On the Possibility of Application Infrared Crystalline Fibers for Transfer of Temperature Signals from Bearings inside Nuclear Power Plants’ Containment

Abstract

The possibility of application flexible infrared Nanopolycrystalline (PIR) fibers made from radiation-resistant crystal systems AgBr – TlI and AgBr – TlBr0.46I0.54, for contact-less measure temperature bearings of own needs mechanisms and signal temperature transmission from nuclear power plant containment is considered. Radiation resistant allows the use that crystals and PIR fibers in high radiation conditions up to 500 kGy, what opens great opportunities of involving that optical materials in atomics. The class of the presented materials is distinguished by a wide transmission range in the range from 0.4 to 60 µm for crystals and from 2.0 to 25 µm for PIR fibers without absorption window, low optical loss (up to 0,1 dB/m), high flexible. The PIR fibers proposed in this paper are made by extrusion from single crystals of silver and thallium halides and are transparent in the mid-infrared range from 2 to 25 µm, which, according to the laws of Planck and Wien, corresponds to temperatures from +1100 °C to –200 °C.

Исследование вольт-амперных характеристик оптических материалов системы AgBr-AgI

“…Материалы системы AgBr−AgI обладают высокой фотостойкостью [5], которая позволяет использовать эти материалы без специальных защитных фильтров. Высокая устойчивость к радиационному облучению позволяет использовать эти кристаллические материалы и ИК световоды из них в условиях повышенного ионизирующего излучения до значений дозы 500 kGy, что открывает широкие возможности для внедрения таких оптических материалов в атомно-энергетические [6,7] и космические технологии [8].…”

Investigation of the system AgBr-AgI optical materials volt-ampere characteristics

“…Materials of the AgBr−AgI system have a high photo [5], which makes it possible to use these materials without special protective filters. High stability at radiation exposure makes it possible to use these crystalline materials and IR waveguide from them under conditions of increased ionizing radiation up to doses of 500 kGy, which offers exciting possibilities for the introduction of such optical materials in nuclear energy technologies [6,7] and astronautic ones [8].…”