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Title: Precision mass measurements of magnesium isotopes and implications for the validity of the isobaric mass multiplet equation

Abstract

If the mass excess of neutron-deficient nuclei and their neutron-rich mirror partners are both known, it can be shown that deviations of the isobaric mass multiplet equation (IMME) in the form of a cubic term can be probed. Such a cubic term was probed by using the atomic mass of neutron-rich magnesium isotopes measured using the TITAN Penning trap and the recently measured proton-separation energies of 29Cl and 30Ar. The atomic mass of 27Mg was found to be within 1.6σ of the value stated in the Atomic Mass Evaluation. The atomic masses of 28,29Mg were measured to be both within 1σ, while being 7 and 33 times more precise, respectively. Using the 29Mg mass excess and previous measurements of 29Cl, we uncovered a cubic coefficient of d = 28(7)keV, which is the largest known cubic coefficient of the IMME. This departure, however, could also be caused by experimental data with unknown systematic errors. Hence there is a need to confirm the mass excess of 28S and the one-neutron separation energy of 29Cl, which have both come from a single measurement. Lastly, our results were compared with ab initio calculations from the valence-space in-medium similarity renormalization group, resulting in a goodmore » agreement.« less

Authors:
 [1];  [2];  [3];  [4];  [1];  [5];  [6];  [7];  [8];  [9];  [8];  [8];  [10];  [11];  [12];  [13];  [14];  [8];  [8];  [8] more »;  [11];  [15];  [15];  [16] « less
  1. Univ. of Notre Dame, Notre Dame, IN (United States)
  2. TRIUMF, Vancouver, BC (Canada); Texas A & M Univ., College Station, TX (United States)
  3. TRIUMF, Vancouver, BC (Canada); Univ. Heidelberg, Philosophenweg (Germany)
  4. Simon Fraser Univ., Burnaby, BC (Canada)
  5. TRIUMF, Vancouver, BC (Canada); Canadian Nuclear Labs., Chalk River, ON (Canada)
  6. TRIUMF, Vancouver, BC (Canada); SNOLAB, Lively, ON (Canada); Univ. of Manitoba, Winnipeg, MB (Canada)
  7. TRIUMF, Vancouver, BC (Canada); Univ. of British Columbia, Vancouver, BC (Canada); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  8. TRIUMF, Vancouver, BC (Canada)
  9. Univ. of Manitoba, Winnipeg, MB (Canada)
  10. TRIUMF, Vancouver, BC (Canada); Max-Planck-Institut fur Kernphysik, Heidelberg (Germany)
  11. TRIUMF, Vancouver, BC (Canada); Univ. of Manitoba, Winnipeg, MB (Canada)
  12. TRIUMF, Vancouver, BC (Canada); Simon Fraser Univ., Burnaby, BC (Canada); Colorado School of Mines, Golden, CO (United States)
  13. TRIUMF, Vancouver, BC (Canada); Westfalische Wilhelms-Univ., Munster (Germany)
  14. Univ. of Notre Dame, Notre Dame, IN (United States); Wellesley College, Wellesley, MA (United States)
  15. Univ. of Calgary, Alberta (Canada)
  16. TRIUMF, Vancouver, BC (Canada); Univ. of British Columbia, Vancouver, BC (Canada)
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1399722
Alternate Identifier(s):
OSTI ID: 1392163
Report Number(s):
LLNL-JRNL-734384
Journal ID: ISSN 2469-9985; PRVCAN; TRN: US1703213
Grant/Contract Number:  
AC52-07NA27344
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 96; Journal Issue: 3; Journal ID: ISSN 2469-9985
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

Brodeur, M., Kwiatkowski, A. A., Drozdowski, O. M., Andreoiu, C., Burdette, D., Chaudhuri, A., Chowdhury, U., Gallant, A. T., Grossheim, A., Gwinner, G., Heggen, H., Holt, J. D., Klawitter, R., Lassen, J., Leach, K. G., Lennarz, A., Nicoloff, C., Raeder, S., Schultz, B. E., Stroberg, S. R., Teigelhöfer, A., Thompson, R., Wieser, M., and Dilling, J. Precision mass measurements of magnesium isotopes and implications for the validity of the isobaric mass multiplet equation. United States: N. p., 2017. Web. doi:10.1103/PhysRevC.96.034316.
Brodeur, M., Kwiatkowski, A. A., Drozdowski, O. M., Andreoiu, C., Burdette, D., Chaudhuri, A., Chowdhury, U., Gallant, A. T., Grossheim, A., Gwinner, G., Heggen, H., Holt, J. D., Klawitter, R., Lassen, J., Leach, K. G., Lennarz, A., Nicoloff, C., Raeder, S., Schultz, B. E., Stroberg, S. R., Teigelhöfer, A., Thompson, R., Wieser, M., & Dilling, J. Precision mass measurements of magnesium isotopes and implications for the validity of the isobaric mass multiplet equation. United States. doi:10.1103/PhysRevC.96.034316.
Brodeur, M., Kwiatkowski, A. A., Drozdowski, O. M., Andreoiu, C., Burdette, D., Chaudhuri, A., Chowdhury, U., Gallant, A. T., Grossheim, A., Gwinner, G., Heggen, H., Holt, J. D., Klawitter, R., Lassen, J., Leach, K. G., Lennarz, A., Nicoloff, C., Raeder, S., Schultz, B. E., Stroberg, S. R., Teigelhöfer, A., Thompson, R., Wieser, M., and Dilling, J. Mon . "Precision mass measurements of magnesium isotopes and implications for the validity of the isobaric mass multiplet equation". United States. doi:10.1103/PhysRevC.96.034316. https://www.osti.gov/servlets/purl/1399722.
@article{osti_1399722,
title = {Precision mass measurements of magnesium isotopes and implications for the validity of the isobaric mass multiplet equation},
author = {Brodeur, M. and Kwiatkowski, A. A. and Drozdowski, O. M. and Andreoiu, C. and Burdette, D. and Chaudhuri, A. and Chowdhury, U. and Gallant, A. T. and Grossheim, A. and Gwinner, G. and Heggen, H. and Holt, J. D. and Klawitter, R. and Lassen, J. and Leach, K. G. and Lennarz, A. and Nicoloff, C. and Raeder, S. and Schultz, B. E. and Stroberg, S. R. and Teigelhöfer, A. and Thompson, R. and Wieser, M. and Dilling, J.},
abstractNote = {If the mass excess of neutron-deficient nuclei and their neutron-rich mirror partners are both known, it can be shown that deviations of the isobaric mass multiplet equation (IMME) in the form of a cubic term can be probed. Such a cubic term was probed by using the atomic mass of neutron-rich magnesium isotopes measured using the TITAN Penning trap and the recently measured proton-separation energies of 29Cl and 30Ar. The atomic mass of 27Mg was found to be within 1.6σ of the value stated in the Atomic Mass Evaluation. The atomic masses of 28,29Mg were measured to be both within 1σ, while being 7 and 33 times more precise, respectively. Using the 29Mg mass excess and previous measurements of 29Cl, we uncovered a cubic coefficient of d = 28(7)keV, which is the largest known cubic coefficient of the IMME. This departure, however, could also be caused by experimental data with unknown systematic errors. Hence there is a need to confirm the mass excess of 28S and the one-neutron separation energy of 29Cl, which have both come from a single measurement. Lastly, our results were compared with ab initio calculations from the valence-space in-medium similarity renormalization group, resulting in a good agreement.},
doi = {10.1103/PhysRevC.96.034316},
journal = {Physical Review C},
number = 3,
volume = 96,
place = {United States},
year = {2017},
month = {9}
}

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