Hyperfine splitting and isotope shift in the atomic D2 line of 22,23Na and the quadrupole moment of 22Na Yu.P. Gangrsky, D.V. Karaivanov, K.P. Marinova, B.N. Markov, L.M. Melnikova, G.V. Mishinsky, S.G. Zemlyanoi and V.I. Zhemenik Eur. Phys. J. A, 3 4 (1998) 313-318 Published online: 15 December 1998 DOI: 10.1007/s100500050185