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Digital Method for Separation of Neutrons and Gamma Quanta Registered by a Proportional Counter 用比例计数器记录中子和伽马量子分离的数字方法
IF 0.4 4区 工程技术
Instruments and Experimental Techniques Pub Date : 2026-04-01 DOI: 10.1134/S0020441225701416
V. A. Khryackov, V. V. Ketlerov, T. A. Khromyleva
{"title":"Digital Method for Separation of Neutrons and Gamma Quanta Registered by a Proportional Counter","authors":"V. A. Khryackov,&nbsp;V. V. Ketlerov,&nbsp;T. A. Khromyleva","doi":"10.1134/S0020441225701416","DOIUrl":"10.1134/S0020441225701416","url":null,"abstract":"<p>This work describes some aspects of the digital signal processing for the proportional counter. The pulse shape analysis of the signals from neutrons and gamma quanta can provide information about the difference for the particle discrimination. In addition, it is possible to tell the position of the particle registration inside the counter in order to eliminate the wall effect and to improve the energy resolution.</p>","PeriodicalId":587,"journal":{"name":"Instruments and Experimental Techniques","volume":"68 6","pages":"949 - 956"},"PeriodicalIF":0.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147579192","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
Aerosol Chamber for Modeling Atmospheric Processes 模拟大气过程的气溶胶室
IF 0.4 4区 工程技术
Instruments and Experimental Techniques Pub Date : 2026-04-01 DOI: 10.1134/S0020441225701210
Hong-Da Tai, Wei Zhong, Yuan Wang, Yi Li, Zi-Bo Zhuang, Pak-Wai Chan
{"title":"Aerosol Chamber for Modeling Atmospheric Processes","authors":"Hong-Da Tai,&nbsp;Wei Zhong,&nbsp;Yuan Wang,&nbsp;Yi Li,&nbsp;Zi-Bo Zhuang,&nbsp;Pak-Wai Chan","doi":"10.1134/S0020441225701210","DOIUrl":"10.1134/S0020441225701210","url":null,"abstract":"<p>Simulated atmospheric process experiments in aerosol chambers can achieve shorter testing times and lower visibility levels than those typical for experiments in natural environments. In this paper, the design of an aerosol chamber is described, and the results of studies on its characteristics are presented. During the initial phase of the experiment, the rate of change in the extinction coefficient was relatively low, indicating a stable environment within the simulation chamber. Comparison of the stages with the slowest and fastest changes in extinction coefficient showed that during the slowest rate of change, the particle number concentration in the 0.28–0.40 μm size range exhibited greater variation, while during the fastest rate of change, the particle number concentration in the 0.40–2.00 μm size range showed more significant variation.</p>","PeriodicalId":587,"journal":{"name":"Instruments and Experimental Techniques","volume":"68 6","pages":"1039 - 1050"},"PeriodicalIF":0.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147579195","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
Laser Amplifier Based on a 5 mm Yb:YAG Rod Operating at Room Temperature 基于室温工作的5mm Yb:YAG棒的激光放大器
IF 0.4 4区 工程技术
Instruments and Experimental Techniques Pub Date : 2026-04-01 DOI: 10.1134/S0020441225701398
V. I. Samoilov, N. I. Karpov, V. A. Ostrovskii, E. A. Peganov, A. V. Dem’yanov, K. N. Makarov, I. A. Bulychov, I. A. Zuikov, A. N. Boiko
{"title":"Laser Amplifier Based on a 5 mm Yb:YAG Rod Operating at Room Temperature","authors":"V. I. Samoilov,&nbsp;N. I. Karpov,&nbsp;V. A. Ostrovskii,&nbsp;E. A. Peganov,&nbsp;A. V. Dem’yanov,&nbsp;K. N. Makarov,&nbsp;I. A. Bulychov,&nbsp;I. A. Zuikov,&nbsp;A. N. Boiko","doi":"10.1134/S0020441225701398","DOIUrl":"10.1134/S0020441225701398","url":null,"abstract":"<p>A detailed study of the created radiation amplifier (quantron) with diode pumping and an active medium in the form of an Yb<sup>3+</sup>:YAG rod with a diameter of 5 mm and a length of 105 mm with an ytterbium concentration of 1.1%, operating at room temperature, was carried out. An analysis of the spectral characteristics of the device’s radiation was performed, and the gain per pass was studied in different operating modes: single pulse, 2 and 10 Hz. The dependence of the parameters of the induced thermal lens on the duration of the amplifier operation was studied. The characteristics of a pump consisting of five diode matrices emitting at a wavelength of λ = 940 nm, with a total radiation power of approximately 25 kW, were investigated. A gain of approximately 0.4 cm<sup>–1</sup> was achieved for single pulses and at a pulse repetition frequency of 2 Hz as well as 0.28 cm<sup>–1</sup> at a pulse repetition frequency of 10 Hz.</p>","PeriodicalId":587,"journal":{"name":"Instruments and Experimental Techniques","volume":"68 6","pages":"993 - 1000"},"PeriodicalIF":0.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147579427","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
A Vacuum Ultraviolet Radiation Source Based on an Inductively Coupled Radio-Frequency Discharge in Hydrogen for Modeling the Dynamics of Lunar Dust Clouds 基于氢电感耦合射频放电的真空紫外辐射源用于模拟月球尘埃云动力学
IF 0.4 4区 工程技术
Instruments and Experimental Techniques Pub Date : 2026-04-01 DOI: 10.1134/S0020441225701283
A. V. Vodop’yanov, E. I. Preobrazhenskii, M. E. Viktorov
{"title":"A Vacuum Ultraviolet Radiation Source Based on an Inductively Coupled Radio-Frequency Discharge in Hydrogen for Modeling the Dynamics of Lunar Dust Clouds","authors":"A. V. Vodop’yanov,&nbsp;E. I. Preobrazhenskii,&nbsp;M. E. Viktorov","doi":"10.1134/S0020441225701283","DOIUrl":"10.1134/S0020441225701283","url":null,"abstract":"<p>A vacuum ultraviolet radiation source for photoionization of dust particles in laboratory model experiments to study the dynamics of dust clouds near the lunar surface is described. The source of vacuum ultraviolet radiation is an inductively coupled RF discharge in hydrogen. It is shown that the radiation in the line <i>L</i><sub>α</sub> (wavelength 121.6 nm, quantum energy 10.2 eV) is up to 150 mW with the power input into the discharge at the level of 50 W. The radiation power density at a distance of 10 cm from the source is 4 × 10<sup>–5</sup> W/cm<sup>2</sup>, which exceeds the power density of solar radiation on the surface of the Moon in this range of wavelengths. This opens up prospects for using the proposed radiation source in laboratory modeling of dust cloud dynamics.</p>","PeriodicalId":587,"journal":{"name":"Instruments and Experimental Techniques","volume":"68 6","pages":"1027 - 1032"},"PeriodicalIF":0.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147579090","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 Injector of a Focused Beam of Deuterium Atoms for Plasma Heating 用于等离子体加热的聚焦氘原子束注入器
IF 0.4 4区 工程技术
Instruments and Experimental Techniques Pub Date : 2026-04-01 DOI: 10.1134/S0020441225701428
I. V. Shikhovtsev, V. Kh. Amirov, T. D. Akhmetov, V. P. Belov, R. V. Vakhrushev, A. I. Gorbovskii, V. I. Davydenko, A. N. Dranichnikov, V. A. Kapitonov, V. V. Kolmogorov, I. D. Maslakov, V. V. Oreshonok, A. V. Sorokin, E. I. Shubin
{"title":"An Injector of a Focused Beam of Deuterium Atoms for Plasma Heating","authors":"I. V. Shikhovtsev,&nbsp;V. Kh. Amirov,&nbsp;T. D. Akhmetov,&nbsp;V. P. Belov,&nbsp;R. V. Vakhrushev,&nbsp;A. I. Gorbovskii,&nbsp;V. I. Davydenko,&nbsp;A. N. Dranichnikov,&nbsp;V. A. Kapitonov,&nbsp;V. V. Kolmogorov,&nbsp;I. D. Maslakov,&nbsp;V. V. Oreshonok,&nbsp;A. V. Sorokin,&nbsp;E. I. Shubin","doi":"10.1134/S0020441225701428","DOIUrl":"10.1134/S0020441225701428","url":null,"abstract":"<p>An injector of a beam of fast deuterium atoms with an energy of 55 keV, a power of 1 MW and a pulse duration of up to 2 s has been developed in order to further increase the plasma heating power at the TCV tokamak (Tokamak à Configuration Variable, Lausanne, Switzerland). The ion beam is formed in the injector by a triode multislit ion-optical system with slit-shaped holes. The electrodes are spherical segments, which provide ballistic focusing of the beam at a distance of 4.0 m. The selection of ions for the formation of a primary ion beam is carried out from the surface of the plasma emitter, which is created and maintained in the discharge chamber of the plasma source using a high-frequency induction discharge. The design of the injector is presented, and its main elements, power supply, and control systems are described in detail. The results of its experimental tests at the TCV tokamak are presented.</p>","PeriodicalId":587,"journal":{"name":"Instruments and Experimental Techniques","volume":"68 6","pages":"965 - 976"},"PeriodicalIF":0.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147579210","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
Compact Stand-Alone Refrigerator for Operating at Temperatures up to 0.35 K 紧凑型独立冰箱的工作温度高达0.35 K
IF 0.4 4区 工程技术
Instruments and Experimental Techniques Pub Date : 2026-04-01 DOI: 10.1134/S0020441225701295
A. D. Golovanova, A. M. Troyanovskii
{"title":"Compact Stand-Alone Refrigerator for Operating at Temperatures up to 0.35 K","authors":"A. D. Golovanova,&nbsp;A. M. Troyanovskii","doi":"10.1134/S0020441225701295","DOIUrl":"10.1134/S0020441225701295","url":null,"abstract":"<p>A compact autonomous cryostat operating on the basis of a closed-loop Gifford-McMahon cryocooler of industrial production with an operating temperature of up to 0.35 K is described. The cryostat does not have external pumps or other communications except for those necessary for the operation of the cryocooler compressor. The operating temperature is ensured by sorption pumping of isotope vapors <sup>4</sup>He and <sup>3</sup>He. The required gas supply is constantly kept inside the cryostat. The height of the cryostat body is 600 mm, the diameter of the body is 250 mm. The gas condensation time is less than 1 h, and the duration of continuous operation is up to 12 h (it depends on the power released in the cold stage).</p>","PeriodicalId":587,"journal":{"name":"Instruments and Experimental Techniques","volume":"68 6","pages":"1095 - 1100"},"PeriodicalIF":0.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147579424","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
Pyrometric Technique in Explosive Experiments 炸药实验中的高温测量技术
IF 0.4 4区 工程技术
Instruments and Experimental Techniques Pub Date : 2026-04-01 DOI: 10.1134/S0020441225701362
M. I. Kulish, D. N. Nikolaev, S. V. Dudin, V. B. Mintsev
{"title":"Pyrometric Technique in Explosive Experiments","authors":"M. I. Kulish,&nbsp;D. N. Nikolaev,&nbsp;S. V. Dudin,&nbsp;V. B. Mintsev","doi":"10.1134/S0020441225701362","DOIUrl":"10.1134/S0020441225701362","url":null,"abstract":"<p>The aspects of application of high-speed pyrometry in a dynamic explosive experiment are described. The operating principle of the technique, implementation options, and achievable parameters are described. The calibration method, the method of selecting the spectral interval, and the method of expanding the dynamic range are briefly described. Estimates of the achievable ranges of the measured temperatures, limited from below by noise of the oscilloscope or signal amplifier, are given. A method for calculating the radiation of an object consisting of layers with reflections at the boundaries is proposed. The main expressions for signal processing for the purpose of calculating color and brightness temperatures are given. References to the experimental works in which the pyrometric technique was used are given.</p>","PeriodicalId":587,"journal":{"name":"Instruments and Experimental Techniques","volume":"68 6","pages":"1101 - 1111"},"PeriodicalIF":0.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147579425","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
Ion Source in Negative Ion Lifetime Measurements of Resonance Electron Capture by Molecules 分子共振电子俘获负离子寿命测量中的离子源
IF 0.4 4区 工程技术
Instruments and Experimental Techniques Pub Date : 2026-04-01 DOI: 10.1134/S0020441225701374
V. G. Lukin, O. G. Khvostenko, G. M. Tuimedov
{"title":"Ion Source in Negative Ion Lifetime Measurements of Resonance Electron Capture by Molecules","authors":"V. G. Lukin,&nbsp;O. G. Khvostenko,&nbsp;G. M. Tuimedov","doi":"10.1134/S0020441225701374","DOIUrl":"10.1134/S0020441225701374","url":null,"abstract":"<p>Formation, autoionization, and lifetime of long-lived negative molecular ions of nitrobenzene (C<sub>6</sub>H<sub>5</sub>NO<sub>2</sub>) formed by resonance capture were studied using a static mass spectrometer MI-1201V, reequipped for these purposes. An additional modification of the ion source was carried out in order to exclude the ion desorbed from the chamber walls from entering the ion beam emerging from the slit of the ionization chamber cover, which resulted in distortion of the ion lifetime (τ<sub>a</sub>) measurement results. The absence of the temperature dependence of the ion lifetime in the range of (393–473 K) was confirmed, which, on the one hand, indicates the effective exclusion of the integration of desorbed ions into the ion beam emerging from the slit of the ionization chamber cover, and, on the other hand, gives the correct value of τ<sub>a</sub> = 50.0 ± 1.0 μs.</p>","PeriodicalId":587,"journal":{"name":"Instruments and Experimental Techniques","volume":"68 6","pages":"1066 - 1072"},"PeriodicalIF":0.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147579562","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
AC Oscillation Former for Superconductor Research 超导体交流振荡成振器的研究
IF 0.4 4区 工程技术
Instruments and Experimental Techniques Pub Date : 2026-04-01 DOI: 10.1134/S0020441225701349
E. P. Krasnoperov, N. S. Levchenko, A. V. Prutkov
{"title":"AC Oscillation Former for Superconductor Research","authors":"E. P. Krasnoperov,&nbsp;N. S. Levchenko,&nbsp;A. V. Prutkov","doi":"10.1134/S0020441225701349","DOIUrl":"10.1134/S0020441225701349","url":null,"abstract":"<p>A power source has been developed that generates various configurations of alternating-current oscillations of a given duration. The source current adds heat to a superconductor in small controlled portions, which allows studying dynamic processes on alternating current with amplitudes <i>I</i><sub>a</sub> exceeding the average critical values <i>I</i><sub>c</sub>. It is possible to predict the appearance of a narrow normal zone and determine the conditions for stable operation of the superconductor at <i>I</i><sub>a</sub> &gt; <i>I</i><sub>c</sub>. On SuperOx superconducting tapes with a thin copper coating, the process of developing thermal instability up to the material burnout was observed.</p>","PeriodicalId":587,"journal":{"name":"Instruments and Experimental Techniques","volume":"68 6","pages":"957 - 964"},"PeriodicalIF":0.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147579211","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
Microsecond Magnetic Pulse Generator and Accompanying Method for Domain Wall Dynamics Research 微秒磁脉冲发生器及其伴随的畴壁动力学研究方法
IF 0.4 4区 工程技术
Instruments and Experimental Techniques Pub Date : 2026-04-01 DOI: 10.1134/S0020441225701386
A. S. Pashenko, N. N. Chernousov, A. A. Turpak, A. V. Davydenko
{"title":"Microsecond Magnetic Pulse Generator and Accompanying Method for Domain Wall Dynamics Research","authors":"A. S. Pashenko,&nbsp;N. N. Chernousov,&nbsp;A. A. Turpak,&nbsp;A. V. Davydenko","doi":"10.1134/S0020441225701386","DOIUrl":"10.1134/S0020441225701386","url":null,"abstract":"<p>To measure nonuniversal parameters of domain wall dynamics in thin magnetic films, authors developed an instrument that, in conjunction with a microscope utilizing the magneto-optical Kerr effect, enables the study of domain wall dynamics at velocities two to three orders of magnitude higher than those measurable with a standard electromagnet. For processing measurement results obtained using arbitrary-shaped magnetic field pulses, a mathematical correction method was developed and successfully implemented in software. A comparison of the nonuniversal parameters of the domain wall creep regime, derived from raw data versus corrected data using this mathematical method, demonstrated the necessity of its application to improve the accuracy of the determined parameters.</p>","PeriodicalId":587,"journal":{"name":"Instruments and Experimental Techniques","volume":"68 6","pages":"1021 - 1026"},"PeriodicalIF":0.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147579429","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
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