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Gangrskij, Yu.P.; Karajvanov, D.V.; Markov, B.N.; Mel'nikova, L.M.; Myshinskij, G.V.; Zemlyanoj, S.G.; Zhemenik, V.I.; Marinova, K.P.
Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research, Dubna (Russian Federation)1998
Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research, Dubna (Russian Federation)1998
AbstractAbstract
[en] The hyperfine structure of D2 optical line in 22Na and 23Na has been investigated using high resolution laser spectroscopy of a well-collimated atomic beam. The hyperfine splitting constants A and B for the excited 3p2P3/2 level for both investigated sodium isotopes have been obtained. They are as follows: A(22)=7.31(4) MHz, B(22)=4.71(28) MHz, A(23)=18.572(24) MHz, B(23)=2.723(55) MHz. With these data, using the high precision MCHFF calculations for the electric field gradient at the nucleus, the electric quadrupole moment of 22Na has been deduced: Qs(22)=+0.185(11) b. The sign of Qs(22), determined for the first time, indicates a prolate nuclear deformation. Precise value of the isotope shift 22,23Na in D2-line has also been obtained
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1998; 16 p; 33 refs., 4 figs., 3 tabs. Submitted to European Physical Journal A
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