Author/Authors :
Viesti، نويسنده , , G. and Cossutta، نويسنده , , L. and Fabris، نويسنده , , D. and Lunardon، نويسنده , , M. and Moretto، نويسنده , , S. and Nebbia، نويسنده , , G. and Pesente، نويسنده , , S. and Pino-Villela، نويسنده , , F. and Sajo-Bohus، نويسنده , , L.، نويسنده ,
Abstract :
Material recognition by measuring simultaneously the transmission of neutron and gamma ray produced by a 252Cf 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 C/N) normally used to identify threat organic materials such as explosives and drugs.
Keywords :
Non-destructive assay , Neutron–gamma transmission , Neutron time-of-flight measurements , 252Cf fission source
