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THE INFLUENCE OF THE MAIN OPERATING PARAMETERS OF THE RIBBON-SHAPED FLOW OF ELECTRONS ON THE QUALITY OF THE OBTAINED MICRORELIEF ON THE OPTICAL GLASS SURFACE

THE INFLUENCE OF THE MAIN OPERATING PARAMETERS OF THE RIBBON-SHAPED FLOW OF ELECTRONS ON THE QUALITY OF THE OBTAINED MICRORELIEF ON THE OPTICAL GLASS SURFACE

Abstract

The article presents the results of the study of the influence of the main operating parameters of the ribbon-shaped flow of electrons on the quality of the microrelief on the optical glass surface. The purpose of the work is to determine the influence of the main operating parameters of the ribbonshaped flow of electrons (shape, size and distribution of the electron current density) on the quality of the optical glass surface (absence of micro- and macro-defects on the surface, minimal residual micro-uniformities, etc.). The dependence of the influence of the main operating parameters of the low-energy ribbon-shaped flow of electrons on the quality of the surface microrelief of the "crown" optical glass is established, which makes it possible to evaluate the process of interaction of the electron flow with the optical glass surface. It is also established that the useful current of the electron flow is about 30% of the total emission current of the cathode of the electron gun. It is shown that such factors as: the decrease in the diameter of probes under the influence of the electron flow and the heating of probes during the measurement can affect the accuracy of determining the operating parameters of the ribbon-shaped electron flow by the probing method. Thus, after approximately 40-50 measurements, a significant decrease in the diameter of probes to 5% occurs, after which it becomes necessary to install new probes with identical characteristics. At the same time, the total error of the probe method for determining the density of the electron flow doesn’t exceed 8%. Using the method of atomicforce microscopy, it is established that after processing the surfaces of optical glass of the "crown" grade with a low-energy ribbon-shaped electron flow, provided that the rational shape, size and distribution of the current density are ensured both in the operating space and on the treated surface, their regularities are reduced from 40-75 nm to 3,5-5 nm. The practical value of the work lies in the production of various devices and complexes (as focusing photo-receiving and reflecting components) using the proposed technology. In general, the glass surface after electron beam treatment has a more uniform structure and is protected from microdefects, unlike surfaces without electron beam treatment, which finds application.

У статті наведено результати дослідження впливу основних робочих параметрів стрічкового потоку електронів на якість мікрорельєфу поверхні оптичного скла. Встановлено залежність впливу основних робочих параметрів (форми, розміру та розподілу густини струму) низькоенергетичного електронного потоку стрічкової форми на якість мікрорельєфу поверхні оптичного скла сорту «крон». Це дозволило оцінити процес взаємодії потоку електронів з поверхнею оптичного скла. Також було встановлено, що корисний струм потоку електронів становить близько 30 % від загального струму емісії катода електронної гармати. Показано, що на точність визначення робочих параметрів стрічкового потоку електронів методом зондування можуть впливати такі фактори: зменшення діаметра зондів під впливом потоку електронів та нагрівання зондів під час вимірювання. При цьому сумарна похибка зондового методу визначення густини струму потоку електронів не перевищувала 8 %. Методом атомно-силової мікроскопії встановлено, що після оброблення поверхонь оптичного скла сорту «крон» низькоенергетичним електронним пучком стрічкоподібної форми за умови забезпечення раціональної форми, розміру та розподілу густини струму як у робочому просторі, так і на обробленій поверхні нерівності зменшуються від 40-75 нм до 3,5-5 нм.

Keywords

стрічковий потік електронів, визначення робочих параметрів

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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