Prodn. appts. for noble gas cryogenic targets used to produce halogen radionuclides - has container with double walled frusto=conical form with refrigerant fed tangentially into double wall

摘要

Equipment for making noble gas cryogenic targets, for prodn. of halogen radionuclides by means of bremsstrahlung, consists of a container with a noble gas supply and refrigerant feed and discharge liner. The container has a double-walled frustoconical form, the refrigerent being fed tangentially into the double wall at the base of the frustum and being discharged tangentially at the top of the frustum. The container can be pivoted out of the horizontal position in the irradiation plane into a perpendicular position. The refrigerant is pref. liq. N2 or liq. He and is passed in a spiral flow through the double wall of the container (1). The space, not filled by the frustocone (2), is pref. filled with polystyrene foam (3). USE/ADVANTAGE - The halogen radionuclides are useful in nuclear medical and technical diagnostics. The equipment produces noble gas cryogenic targets in a compact vitreous state with high activity yield.