Material recognition by measuring simultaneously the transmission of neutron and gamma ray produced by a Cf-252 source has been studied, determining the average atomic number resolving power. In addition, it is demonstrated the possibility to derive direct signatures able to identify light elements (C, N, O) using the measured transmission versus neutron time-of-flight. This allows one to determine the relevant elemental ratios (C/O and QN) normally used to identify threat organic materials such as explosives and drugs.
Material recognition by using a tagged Cf-252 source
VIESTI, GIUSEPPE;LUNARDON, MARCELLO;MORETTO, SANDRA;
2008
Abstract
Material recognition by measuring simultaneously the transmission of neutron and gamma ray produced by a Cf-252 source has been studied, determining the average atomic number resolving power. In addition, it is demonstrated the possibility to derive direct signatures able to identify light elements (C, N, O) using the measured transmission versus neutron time-of-flight. This allows one to determine the relevant elemental ratios (C/O and QN) normally used to identify threat organic materials such as explosives and drugs.
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