Ground-state electromagnetic moments of
Abstract
The hyperfine coupling constants of neutron deficient 37Ca were deduced from the atomic hyperfine spectrum of the 4s 2S1/2 ↔ 4p 2P3/2 transition in Ca II, measured using the collinear laser spectroscopy technique. The ground-state magnetic-dipole and spectroscopic electric-quadrupole moments were observed for the first time as μ=+0.7453(72)μN and Q = -15(11) e2fm2, respectively. The experimental values agree well with nuclear shell-model calculations using the universal sd model-space Hamiltonians versions A and B (USDA/B) in the sd-model space with a 95% probability of the canonical nucleon configuration. It is demonstrated that the magnetic moment of 39Ca requires a larger non-sd-shell component than that of 37Ca for good agreement with the shell-model calculation, suggests a more robust closed subshell structure of 36Ca at the neutron number N =16 than 40Ca. The results are also compared to valence-space in-medium similarity renormalization group calculations based on chiral two- and three-nucleon interactions.
- Authors:
-
[4];
- Augustana College, Sioux Falls, SD (United States)
- Michigan State Univ., East Lansing, MI (United States)
- TRIUMF, Vancouver, BC (Canada)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Technische Univ. Darmstadt (Germany). Inst. fur Kernphysik
- Technische Univ. Darmstadt (Germany). Inst. fur Kernphysik; GSI-Helmholtzzentrum fur Schwerionenforschung, Darmstadt (Germany); Max Planck Inst. fur Kernphysik, Heidelberg (Germany)
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA); USDOE Office of Nuclear Energy (NE); German Research Foundation (DFG); National Science Foundation (NSF)
- OSTI Identifier:
- 1558520
- Alternate Identifier(s):
- OSTI ID: 1546302
- Grant/Contract Number:
- AC05-00OR22725; NA0002924; PHY-15-65546; PHY-18-11855
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review C
- Additional Journal Information:
- Journal Volume: 99; Journal Issue: 6; 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
Klose, Andrew, Minamisono, Kei, Miller, Andrew J., Brown, B. A., Garand, David, Holt, J. D., Lantis, J. D., Liu, Yuan, Maaß, B., Nörtershäuser, W., Pineda, S. V., Rossi, D. M., Schwenk, A., Sommer, F., Sumithrarachchi, C., Teigelhöfer, A., and Watkins, J. Ground-state electromagnetic moments of Ca37. United States: N. p., 2019.
Web. doi:10.1103/PhysRevC.99.061301.
Klose, Andrew, Minamisono, Kei, Miller, Andrew J., Brown, B. A., Garand, David, Holt, J. D., Lantis, J. D., Liu, Yuan, Maaß, B., Nörtershäuser, W., Pineda, S. V., Rossi, D. M., Schwenk, A., Sommer, F., Sumithrarachchi, C., Teigelhöfer, A., & Watkins, J. Ground-state electromagnetic moments of Ca37. United States. https://doi.org/10.1103/PhysRevC.99.061301
Klose, Andrew, Minamisono, Kei, Miller, Andrew J., Brown, B. A., Garand, David, Holt, J. D., Lantis, J. D., Liu, Yuan, Maaß, B., Nörtershäuser, W., Pineda, S. V., Rossi, D. M., Schwenk, A., Sommer, F., Sumithrarachchi, C., Teigelhöfer, A., and Watkins, J. Fri .
"Ground-state electromagnetic moments of Ca37". United States. https://doi.org/10.1103/PhysRevC.99.061301. https://www.osti.gov/servlets/purl/1558520.
@article{osti_1558520,
title = {Ground-state electromagnetic moments of Ca37},
author = {Klose, Andrew and Minamisono, Kei and Miller, Andrew J. and Brown, B. A. and Garand, David and Holt, J. D. and Lantis, J. D. and Liu, Yuan and Maaß, B. and Nörtershäuser, W. and Pineda, S. V. and Rossi, D. M. and Schwenk, A. and Sommer, F. and Sumithrarachchi, C. and Teigelhöfer, A. and Watkins, J.},
abstractNote = {The hyperfine coupling constants of neutron deficient 37Ca were deduced from the atomic hyperfine spectrum of the 4s 2S1/2 ↔ 4p 2P3/2 transition in Ca II, measured using the collinear laser spectroscopy technique. The ground-state magnetic-dipole and spectroscopic electric-quadrupole moments were observed for the first time as μ=+0.7453(72)μN and Q = -15(11) e2fm2, respectively. The experimental values agree well with nuclear shell-model calculations using the universal sd model-space Hamiltonians versions A and B (USDA/B) in the sd-model space with a 95% probability of the canonical nucleon configuration. It is demonstrated that the magnetic moment of 39Ca requires a larger non-sd-shell component than that of 37Ca for good agreement with the shell-model calculation, suggests a more robust closed subshell structure of 36Ca at the neutron number N =16 than 40Ca. The results are also compared to valence-space in-medium similarity renormalization group calculations based on chiral two- and three-nucleon interactions.},
doi = {10.1103/PhysRevC.99.061301},
journal = {Physical Review C},
number = 6,
volume = 99,
place = {United States},
year = {2019},
month = {6}
}
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