Accurate determination of ground state hyperfine structures of some radioactive alkali isotopes by r. f. magnetic resonance and laser optical pumping
H.T. Duong, S. Liberman, J. Pinard, A. Coc, C. Thibault, F. Touchard, M. Carré, J. Lermé, J.L. Vialle, P. Juncar, S. Büttgenbach, A. Pesnelle et Isolde Collaboration