Prompt fission neutron emission: Problems and challenges F.-J. Hambsch, T. Bryś, T. Gamboni, W. Geerts, A. Göök, C. Matei, S. Oberstedt and M. Vidali EPJ Web of Conferences, 62 (2013) 02001 Published online: 13 December 2013 DOI: 10.1051/epjconf/20136202001