EXPERIMENTAL-STUDY OF A SOLID-DEUTERIUM SOURCE OF ULTRACOLD NEUTRONS

The results of experimental studies of the emergence of ultracold neut rons (UCN) from solid deuterium, which were performed on a model sourc e in the BBR-M reactor at the St. Petersburg Institute of Nuclear Phys ics, are reported. The temperature gain factor in the UCN yield at 13- 14 K from solid deuterium relative to to the UCN yield at room tempera ture from a gaseous state is equal to 1230 and 550 at solid-deuterium temperature of 18.7 K (triple point). (C) 1995 American Institute of P hysics.