Penning-trap mass spectrometry of highly charged, neutron-rich Rb and Sr isotopes in the vicinity of $\mathbf{A}\ensuremath{\approx}\mathbf{100}$

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

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, G. Gwinner, D. Lunney, H. Schatz, and J. Dilling

Phys. Rev. C 85, 064308 – Published 7 June 2012

Abstract

The neutron-rich mass region around $A \approx 100$ 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 $^{94, 97, 98}$ Rb and $^{94, 97 - 99}$ Sr have uncertainties of less than 4 keV and show deviations of up to 11 $σ$ 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.

3 More

Received 29 March 2012

DOI:https://doi.org/10.1103/PhysRevC.85.064308

Authors & Affiliations

V. V. Simon^1,2,3,*, T. Brunner^1,4, U. Chowdhury^1,5, B. Eberhardt¹, S. Ettenauer^1,6, A. T. Gallant^1,6, E. Mané¹, M. C. Simon¹, P. Delheij¹, M. R. Pearson¹, G. Audi⁷, G. Gwinner⁵, D. Lunney⁷, H. Schatz⁸, and J. Dilling^1,6

¹TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia, V6T 2A3, Canada
²Department of Physics and Astronomy, University of Heidelberg, Philosophenweg 12, 69120 Heidelberg, Germany
³Max Planck Institute for Nuclear Physics, Saupfercheckweg 1, 69117 Heidelberg, Germany
⁴Physik Department E12, Technische Universität München, 85748 Garching, Germany
⁵Department of Physics and Astronomy, University of Manitoba, Winnipeg, Manitoba, R3T 2N2, Canada
⁶Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia, V6T 1Z1, Canada
⁷CSNSM-IN2P3, Université de Paris Sud, Orsay, France
⁸National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA

^*Corresponding author: vsimon@triumf.ca

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand

Issue

Vol. 85, Iss. 6 — June 2012

Reuse & Permissions

Access Options

Article Available via CHORUS

Download Accepted Manuscript

Author publication services for translation and copyediting assistance advertisement

Physical Review C

covering nuclear physics

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

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, G. Gwinner, D. Lunney, H. Schatz, and J. Dilling

Phys. Rev. C 85, 064308 – Published 7 June 2012

Abstract

Authors & Affiliations

Article Text (Subscription Required)

References (Subscription Required)

Issue

Access Options

Physical Review C

covering nuclear physics

Penning-trap mass spectrometry of highly charged, neutron-rich Rb and Sr isotopes in the vicinity of A≈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, G. Gwinner, D. Lunney, H. Schatz, and J. Dilling

Phys. Rev. C 85, 064308 – Published 7 June 2012

Abstract

Authors & Affiliations

Article Text (Subscription Required)

References (Subscription Required)

Issue

Access Options

Authorization Required

Other Options

Download & Share

Images

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Log In

Search

Article Lookup

Paste a citation or DOI

Enter a citation

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