MU Yanhong FU Pengtao ZHANG Jianhua YANG Chaowen. Simulations to neutron-induced gamma ray spectra of light nuclides in TNT[J]. Nuclear techniques, 2011, 34(6): 442-446.
MU Yanhong FU Pengtao ZHANG Jianhua YANG Chaowen. Simulations to neutron-induced gamma ray spectra of light nuclides in TNT[J]. Nuclear techniques, 2011, 34(6): 442-446.DOI:
There are several factors affecting the detection of explosive or landmine using neutron-induced reactions
such as the neutron source
detector
object and surroundings.In this paper
using a system of NaI(Tl) or BGO detectors and an Am-Be neutron source
prompt gamma ray spectra from nuclides in TNT of landmine in soil are simulated by MCNP.The counts of full energy characteristic peaks of gamma rays from hydrogen
carbon
nitrogen and oxygen in TNT are related to the explosive mass.Effects of the soil moisture on the gamma-ray spectrum are studied.The ratio of full energy peak counts from nitrogen to full energy peak counts from carbon is defined.A method to use the ratio to identify explosives under water environment is proposed.