Efficiency of neutron detection of superheated drops of Freon-22

摘要

Neutron detection efficiency of superheated drops of Freon-22 for neutrons obtained from a 3 Curie Am-Be neutron source has been reported in this paper. Although Freon-22 having lower boiling point than many other similar liquids (e.g., Freon-12, Freon-114, Isobutane) is expected to be more sensitive to neutrons, it has not been reported so far and therefore this paper constitutes the first report on the subject. Neutron detection efficiency of both Freon-22 and Freon-12 have been determined from the measured nucleation rate using the volumetric method developed in our laboratory. The result shows that the neutron detection efficiency of Freon-22 for the neutron energy spectrum obtained from an Am-Be source, is almost double, while the life time is 58.6% smaller than that of Freon-12, for a particular neutron flux of that source. (C) 1999 Elsevier Science Ltd. All rights reserved. [References: 17]