Abstract

Subject of study. This paper discusses nanostructures such as protective windows, plane-parallel sheets, and model plane-parallel sheets used in the development of modern fixed and mobile optical emission spectrometers and composition analyzers for rapid elemental analysis and determination of metal grades. These instruments are capable of determining the elemental compositions of pure metals and multi-component alloys within a few seconds. This paper also discusses a model depositional nanostructure: boron nitride nanotubes deposited in a single layer on an MgF₂ optical-crystal substrate being used as a prototype spark-protective window in an optical emission spectrometer. Aim of study. We aim to determine whether a boron nitride nanotube nanostructure deposited on the high-wear parts of protective windows in an optical emission spectrometer can be used to stabilize instrument operations in the ultraviolet spectral region. Methods. This paper uses a density functional theory with atomic basis sets (Hartree-Fock HF/STO-3G SP). Main results. In this paper, we discuss the use of boron nitride nanotubes deposited in a single layer as a special protective coating for spectrometers. Note that deposition of boron nitride nanolayers on spectrometer components such as protective windows has practical benefits in spectroscopy because the boron nitride material used in the fabrication of washers to hold wires and rods in analyzer instruments is resistant to high temperatures. Practical significance. The solutions proposed herein are specifically relevant to optical emission spectrometers used in metal analysis and can be used to generate requirements for upgrades to improve the service life and measurement stability and provide wear-resistant protective windows for such instruments.

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