Experimental study of vapor-cell magneto-optical traps for efficient trapping of radioactive atoms S. N. Atutov, R. Calabrese, A. Facchini, G. Stancari and L. Tomassetti Eur. Phys. J. D, 53 1 (2009) 89-96 Published online: 18 February 2009 DOI: 10.1140/epjd/e2009-00060-6