[3A01-03] Beam Application 1

10:00 AM - 10:15 AM JST(1:00 AM - 1:15 AM UTC)

[3A01] Verification of an analytical accuracy and precision of macroscopic distribution model representing areal density spatial distribution of nuclide using neutron resonance absorption spectroscopy

*Shin Sawada¹, Takashi Kamiyama¹ (1. Hokkaido Univ.)

Keywords:

Neutron resonance absorption,Neutron transmission spectrum,Powder measurement,Particle size distribution,Particle transport simulation calculation

Powder measurement using neutron resonance absorption spectroscopy is expected to measure properties such as grain shape and size distribution to depth for each nuclide. A Previous study by Becker et al., using macroscopic distribution model with averaged parameters of blank fraction, areal density and its standard deviation through neutron transmission path, quantified areal density with almost 2% accuracy. We plan to expand the model to the one representing powder morphology for characterization of powders. For purpose, we verified analytic accuracy and precision of conventional parameters to evaluate underlying performance of original model. For verification, transmission spectra were calculated with PHITS code by reproducing conditions assumed in the model. We evaluated consistency between simulated result and calculated model with least-squares fitting.