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DETERMINATION OF NEUTRON DETECTORS SHIELD USED FOR THE DETECTION OF LANDMINES | ||
| Iranian Journal of Science | ||
| مقاله 10، دوره 32، شماره 3، آذر 2008، صفحه 227-233 اصل مقاله (237.44 K) | ||
| نوع مقاله: Research Note | ||
| شناسه دیجیتال (DOI): 10.22099/ijsts.2008.2292 | ||
| نویسندگان | ||
| D. REZAEI OCHBELAGH* 1؛ H. MIRI HAKIMABAD2؛ R. IZADI NAJAFABADI2 | ||
| 1Department of Physics, University of Mohaghegh Ardabili, P.O. Box 179, Ardabil, I. R. of Iran | ||
| 2Physics Department, Faculty of Sciences, Ferdowsi University of Mashhad, Mashhad, I. R. of Iran | ||
| چکیده | ||
| As a result of being hydrogenous moderators, several landmine detection methods based on nuclear 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. | ||
| کلیدواژهها | ||
| MCNP؛ shielding؛ Detection؛ landmine؛ Am-Be؛ neutron backscattering؛ polyethylene؛ boric acid | ||
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