Title :
Monte Carlo analysis of a mercuric iodide neutron/gamma detector
Author :
Bell, Zane W. ; West, W. Geoffrey ; Pohl, Kenneth R. ; Van den Berg, Lodewijk
Author_Institution :
Nucl. Sci. & Technol. Div., Oak Ridge Nat. Lab., TN, USA
Abstract :
The response to neutrons of a 27×27×2.6 mm HgI2 detector covered on one face with a layer of boron was modeled with MCNP5 and MCNP-PoliMi. It was found that the detection of the 478 keV gamma ray from the 10B(n,α) and the 368 keV gamma ray from the 199Hg(n,α) could be used to estimate the average energy of incident neutrons and that these gamma rays could be used to distinguish between unmoderated radioactive and fission sources.
Keywords :
Monte Carlo methods; gamma-ray detection; neutron-nucleus reactions; radioactive sources; semiconductor counters; 10B(n, alpha); 199Hg(n, alpha); HgI2 detector; MCNP-PoliMi; MCNP5; Monte Carlo analysis; boron layer; fission sources; gamma ray detection; mercuric iodide gamma detector; mercuric iodide neutron detector; unmoderated radioactive source; Aluminum; Boron; Face detection; Gamma ray detection; Gamma ray detectors; Gamma rays; Monte Carlo methods; Neutrons; Polyethylene; Printed circuits; Mercuric iodide; Monte Carlo methods; neutron detectors;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.2005.856764
