Energy deposition study in the intensifying screens by numerical simulations

Pascal Franco; Frederic Julia

doi:10.1117/12.50547

1 January 1992 Energy deposition study in the intensifying screens by numerical simulations

Pascal Franco, Frederic Julia

Proceedings Volume 1539, Ultrahigh- and High-Speed Photography, Videography, and Photonics '91; (1992) https://doi.org/10.1117/12.50547
Event: San Diego, '91, 1991, San Diego, CA, United States

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.

Citation Download Citation

Pascal Franco and Frederic Julia "Energy deposition study in the intensifying screens by numerical simulations", Proc. SPIE 1539, Ultrahigh- and High-Speed Photography, Videography, and Photonics '91, (1 January 1992); https://doi.org/10.1117/12.50547

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