2019, Kazieva, T. V., Gubskiy, K. L., Kuznetsov, A. P., Reshetov, V. N., Казиева, Татьяна Вадимовна, Губский, Константин Леонидович, Кузнецов, Андрей Петрович, Решетов, Владимир Николаевич

© 2019 Optical Society of America.A three-coordinate heterodyne laser interferometer has been developed to measure the displacement of the probe microscope scanner with a subnanometer resolution that provides traceability of measurements to the standard of meter through the wavelength of a stabilized He–Ne laser. Main sources of errors are investigated, and their influence is minimized so that the resulting measurement uncertainty of the system does not exceed 0.2 nm, and the resolution is 0.01 nm. The investigation of metrological characteristics of the three-coordinate interferometer was carried out with a scanning probe microscopy (SPM) NanoScan-3D using TGZ-type calibration gratings. The values measured with SPM fell within the 95% confidence interval given by Physikalisch-Technische Bundesanstalt (PTB) (Germany). SPM equipped with a laser interferometer was used to measure the characteristics of dynamic etalons of geometric dimensions.

2024, Oleinik, G. M., Branitsky, A. V., Galanin, M. P., Grabovski, E. V., Tishchenko, I. Y., Gubskiy, K. L., Kuznetsov, A. P., Тищенко, Илья Юрьевич, Губский, Константин Леонидович, Кузнецов, Андрей Петрович

2019, Alekseev, V. V., Derkach, V. N., Mikhaylyuk, A. V., Gubskiy, K. L., Pikalova, M. A., Kuznetsov, A. P., Михайлюк, Андрей Владимирович, Губский, Константин Леонидович, Кузнецов, Андрей Петрович

© 2019 Published under licence by IOP Publishing Ltd. The paper presents the diagnostic system for velocity measurements of reflecting objects in high energy physics experiments. The principle of continuous velocity measurements based on the Doppler frequency shift analysis of a probe monochromatic wave reflected by the moving surface of the sample. System is designed to measure velocity in the interval of 5-50 km/s. Powerful laser pulses expose the target and generate shock waves inside it. The back side of target is illuminated by probe laser beam at a wavelength of 660 nm. Scattered probe light collected by a lens and injected into the optical system. Two Mach-Zehnder interferometers with different reference delay etalons form a vernier measuring system. A passive channel records luminescence in the shock wave front. Spatial resolution of the optical layout is about 3 μm.

2020, Kazieva, T. V., Gubskiy, K. L., Reshetov, V. N., Kuznetsov, A. P., Казиева, Татьяна Вадимовна, Губский, Константин Леонидович, Решетов, Владимир Николаевич, Кузнецов, Андрей Петрович

© Published under licence by IOP Publishing Ltd.The paper describes a method for measuring the surface area function of the tips of the probes of nanohardness testers using a laser interferometer. The features of the developed system provide traceability of measurements to the standard of length through the wavelength of a stabilized source of laser radiation. In addition, it is possible to measure the parameters of the probe tip without removing it from the nanohardness tester, which allows the device not to be taken out of working condition and provides unambiguous measurements.

2021, Kazieva, T. V., Gubskiy, K. L., Tischenko, I. Yu., Glukhov, R. D., Kuznetsov, A. P., Казиева, Татьяна Вадимовна, Губский, Константин Леонидович, Тищенко, Илья Юрьевич, Кузнецов, Андрей Петрович

© 2021 Author(s).In this article, we propose a method for improving accuracy in calibrating Leeb hardness testers using fiber interferometric systems. The calibration system is implemented using the photonic Doppler velocimetry technique. This paper provides estimates of the measurement uncertainty arising in the calibration system and describes a method for improving accuracy, which takes into account the signal-to-noise ratio, sampling rate, and processing parameters.

2020, Laukhin, Ya. N., Frolov, I. N., Branitskii, A. V., Pirog, V. A., Tishchenko, I. Yu., Gubskiy, K. L., Kuznetsov, A. P., Пирог, Владимир Андреевич, Тищенко, Илья Юрьевич, Губский, Константин Леонидович, Кузнецов, Андрей Петрович

© Published under licence by IOP Publishing Ltd.The report presents a laser diagnostic system designed to analyze the behavior of a matter in extreme states and the propagation of shock waves. The research system consists of a pair of velocity interferometer systems for any reflector (VISAR), push pull and conventional VISARs, forming a vernier scheme. This configuration was designed for Angara-5-1 facility. Test experiments of metal plate acceleration using magnetic field were carried out. The velocities up to 6 km/s were obtained.

2020, Ehret, M., Santos, J. J., Zielbauer, B., Abe, Y., Bukharskii, N. D., Kochetkov, Y. V., Gubskiy, K. L., Kuznetsov, A. P., Korneev, P. A., Бухарский, Николай Дмитриевич, Кочетков, Юрий Владимирович, Губский, Константин Леонидович, Кузнецов, Андрей Петрович, Корнеев, Филипп Александрович

© Published under licence by IOP Publishing Ltd.Proton radiography is a common diagnostic technique in laser-driven magnetic field generation studies. It is based on measuring proton beam deflection in electromagnetic fields induced around the target with the help of radiochromic film stacks. Unraveling information recorded in experimental radiographs and extracting the field profiles is not always a straightforward task. In this paper, some aspects of data analysis by reproducing experimental radiographs in numerical simulations are described. The approach allows determining the field strength and structure in the target area for various target geometries.

2022, Kazieva, T. V., Tishchenko, I. Y., Reshetov, V. N., Gubskiy, K. L., Pirog, V. A., Казиева, Татьяна Вадимовна, Тищенко, Илья Юрьевич, Решетов, Владимир Николаевич, Губский, Константин Леонидович, Пирог, Владимир Андреевич

© 2022, Pleiades Publishing, Ltd.Abstract: The interference method for determining the velocity of objects using direct optical heterodyning (photonic Doppler velocimetry) has become widespread due to the ease of setting up the fiber-optic system, the unambiguous results that it produces, and the wide possibilities for varying the measurement accuracy and temporal resolution. The accuracy of velocity measurements can be fractions of a percent, but there are a number of factors that interfere with this. For example, a change in the velocity of an object, that is, its movement with acceleration, leads to a broadening of the signal spectrum with an increase in the working time window and, as a result, to a decrease, rather than an increase, in the accuracy of measuring the velocity. In this letter, a method is proposed that allows one to compensate for the effect of acceleration on the accuracy of velocity measurement. The proposed model for processing the registered signals makes it possible to determine both the acceleration and the velocity of the object. The applied algorithm made it possible to avoid the expansion of the spectrum with an increase in the time window and to improve the accuracy of measuring the velocity of a freely falling body by an order of magnitude.

2020, Ananev, S. Yu., Grishin, L. I., Kazieva, T. V., Gubskiy, K. L., Kuznetsov, A. P., Tishchenko, I. Yu., Glukhov, R. D., Pirog, V. A., Казиева, Татьяна Вадимовна, Губский, Константин Леонидович, Кузнецов, Андрей Петрович, Тищенко, Илья Юрьевич, Пирог, Владимир Андреевич

© Published under licence by IOP Publishing Ltd.The paper proposes a method for combining photon Doppler velocimetry and a system of speed interferometers for any reflective systems, which allows one to study the behavior of transparent media under the action of powerful shock waves without the use of additional reflective surfaces. The paper presents the results of an experiment on the propagation of a shock wave in water. In this experiment, water was an absorber; however, the proposed method would also work provided that the test material is transparent and provides reflection.

2020, Pirog, V. A., Gubskiy, K. L., Tishenko, I. Yu., Kazieva, T. V., Пирог, Владимир Андреевич, Губский, Константин Леонидович, Тищенко, Илья Юрьевич, Казиева, Татьяна Вадимовна

© Published under licence by IOP Publishing Ltd.The first result of the developed hybrid system for measuring the mass velocity of a matter is presented in the article. It combines two methods, VISAR and PDV, to compensate for their shortcomings. The scheme of the measuring system and the results of the laboratory experiment are shown.