Measurement of the electric quadrupole moments of 26–29Na M. Keim, U. Georg, A. Klein, R. Neugart, M. Neuroth, S. Wilbert, P. Lievens, L. Vermeeren, B. A. Brown and ISOLDE Collaboration Eur. Phys. J. A, 8 1 (2000) 31-40 Published online: 15 May 2000 DOI: 10.1007/s100500070117