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Proceedings Paper

Energy deposition study in the intensifying screens by numerical simulations
Author(s): Pascal Franco; Frederic Julia
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Paper Abstract

The detection of low X fluences up to 10 MeV requires increasing the capabilities of the radiographic reception. The efficiency determination of a calcium tungstate screen film pair implies the energy deposition knowledge. For this purpose, a collaboration with the Atomic Physics Center of Toulouse has begun in order to improve the efficiency owing to a parametric study of the energy deposition in the calcium tungstate by means of a Monte Carlo type code of the interaction of ionizing radiation with matter. For the interpretation of the data, software on a VAX 11/780 has been created. The following results, given for 3.8 MeV photons (equivalent energy for the GREC generator), are outlined: (1) a significant increase of the energy deposition in the intensifying screen when this one has a metal screen (Pb; W) in front of it; (2) for the tungsten metal screen, it exits a boundary thickness beyond which the energy deposition does not increase. Moreover, the radial energy deposition leads to the energy spread and the resolution study.

Paper Details

Date Published: 1 January 1992
PDF: 8 pages
Proc. SPIE 1539, Ultrahigh- and High-Speed Photography, Videography, and Photonics '91, (1 January 1992); doi: 10.1117/12.50547
Show Author Affiliations
Pascal Franco, Commissariat a l'Energie Atomique (France)
Frederic Julia, Commissariat a l'Energie Atomique (France)

Published in SPIE Proceedings Vol. 1539:
Ultrahigh- and High-Speed Photography, Videography, and Photonics '91
Paul A. Jaanimagi, Editor(s)

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