Measurement of Neutron Flux Density in Reactor with Thermal Analysis Method

One new neutron flux density detector was studied. Its principle was to measure annealing heat from mineral depositional energy to make sure neutron flux density. The new neutron detector was calibrated, the measuring neutron flux density of certain location in reactor was 5.108×10¹¹ cm^-2•s^-1, and the measuring value and calibrated neutron flux density (5.000×10¹¹ cm^-2•s^-1) were coincidence in the 2%. The results show that the new neutron detector can use to measure neutron flux density. This neutron detector has the advantages of small volume possession in nuclear reactor with required shape, and simplified multi-point measurement. The detector can measure different energy neutron flux densities if select element is sensitive for corresponding energy neutron.