Low-energy neutron flux measurement using a resonance absorption filter surrounding a lithium glass scintillator

摘要

The resonance absorption filter technique has been used to determine the thermal/epithermal neutron flux.The main idea in this technique is to use an element with a high and essentially singular resonance in the neutron absorption cross section as a filter surrounding a miniature-type lithium glass scintillator.The count with and without the filter surrounding the detector gives the number of resonance-energy neutrons.Some preliminary results and a comparison with the MCNP code are shown.