Investigation of the protective capabilities of glass from laser sounding depending on its elemental composition

Keywords: information protection, laser acoustic reconnaissance systems, absorption coefficient, reflection coefficient

Abstract

One of the most vulnerable issues in the technical protection of information is to obtain data via leakage through the opto-electronic channel.

In this paper, studies of the protective capabilities of glass from laser sounding depending on its elemental composition were carried out using such indicators as the coefficients of reflection and absorption of the laser beam by the window glass.

As a result of the work, an experimental installation based on a continuous solid-state laser was assembled.

The study of the elemental composition of window glass, which is produced by modern industry, X-ray fluorescence method and the study of the coefficients of reflection and absorption of glass samples in the experimental setup showed that the studied window glass chemically belongs to quartz (silicate).

All chemical elements involved in its formation can be divided into 3 groups: glass-forming, transitional, modifiers, which affects the optical properties of the studied glasses, as the elements used have different not only qualitative but also quantitative parameters.

Absorption increases if the number of chemical elements that exhibit amphoteric and non-metallic properties and have (-charge) decreases, and increases if the number of chemical elements in the glass that exhibit the most alkaline, alkaline earth properties and in which the radius of cations (+ions) increases.

Systematization of the elemental and quantitative composition of the studied window glass in accordance with the periods and groups of the periodic table of chemical elements, enabled the relationship between the electronic structure of chemical elements and the protective properties of glass

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Author Biographies

Nazarii Dzianyi, Lviv Polytechnic National University

Department of Information Security

Valeriy Dudykevych, Lviv Polytechnic National University

Department of Information Security

Ivan Opirskyy, Lviv Polytechnic National University

Department of Information Security

Larysa Rakobovchuk, Lviv Polytechnic National University

Department of Information Security

Petro Haraniuk, Lviv Polytechnic National University

Department of Information Security

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Optical scheme of installation: L – laser; S – sample; D1, D2 – detector (device for measuring the power of laser radiation)

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Published
2022-09-30
How to Cite
Dzianyi, N., Dudykevych, V., Opirskyy, I., Rakobovchuk, L., & Haraniuk, P. (2022). Investigation of the protective capabilities of glass from laser sounding depending on its elemental composition. EUREKA: Physics and Engineering, (5), 162-174. https://doi.org/10.21303/2461-4262.2022.002527
Section
Material Science