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Proceedings Paper

Fast and thermal neutron radiography
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Paper Abstract

There is a need for high brightness neutron sources that are portable, relatively inexpensive, and capable of neutron radiography in short imaging times. Fast and thermal neutron radiography is as an excellent method to penetrate high-density, high-Z objects, thick objects and image its interior contents, especially hydrogen-based materials. In this paper we model the expected imaging performance characteristics and limitations of fast and thermal radiography systems employing a Rose Model based transfer analysis. For fast neutron detection plastic fiber array scintllators or liquid scintillator filled capillary arrays are employed for fast neutron detection, and 6Li doped ZnS(Cu) phosphors are employed for thermal neutron detection. These simulations can provide guidance in the design, construction, and testing of neutron imaging systems. In particular we determined for a range of slab thickness, the range of thicknesses of embedded cracks (air-filled or filled with material such as water) which can be detected and imaged.

Paper Details

Date Published: 21 September 2005
PDF: 19 pages
Proc. SPIE 5923, Penetrating Radiation Systems and Applications VII, 59230A (21 September 2005); doi: 10.1117/12.624972
Show Author Affiliations
Jay Theodore Cremer, Adelphi Technology, Inc. (United States)
Melvin A. Piestrup, Adelphi Technology, Inc. (United States)
Xizeng Wu, Univ. of Alabama at Birmingham (United States)

Published in SPIE Proceedings Vol. 5923:
Penetrating Radiation Systems and Applications VII
F. Patrick Doty; H. Bradford Barber; Hans Roehrig, Editor(s)

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