Introduction of the Neutron Activation Analysis Facilities in High Flux Engineering Test Reactor

摘要

Neutron activation is used for minimum element analysis widely in agriculture, biological medicine, geology and metallurgy. Based on High Flux Engineering Test Reactor, the "rabbit" facilities and neutron activation analysis system for the minimum impurity analysis of silicon doping and production of short-life isotopes were developed by Nuclear Power Institute of China (NPIC). They include "rabbit" irradiation rig and supporter in reactor vessel; sample entry and distributor; active gas purifier; sample stripped and storage; pneumatic transportation and γ spectrum analysis system. Each inner dimension of three irradiation boxes is 15mm in diameter and 30mm in length; the speed of pneumatic transportation is at ≤15mm/sec. Thermal neutron (E<0.625ev) flux of the "rabbit" channel is at (0.6～1.4)X10~(14)n/cm~2. sec. The "rabbit" facilities are applied to analysis of minimum elements (such as Ag Se Cr Sn Sb Fe Zn Co) for silicon doping. Production of short-life isotopes and other application are developing.