TY - JOUR ID - 2292 TI - DETERMINATION OF NEUTRON DETECTORS SHIELD USED FOR THE DETECTION OF LANDMINES JO - Iranian Journal of Science JA - ISTT LA - en SN - 2731-8095 AU - REZAEI OCHBELAGH, D. AU - MIRI HAKIMABAD, H. AU - IZADI NAJAFABADI, R. AD - Department of Physics, University of Mohaghegh Ardabili, P.O. Box 179, Ardabil, I. R. of Iran AD - Physics Department, Faculty of Sciences, Ferdowsi University of Mashhad, Mashhad, I. R. of Iran Y1 - 2008 PY - 2008 VL - 32 IS - 3 SP - 227 EP - 233 KW - MCNP KW - shielding KW - Detection KW - landmine KW - Am-Be KW - neutron backscattering KW - polyethylene KW - boric acid DO - 10.22099/ijsts.2008.2292 N2 - As a result of being hydrogenous moderators, several landmine detection methods based onnuclear techniques have been suggested in recent years. Because of elastic scattering and moderating neutrons from hydrogen atoms in landmines, detection of backscattered neutron shows an anomaly in the reflected thermal neutrons count when a detector scans over a mine. On landmine detection using neutron sources, a detector and its shielding play an important role. In this paper, based on the investigations and calculations performed by MCNP code (Monte Carlo N-Particle transport code), detector shielding materials and their thicknesses have been determined. Therefore, the effects of moderators such as graphite, heavy water, beryllium, polyethylene and boric acid on backscattered neutron flux have been investigated. UR - https://ijsts.shirazu.ac.ir/article_2292.html L1 - https://ijsts.shirazu.ac.ir/article_2292_b7436b2627122e4793c96a58afe9111d.pdf ER -