Large-area high-resolution thermal neutron imaging detectors

Amos Breskin; Rachel Chechik; A. Gibrekhterman; A. Akkerman; Volker Dangendorf; Angela Brauning-Demian

doi:10.1117/12.204170

3 March 1995 Large-area high-resolution thermal neutron imaging detectors

Amos Breskin, Rachel Chechik, A. Gibrekhterman, A. Akkerman, Volker Dangendorf, Angela Brauning-Demian

Proceedings Volume 2339, International Conference on Neutrons and Their Applications; (1995) https://doi.org/10.1117/12.204170
Event: 4th International Conference on Applications of Nuclear Techniques: Neutrons and their Applications, 1994, Crete, Greece

Abstract

We have developed a high resolution thermal neutron imaging detector, combining a composite solid neutron convertor and a low-pressure gaseous avalanche electron multiplier. Neutron-induced charged particles from a primary convertor element induce multiple low- energy secondary electrons from a second electron-emissive film. These are multiplied in the gas upon their emission. A localization resolution of the order of 0.5 mm (FWHM) was measured with detectors equipped with Gd and Li convertors coated with thin CsI films. These detectors are characterized by good imaging properties (also in divergent neutron beams), fast time resolution, low sensitivity to gamma background, and the capability of operating at very high neutron flux. Possible applications are discussed.

Citation Download Citation

Amos Breskin, Rachel Chechik, A. Gibrekhterman, A. Akkerman, Volker Dangendorf, and Angela Brauning-Demian "Large-area high-resolution thermal neutron imaging detectors", Proc. SPIE 2339, International Conference on Neutrons and Their Applications, (3 March 1995); https://doi.org/10.1117/12.204170

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