Saint-gobain Cristaux Et Detecteurs

Saint-gobain Cristaux & Détecteurs

Guillaume Gautier

Dominique Richaud

Patrick Champeaux

Jérémy Flamanc

Philippe Derouineau

A single-crystal scintillator material can include at least 50 wt % of rare-earth halide and comprising a polished first face. This material is integrated into an ionizing-radiation detector comprising a photoreceiver, the photoreceiver being optically coupled to the material via a face other than the polished first face. The material provides a good energy resolution and a high light intensity. The polishing may be carried out whatever the crystal orientation of the crystal. Loss of material due to this orientation is therefore prevented.

Rare-earth halide crystal scintillator with polished sensitive face

The invention relates to a crystalline lithium fluoride doped with at least 0.018 mol per kg of a divalent positive ion M present in the fluoride state, in particular of the single-crystal type. The ion may be Mg, Znor Co. This fluoride has a high reflectivity and intense radiation that can emanate therefrom may be effectively received by a fast light scintillator, especially of the rare-earth halide type. It is particularly useful as a monochromator for X-ray fluorescence radiation for the purpose of elemental analysis.

Doped lithium fluoride monochromator for X-ray analysis

An ionizing radiation detector comprising a housing includes a scintillator material, an avalanche photodiode in contact with the scintillator material via optical coupling, and a preamplifier.

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Mennecy, France

Guillaume Gautier