Development of the new generation of glass-based neutron detection materials

Alexey E. Dosovitskiy; Georgy A. Dosovitskiy; Mikhail V. Korjik

doi:10.1117/12.946595

24 October 2012 Development of the new generation of glass-based neutron detection materials

Alexey E. Dosovitskiy, Georgy A. Dosovitskiy, Mikhail V. Korjik

Proceedings Volume 8507, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XIV; 85070Q (2012) https://doi.org/10.1117/12.946595
Event: SPIE Optical Engineering + Applications, 2012, San Diego, California, United States

Abstract

Approach to obtaining of neutron detector material alternative to ³He containing ionization gas detectors is proposed. Recently, a severe deficit of the ³He has pushed its price up strongly, so alternative cheaper detecting materials are demanded. Possible alternatives to ³He are materials containing ¹⁰B and ⁶Li isotopes. These two elements form many inorganic materials, either crystalline or amorphous. Glass scintillators look very advantageous as detector materials, especially for large area detectors, as their manufacturing could be cheaper and easier-to-scale, compared to single crystals and ceramics. A poor exciton transport, which is a fundamental feature of glass scintillators, limits their light yield and, therefore, practical use. Here we discuss a possibility to improve energy transfer to luminescent centers by creation of high concentration of crystalline luminophore particles in the glass matrix. This could be achieved through the controlled crystallization of the glass. We demonstrate how this approach works in well known Li-Al-Si (LAS) glass system. Partially crystallized Ce³⁺-doped glass with nanocrystalline inclusions is obtained, which shows the superior scintillation properties compared to amorphous glass. The material is characterized by an emission spectrum shift towards shorter wavelengths, which provides low light self-absorption.

Citation Download Citation

Alexey E. Dosovitskiy, Georgy A. Dosovitskiy, and Mikhail V. Korjik "Development of the new generation of glass-based neutron detection materials", Proc. SPIE 8507, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XIV, 85070Q (24 October 2012); https://doi.org/10.1117/12.946595

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