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Mass measurements of neutron-rich Rb and Sr isotopes

Publication ,  Journal Article
Klawitter, R; Bader, A; Brodeur, M; Chowdhury, U; Chaudhuri, A; Fallis, J; Gallant, AT; Grossheim, A; Kwiatkowski, AA; Lascar, D; Leach, KG ...
Published in: Physical Review C
April 14, 2016

We report on the mass measurements of several neutron-rich Rb and Sr isotopes in the A≈100 region with the TITAN Penning-trap mass spectrometer. By using highly charged ions in the charge state q=10+, the masses of Rb98,99 and Sr98-100 have been determined with a precision of 6-12 keV, making their uncertainty negligible for r-process nucleosynthesis network calculations. The mass of Sr101 has been determined directly for the first time with a precision eight times higher than the previous indirect measurement and a deviation of 3σ when compared to the Atomic Mass Evaluation. We also confirm the mass of Rb100 from a previous measurement. Furthermore, our data indicate the existence of a low-lying isomer with 80keV excitation energy in Rb98. We show that our updated mass values lead to minor changes in the r process by calculating fractional abundances in the A≈100 region of the nuclear chart.

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Published In

Physical Review C

DOI

EISSN

2469-9993

ISSN

2469-9985

Publication Date

April 14, 2016

Volume

93

Issue

4

Related Subject Headings

  • 5106 Nuclear and plasma physics
 

Citation

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Klawitter, R., Bader, A., Brodeur, M., Chowdhury, U., Chaudhuri, A., Fallis, J., … Dilling, J. (2016). Mass measurements of neutron-rich Rb and Sr isotopes. Physical Review C, 93(4). https://doi.org/10.1103/PhysRevC.93.045807
Klawitter, R., A. Bader, M. Brodeur, U. Chowdhury, A. Chaudhuri, J. Fallis, A. T. Gallant, et al. “Mass measurements of neutron-rich Rb and Sr isotopes.” Physical Review C 93, no. 4 (April 14, 2016). https://doi.org/10.1103/PhysRevC.93.045807.
Klawitter R, Bader A, Brodeur M, Chowdhury U, Chaudhuri A, Fallis J, et al. Mass measurements of neutron-rich Rb and Sr isotopes. Physical Review C. 2016 Apr 14;93(4).
Klawitter, R., et al. “Mass measurements of neutron-rich Rb and Sr isotopes.” Physical Review C, vol. 93, no. 4, Apr. 2016. Scopus, doi:10.1103/PhysRevC.93.045807.
Klawitter R, Bader A, Brodeur M, Chowdhury U, Chaudhuri A, Fallis J, Gallant AT, Grossheim A, Kwiatkowski AA, Lascar D, Leach KG, Lennarz A, Macdonald TD, Pearkes J, Seeraji S, Simon MC, Simon VV, Schultz BE, Dilling J. Mass measurements of neutron-rich Rb and Sr isotopes. Physical Review C. 2016 Apr 14;93(4).

Published In

Physical Review C

DOI

EISSN

2469-9993

ISSN

2469-9985

Publication Date

April 14, 2016

Volume

93

Issue

4

Related Subject Headings

  • 5106 Nuclear and plasma physics