Ground State Electromagnetic Moments of 37Ca

Klose, A.; Minamisono, K.; Miller, A. J.; Brown, B. A.; Garand, D.; Holt, J. D.; Lantis, J. D.; Liu, Y.; Maaß, B.; Nörtershäuser, W.; Pineda, S. V.; Rossi, D. M.; Schwenk, A.; Sommer, F.; Sumithrarachchi, C.; Teigelhöfer, A.; Watkins, J.

doi:10.1103/PhysRevC.99.061301

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学術論文

Ground State Electromagnetic Moments of ³⁷Ca

MPS-Authors

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Schwenk, A.
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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https://doi.org/10.1103/PhysRevC.99.061301
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1906.02298.pdf
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引用

Klose, A., Minamisono, K., Miller, A. J., Brown, B. A., Garand, D., Holt, J. D., Lantis, J. D., Liu, Y., Maaß, B., Nörtershäuser, W., Pineda, S. V., Rossi, D. M., Schwenk, A., Sommer, F., Sumithrarachchi, C., Teigelhöfer, A., & Watkins, J. (2019). Ground State Electromagnetic Moments of ³⁷Ca. Physical Review C, 99(6):. doi:10.1103/PhysRevC.99.061301.

引用: https://hdl.handle.net/21.11116/0000-0004-F1C1-1

要旨

The hyperfine coupling constants of neutron deficient $^{37}$Ca were deduced
from the atomic hyperfine spectrum of the $4s~^2S_{1/2}$ $\leftrightarrow$
$4p~^2P_{3/2}$ transition in Ca II, measured using the collinear laser
spectroscopy technique. The ground-state magnetic-dipole and spectroscopic
electric-quadrupole moments were determined for the first time as $\mu =
+0.7453(72) \mu_N$ and $Q = -15(11)$ $e^2$fm$^2$, 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 shown that the magnetic moment of $^{39}$Ca requires a
larger non-$sd$-shell component than that of $^{37}$Ca for good agreement with
the shell-model calculation, indicating a more robust closed sub-shell
structure of $^{36}$Ca at the neutron number $N$ = 16 than $^{40}$Ca. The
results are also compared to valence-space in-medium similarity renormalization
group calculations based on chiral two- and three-nucleon interactions.