Nondestructive Assay Techniques Research Articles

核燃料非破壊分析装置の現状

Recently non-destructive assay techniques for active and passive assay of nuclear fuels have been powerfully developed in the U.S.A., the EC and other countries as nuclear safeguard techniques and nuclear material management techniques in nuclear plants.The present paper will give some information on non-destructive assay techniques of nuclear fuels in different areas of the fuel cycle. And present status of instruments for these techniques is reviewed.

Authors

Authors

Physics of Nuclear Materials Safeguards Techniques

The active nondestructive assay techniques for nuclear materials have progressed. The basic physical principles underlining the two main techniques are based on photon interrogation and neutron interrogation. The basic features of the nuclear processes which pertain to the detection and determination of the nuclear materials are the interactions of neutrons and photons with the nuclear materials and with the non-nuclear matrix materials which usually accompany the former. Few ways to partially reduce the effect of the nonnuclear materials on the results of the assay are available. Further theoretical and experimental work is required.