Thick Target Yields from the (d,n) Reaction at 10 Mev

The neutron yield from thick targets of Be, B, C, Al, Ni, Cu, Mo, Ta, W, Pt, and Au, bombarded with 10-Mev deuterons, has been determined by comparing the managanese activity (MnS${\mathrm{O}}_4$ in solution, in a large tank) after bombardment, with the activity produced by a standard Ra-Be source placed at the same position as the target. Some less reliable data on P, Mn, and Sb, obtained by a different method, are included.