COLD NEUTRON STORAGE BY PERFECT CRYSTALS

A double crystal cold neutron storage apparatus has been installed at the ISIS spallation source. Experiments with an improved set-up are re ported and discussed with respect to possible applications. Intrinsic loss factors of a given configuration results in the decrease of the s tored neutron intensity at increasing storage periods. Neutron interac tion with its environment leads to additional losses which can be eval uated after the storage process.