Magneto-optical trapping of Stark-slowed metastable He atoms R. Jung, S. Gerlach, R. Schumann, G. von Oppen and U. Eichmann Eur. Phys. J. D, 23 3 (2003) 415-419 Published online: 29 April 2003 DOI: 10.1140/epjd/e2003-00089-5