Neutron velocity distribution from a superthermal solid 2H2 ultracold neutron source I. Altarev, M. Daum, A. Frei, E. Gutsmiedl, G. Hampel, F. J. Hartmann, W. Heil, A. Knecht, J. V. Kratz, T. Lauer et al. (6 more) Eur. Phys. J. A, 37 1 (2008) 9-14 Published online: 07 July 2008 DOI: 10.1140/epja/i2008-10604-8