Quadrupole Moments of Neutron-Deficient $^{20, 21}$Na

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dc.creatorMinamisono, K.
dc.creatorMatsuta, K.
dc.creatorMinamisono, T.
dc.creatorLevy, C. D. P.
dc.creatorNagatomo, T.
dc.creatorOgura, M.
dc.creatorSumikama, T.
dc.creatorBehr, J. A.
dc.creatorJackson, K. P.
dc.creatorMihara, M.
dc.creatorFukuda, M.
dc.date2009-01-08
dc.date.accessioned2026-07-07T13:02:18Z
dc.date.available2026-07-07T13:02:18Z
dc.descriptionThe electric-quadrupole coupling constant of the ground states of the proton drip line nucleus $^{20}$Na($I^π$ = 2$^{+}$, $T_{1/2}$ = 447.9 ms) and the neutron-deficient nucleus $^{21}$Na($I^π$ = 3/2$^{+}$, $T_{1/2}$ = 22.49 s) in a hexagonal ZnO single crystal were precisely measured to be $|eqQ/h| = 690 \pm 12$ kHz and 939 $\pm$ 14 kHz, respectively, using the multi-frequency $β$-ray detecting nuclear magnetic resonance technique under presence of an electric-quadrupole interaction. A electric-quadrupole coupling constant of $^{27}$Na in the ZnO crystal was also measured to be $|eqQ/h| = 48.4 \pm 3.8$ kHz. The electric-quadrupole moments were extracted as $|Q(^{20}$Na)$|$ = 10.3 $\pm$ 0.8 $e$ fm$^2$ and $|Q(^{21}$Na)$|$ = 14.0 $\pm$ 1.1 $e$ fm$^2$, using the electric-coupling constant of $^{27}$Na and the known quadrupole moment of this nucleus as references. The present results are well explained by shell-model calculations in the full $sd$-shell model space.
dc.descriptionAccepted for publication in Physics Letters B
dc.identifierhttps://arxiv.org/abs/0901.1059
dc.identifierhttp://arxiv.org/abs/0901.1059
dc.identifierPhys.Lett.B672:120-125,2009
dc.identifierdoi:10.1016/j.physletb.2009.01.006
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/226403
dc.subjectNuclear Experiment
dc.titleQuadrupole Moments of Neutron-Deficient $^{20, 21}$Na
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