Instruments and Experimental Techniques最新文献_第5页

Development of a Method for Obtaining the 37Ar Isotope for Calibration of a Two-Phase Emission Detector Based on Liquid Argon 液态氩两相发射探测器37Ar同位素定标方法的建立

IF 0.4 4区工程技术

Instruments and Experimental Techniques Pub Date : 2026-06-25 DOI: 10.1134/S0020441226700363

D. Yu. Akimov, F. B. Ata-Kurbonova, V. A. Belov, A. I. Bolozdynya, A. G. Kovalenko, A. M. Konovalov, V. N. Kornoukhov, A. V. Kumpan, A. V. Lukyashin, A. Yu. Presnyakov, O. E. Razuvaeva, G. E. Simakov, V. V. Sosnovtsev, A. V. Shakirov, D. I. Yurkov

引用次数: 0

Measurement of Nonlinear Distortions of Picosecond Signals by Digitizing Devices 用数字化设备测量皮秒信号的非线性畸变

IF 0.4 4区工程技术

Instruments and Experimental Techniques Pub Date : 2026-06-25 DOI: 10.1134/S002044122670048X

M. A. Nazarov, E. V. Semyonov

{"title":"Measurement of Nonlinear Distortions of Picosecond Signals by Digitizing Devices","authors":"M. A. Nazarov, E. V. Semyonov","doi":"10.1134/S002044122670048X","DOIUrl":"10.1134/S002044122670048X","url":null,"abstract":"This article discusses a difference method for measuring nonlinear signal distortions in digitizing devices. This method does not require the test signals to be strictly identical in shape. This allows for measuring nonlinear distortions in the picosecond range, where precise control of test signal shape is difficult. It is proposed to use test signals of different polarities for the simplicity of generating such pairs. Since the static nonlinearity of recording devices typically has a quadratic form, nonlinear distortions in the responses to such signals do not compensate each other. It is shown that, for given test signals in selected digitizing devices, nonlinear distortions of 0.1% or greater are observable, while nonlinear distortions introduced by digitizing devices are at least 0.4–0.5%. A technique for selecting dynamic nonlinear distortions is presented in which the static nonlinearity of the device is measured separately and then excluded from the measurement results. It has been shown that the polarity of dynamic nonlinear distortions can either coincide with the polarity of total nonlinear distortions or have the opposite polarity. It has been estimated that the maximum magnitude of dynamic nonlinear distortions is approximately comparable to the magnitude of static distortions.","PeriodicalId":587,"journal":{"name":"Instruments and Experimental Techniques","volume":"69 2","pages":"321 - 327"},"PeriodicalIF":0.4,"publicationDate":"2026-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148306081","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design of Non-contact Microwave Level Measurement System for Corrosive Radioactive Liquid at High Temperature Environment 高温环境下腐蚀性放射性液体非接触式微波液位测量系统的设计

IF 0.4 4区工程技术

Instruments and Experimental Techniques Pub Date : 2026-06-25 DOI: 10.1134/S0020441226700351

Shyam Sundar Jena, Manjiri Pande, Gopal Joshi, Sandip Shrotriya, Amitava Roy

{"title":"Design of Non-contact Microwave Level Measurement System for Corrosive Radioactive Liquid at High Temperature Environment","authors":"Shyam Sundar Jena, Manjiri Pande, Gopal Joshi, Sandip Shrotriya, Amitava Roy","doi":"10.1134/S0020441226700351","DOIUrl":"10.1134/S0020441226700351","url":null,"abstract":"This paper presents the design and preliminary validation of a non-contact microwave level measurement system tailored for corrosive and radioactive liquids in high-temperature environments, such as lead–bismuth eutectic at 800°C. The primary objective was to develop a safe, reliable, and long-life alternative to conventional contact-type sensors, which are prone to rapid degradation under such extreme conditions. A 24 GHz frequency-modulated continuous-wave (FMCW) radar configuration was selected due to its superior short-range accuracy. The system incorporates several novel design features: a conical horn antenna optimized for narrow beamwidth, a quartz-based microwave window, and a stainless-steel S-shaped circular waveguide that simultaneously enables efficient microwave propagation and effective gamma radiation shielding. Signal processing combines fast Fourier transform (FFT) and chirp Z-transform (CZT) algorithms to enhance intermediate frequency estimation, thereby improving range resolution. Experimental validation on a laboratory test bench demonstrated input matching of antenna better than 15 dB and confirmed the feasibility of centimeter-level resolution. FFT-based processing showed limited sensitivity to small distance variations, whereas the CZT approach successfully detected 1 cm positional changes, though with non-linear response linked to oscillator control voltage non-linearity. Future work will focus on correcting non-linearities and deploying the system in harsh environments.","PeriodicalId":587,"journal":{"name":"Instruments and Experimental Techniques","volume":"69 2","pages":"385 - 399"},"PeriodicalIF":0.4,"publicationDate":"2026-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148306078","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Feasibility Study on Self-forming Self-aligned Microlens Array Fabricated by Transparent Packaging Medium 透明封装介质制备自成形自对准微透镜阵列的可行性研究

IF 0.4 4区工程技术

Instruments and Experimental Techniques Pub Date : 2026-05-19 DOI: 10.1134/S0020441226700053

X. T. Zhang, Y. F. Yang, C. Q. Guo, Y. Wu, L. Wang, L. Liu, L. N. Liu, L. B. Li, X. X. Han, Z. B. Li, G. Q. Zhang

{"title":"Feasibility Study on Self-forming Self-aligned Microlens Array Fabricated by Transparent Packaging Medium","authors":"X. T. Zhang, Y. F. Yang, C. Q. Guo, Y. Wu, L. Wang, L. Liu, L. N. Liu, L. B. Li, X. X. Han, Z. B. Li, G. Q. Zhang","doi":"10.1134/S0020441226700053","DOIUrl":"10.1134/S0020441226700053","url":null,"abstract":"Aiming at the challenges of high cost, complex manufacturing processes, and low efficiency in coupling and alignment for microlens arrays on the surface of optoelectronic devices, a fabrication method of self-forming and self-aligning microlens array is proposed. The method forms a microlens array based on the interaction of surface tension, gravity, and air pressure of a liquid transparent packaging medium, aiming at simplifying the manufacturing process of the microlens array on the surface of an optoelectronic device, reducing the cost and improving the production efficiency. Firstly, this paper theoretically analyzes the force on the lower liquid surface after the liquid transparent encapsulation medium drops on the upper surface of the metal film step and discusses the feasibility of forming microlens array by this method. After calculation, the filling factor is improved by 15.4% under the conditions of pixel size of 13 μm, photosensitive area of 10 μm, metal film mesh diameter of 12 μm, and metal step height of 2 μm. Then, experiments are carried out on two kinds of metal meshes with different specifications. Experimental results demonstrate that this method effectively produces microlens arrays with excellent uniformity and has obvious convergence effect on light. Microlens arrays show good performance in metal mesh arrays with apertures of 1 mm and 80 μm and have good application prospects in array photodetectors, displays, optical imaging, optical communication, and other fields.","PeriodicalId":587,"journal":{"name":"Instruments and Experimental Techniques","volume":"69 1","pages":"134 - 146"},"PeriodicalIF":0.4,"publicationDate":"2026-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147967991","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Crimean Laser Interference Complex 克里米亚激光干涉综合体

IF 0.4 4区工程技术

Instruments and Experimental Techniques Pub Date : 2026-05-19 DOI: 10.1134/S0020441226700144

G. I. Dolgikh, M. A. Bolsunovskii, A. V. Garmashov, V. A. Dulov, O. B. Kudinov, A. A. Latushkin, V. K. Fishchenko, V. A. Chupin, V. A. Shvets, S. V. Yakovenko

{"title":"Crimean Laser Interference Complex","authors":"G. I. Dolgikh, M. A. Bolsunovskii, A. V. Garmashov, V. A. Dulov, O. B. Kudinov, A. A. Latushkin, V. K. Fishchenko, V. A. Chupin, V. A. Shvets, S. V. Yakovenko","doi":"10.1134/S0020441226700144","DOIUrl":"10.1134/S0020441226700144","url":null,"abstract":"A description is given of a 15.1-m laser strainmeter installed in Katsiveli (Crimea), designed to record microdisplacements of the earth’s crust based on a device in the frequency range from zero (conditionally) to 1000 Hz with an accuracy of 0.1 nm. The main interference unit of the laser strainmeter is mounted on a concrete base rigidly connected to the upper layer of the earth’s crust, and the corner reflector is located on another concrete base, which is installed on a sand cushion. Between the main interference unit and the corner reflector, the beam of a frequency-stabilized helium–neon laser propagates along a sealed beam guide. A laser pressure variation meter is installed in the sea at a depth of 28 m and at a distance of 580 m from the laser strainmeter. It is designed to record changes in bottom hydrostatic pressure in the frequency range from zero (conditionally) to 1000 Hz with an accuracy of 13.5 mPa. All information obtained by these installations is sent via cable lines to the laboratory room, where, after preliminary processing, it is placed into the experimental database. The conducted synchronous testing of a laser strainmeter and a laser pressure variation meter demonstrated their great potential for studying vibrations and waves in the microseismic range.","PeriodicalId":587,"journal":{"name":"Instruments and Experimental Techniques","volume":"69 1","pages":"181 - 187"},"PeriodicalIF":0.4,"publicationDate":"2026-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147968016","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An Automated System for Probe Measurements of Dynamic Characteristics of Pulse Discharges 脉冲放电动态特性探针自动测量系统

IF 0.4 4区工程技术

Instruments and Experimental Techniques Pub Date : 2026-05-19 DOI: 10.1134/S0020441226700296

I. I. Usatov, N. P. Poluektov

引用次数: 0

LGVI-100/50 Ladder Generator of High-Voltage Pulses LGVI-100/50高压脉冲梯形发生器

IF 0.4 4区工程技术

Instruments and Experimental Techniques Pub Date : 2026-05-19 DOI: 10.1134/S0020441226700132

S. I. Gusev, A. B. Ermakov, P. Yu. Krasheninin, V. P. Makarov, G. M. Mustafa, S. V. Chistilin, E. A. Sharipov, A. A. Ananichev, A. P. Fokin, M. Yu. Glyavin

引用次数: 0

Method and System for Assessing Mechanical and Morphological Characteristics of Delicate Microstructures 精细微结构力学和形态特征评估方法与系统

IF 0.4 4区工程技术

Instruments and Experimental Techniques Pub Date : 2026-05-19 DOI: 10.1134/S0020441226700211

E. D. Minaeva, N. V. Minaev, V. I. Yusupov

引用次数: 0

Laboratory Setup for Studying Combustion of High-Energy Materials with High-Speed Visualization 高速可视化研究高能材料燃烧的实验室装置

IF 0.4 4区工程技术

Instruments and Experimental Techniques Pub Date : 2026-05-19 DOI: 10.1134/S0020441226700120

F. A. Gubarev, L. Yu. Davydova, A. A. Zykov

{"title":"Laboratory Setup for Studying Combustion of High-Energy Materials with High-Speed Visualization","authors":"F. A. Gubarev, L. Yu. Davydova, A. A. Zykov","doi":"10.1134/S0020441226700120","DOIUrl":"10.1134/S0020441226700120","url":null,"abstract":"An experimental setup for studying the process of initiating combustion of high-energy materials is considered. The setup combines two combustion initiation options, synchronized with a two-channel visualization system based on a copper bromide vapor laser monitor. The choice is between contact initiation by contacting the test material with a heated electrical conductor or laser initiation using a solid-state laser with a wavelength of 635 nm and fiber optic radiation output. In both initiation modes, the moment of the start of the exposure is synchronized with the moment of the start of recording by the Evercam F 1000-16-C high-speed cameras, which record images in their own glow and images of the laser monitor. Laser monitoring combined with direct video recording allows for simultaneous examination of the sample surface in a selected area and flame spread across the entire sample. When working as part of a laser monitor, both cameras operate as slaves. A special feature of the external synchronization of Evercam cameras is the need to form trains of sync pulses synchronized with the radiation pulses of the brightness amplifier and starting at the moment of the start of the exposure. In this work, synchronization is implemented using fiber optic communication lines and the STM32F103C8T6 microcontroller board. The possibility of using the designed setup for studying the initiation and high-temperature combustion of a thermite mixture based on Al–CuO is shown.","PeriodicalId":587,"journal":{"name":"Instruments and Experimental Techniques","volume":"69 1","pages":"241 - 248"},"PeriodicalIF":0.4,"publicationDate":"2026-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147968170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development and Investigation of Semiconductor Detectors of Ionizing Radiation Based on p-Si/n-InP Heterostructures 基于p-Si/n-InP异质结构的电离辐射半导体探测器的研制

IF 0.4 4区工程技术

Instruments and Experimental Techniques Pub Date : 2026-05-19 DOI: 10.1134/S0020441226700259

S. A. Radzhapov, A. S. Saidov, Sh. N. Usmonov, B. S. Radzhapov

引用次数: 0