813

Publication Date

June 7, 2012

Volume

85

Issue

6

Related Subject Headings

  • Nuclear & Particles Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
 

Citation

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Simon, V. V., Brunner, T., Chowdhury, U., Eberhardt, B., Ettenauer, S., Gallant, A. T., … Dilling, J. (2012). Penning-trap mass spectrometry of highly charged, neutron-rich Rb and Sr isotopes in the vicinity of A≈100. Physical Review C - Nuclear Physics, 85(6). https://doi.org/10.1103/PhysRevC.85.064308
Simon, V. V., T. Brunner, U. Chowdhury, B. Eberhardt, S. Ettenauer, A. T. Gallant, E. Mané, et al. “Penning-trap mass spectrometry of highly charged, neutron-rich Rb and Sr isotopes in the vicinity of A≈100.” Physical Review C - Nuclear Physics 85, no. 6 (June 7, 2012). https://doi.org/10.1103/PhysRevC.85.064308.
Simon VV, Brunner T, Chowdhury U, Eberhardt B, Ettenauer S, Gallant AT, et al. Penning-trap mass spectrometry of highly charged, neutron-rich Rb and Sr isotopes in the vicinity of A≈100. Physical Review C - Nuclear Physics. 2012 Jun 7;85(6).
Simon, V. V., et al. “Penning-trap mass spectrometry of highly charged, neutron-rich Rb and Sr isotopes in the vicinity of A≈100.” Physical Review C - Nuclear Physics, vol. 85, no. 6, June 2012. Scopus, doi:10.1103/PhysRevC.85.064308.
Simon VV, Brunner T, Chowdhury U, Eberhardt B, Ettenauer S, Gallant AT, Mané E, Simon MC, Delheij P, Pearson MR, Audi G, Gwinner G, Lunney D, Schatz H, Dilling J. Penning-trap mass spectrometry of highly charged, neutron-rich Rb and Sr isotopes in the vicinity of A≈100. Physical Review C - Nuclear Physics. 2012 Jun 7;85(6).

Published In

Physical Review C - Nuclear Physics

DOI

10.1103/PhysRevC.85.064308

EISSN

1089-490X

ISSN

0556-2813

Publication Date

June 7, 2012

Volume

85

Issue

6

Related Subject Headings

  • Nuclear & Particles Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics