Measurement of Reflect Neutron for ~(252)Cf in Cement Cylinder by Method of ~(235)U Fission(In Chinese)

The experiment theory of Research of neutron reflected coefficient for ~~(252)Cf in cement reflector was introduced.The fission rate of ~~(235)U with reflector, without reflector and with background was measured.The neutron reflected coefficient with cement reflector was concluded from fission rate and the reflec- ted coefficient for different neutron source in the same experiment model was compared.The relation of reflected coefficient with angle was analyzed.The technology of solid track was researched and the best etch condition was ex- plored.The trend of discharge count with code's thickness and etch thickness was gained.Efficiency for spark auto counters was measured and the technolo- gy of solid track was developed.

Ҳали таржима қилинмаган