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Proceedings Paper

High quantum-detection efficiency and low-cost metal/plastic fibers 2D imager for MeV radiography
Author(s): Jean-Louis Gerstenmayer; Maurice Jurion; Pierre Nicolas; Didier Nore; Damien Lebrun; Claude Hennion
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Paper Abstract

We have tested a new concept of segmented scintillating block in order to realize a low cost fast 2D integrating imager for hard x-ray radiography and for neutron radiography. COntrary to other scintillating camera for high energy imaging, our scintillating materials is not made up of heavy crystal; it is composed of less expensive scintillating plastic fibers. However, in order to insure a higher detection quantum efficiency, these fibers are surrounded by a lead x-ray electron converter (lead coating). This hybrid scintillating block is then adjusted upon a microchannel plate image intensifier. We present experimental results about the performances of this kind of scintillating device as a hard x-ray imager. We can notice that the detection quantum efficiency is very high, and simultaneously the spatial resolution is preserved by this kind of pixellization. We have demonstrated that such a hybrid scintillating set-up is already interesting in order to constitute a NeV radiography detector. It reaches the quantum limit of detection and can also provide images at high dose rate. On the same principle, with a light metal replacing the lead it is possible to make an efficient fast neutron imaging device.

Paper Details

Date Published: 19 July 1996
PDF: 6 pages
Proc. SPIE 2859, Hard X-Ray/Gamma-Ray and Neutron Optics, Sensors, and Applications, (19 July 1996); doi: 10.1117/12.245148
Show Author Affiliations
Jean-Louis Gerstenmayer, CEA (France)
Maurice Jurion, CEA (France)
Pierre Nicolas, CEA (France)
Didier Nore, CEA (France)
Damien Lebrun, ESPCI (France)
Claude Hennion, ESPCI (France)

Published in SPIE Proceedings Vol. 2859:
Hard X-Ray/Gamma-Ray and Neutron Optics, Sensors, and Applications
Richard B. Hoover; F. Patrick Doty, Editor(s)

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