Measuring the density of different materials by using the fast neutron beam and associated alpha particle technique

Sudac, Davorin; Nađ, Karlo; Orlić, Željko; Obhođaš, Jasmina; Valković, Vladivoj (2016) Measuring the density of different materials by using the fast neutron beam and associated alpha particle technique. IEEE Transaction on Nuclear Science, 63 (3). pp. 1531-1535. ISSN 0018-9499

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Abstract

It was demonstrated in the previous work that various threat materials could be detected inside the sea going cargo container by measuring the three variables, carbon and oxygen concentration and density of investigated material. Density was determined by measuring transmitted neutrons, which is not always practical in terms of setting up the instrument geometry. In order to enable more geometry flexibility, we have investigated the possibility of using the scattered neutrons in cargo material identification. For that purpose, the densities of different materials were measured depending on the position of neutron detectors and neutron generator with respect to the target position. One neutron detector was put above the target, one behind and one in front of the target, above the neutron generator. It was shown that all three positions of neutron detectors can be successfully used to measure the target density, but only if the detected neutrons are successfully discriminated from the gamma rays.

Item Type:	Article
Additional Information:	© © 2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Uncontrolled Keywords:	Domestic safety, neutrons, nuclear imaging
Subjects:	NATURAL SCIENCES > Physics
Divisions:	Division of Experimental Physics
Depositing User:	Kristina Ciglar
Date Deposited:	02 Nov 2016 13:35
URI:	http://fulir.irb.hr/id/eprint/3095
DOI:	10.1109/TNS.2016.2521901

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