Internet Archive Scholar

Precision measurement of the electric quadrupole moment of 31Al and determination of the effective proton charge in the sd-shell

M. De Rydt, G. Neyens, K. Asahi, D.L. Balabanski, J.M. Daugas, M. Depuydt, L. Gaudefroy, S. Grévy, Y. Hasama, Y. Ichikawa, P. Morel, T. Nagatomo (+11 others)
2009 Physics Letters B  

Preserved Fulltext

fulltext thumbnail
Web Archive Capture PDF (523.3 kB)
https://web.archive.org/web/20170814082006/https://lirias.kuleuven.be/bitstream/123456789/257280/4/plb678-31al-qmoment.pdf

A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL. The file type is application/pdf.

Other Versions

2009 pre-print
arXiv:0906.4272v1 fatcat:lu4kvrgy4bhkzmqljwssve452e
he electric quadrupole coupling constant of the 31Al ground state is measured to be nu_Q = |eQV_zz/h| = 2196(21)kHz using two different beta-NMR (Nuclear Magnetic Resonance) techniques. For the first time, a direct comparison is made between the continuous rf technique and the adiabatic fast passage method. The obtained coupling constants of both methods are in excellent agreement with each other and a precise value for the quadrupole moment of 31Al has been deduced: |Q(31Al)| = 134.0(16) mb.
more » ... mparison of this value with large-scale shell-model calculations in the sd and sdpf valence spaces suggests that the 31Al ground state is dominated by normal sd-shell configurations with a possible small contribution of intruder states. The obtained value for |Q(31Al)| and a compilation of measured quadrupole moments of odd-Z even-N isotopes in comparison with shell-model calculations shows that the proton effective charge e_p=1.1 e provides a much better description of the nuclear properties in the sd-shell than the adopted value e_p=1.3 e.
doi:10.1016/j.physletb.2009.06.043 fatcat:gsdhncnuejcfvm7zr4rggyjzbq
DOAJ Multiple Versions
Citation

M. De Rydt, G. Neyens, K. Asahi, D.L. Balabanski, J.M. Daugas, M. Depuydt, L. Gaudefroy, S. Grévy, Y. Hasama, Y. Ichikawa, P. Morel, T. Nagatomo, T. Otsuka, L. Perrot, K. Shimada, C. Stödel, J.C. Thomas, H. Ueno, Y. Utsuno, W. Vanderheijden, N. Vermeulen, P. Vingerhoets, A. Yoshimi. "Precision measurement of the electric quadrupole moment of 31Al and determination of the effective proton charge in the sd-shell." Physics Letters B 678.4 (2009) 344-349