title: Investigations on neutron-induced prompt gamma ray analysis of bulk samples.
abstract: A systematic investigation was carried out for the improvement of the prompt gamma interrogation method used for contraband detection by the pulsed fast/thermal neutron analysis (PFTNA) technique. Optimizations of source detector shielding and geometry, role of the type and dimension of the gamma detector, attenuation of neutrons and gamma rays in bulky samples were also studied. Results obtained for both the shielding materials and elemental content of cocaine simulants have been compared with the values calculated by the MCNP-4A code.
authors: Applied Physics Institute, Western Kentucky University, Bolling Green 42101, USA.
authors: P A
authors: PA
authors: Dokhale
authors: J
authors: J
authors: Csikai
authors: L
authors: L
authors: Oláh
mesh_terms: D003042:Cocaine / Q000032:analysis*; D005107:Explosions / Q000517:prevention & control; D005720:Gamma Rays; D013287:Illicit Drugs; D009501:Neutron Activation Analysis / Q000379:methods; D011835:Radiation Protection; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity
chemical_list: D013287:Illicit Drugs; D003042:Cocaine