Instruments and Experimental Techniques最新文献_第3页

Pulsed Power Supply Module of Betatron Electromagnet for Mobile Gamma-ray Generator 移动伽玛射线发生器用电子磁铁脉冲电源模块

IF 0.4 4区工程技术

Instruments and Experimental Techniques Pub Date : 2026-08-16 DOI: 10.1134/S0020441226700752

O. A. Shamro, A. I. Bunin, V. I. Nizhegorodtsev, K. V. Savchenko, V. D. Selemir, V. A. Fomichev, A. A. Chinin

{"title":"Pulsed Power Supply Module of Betatron Electromagnet for Mobile Gamma-ray Generator","authors":"O. A. Shamro, A. I. Bunin, V. I. Nizhegorodtsev, K. V. Savchenko, V. D. Selemir, V. A. Fomichev, A. A. Chinin","doi":"10.1134/S0020441226700752","DOIUrl":"10.1134/S0020441226700752","url":null,"abstract":"The paper concerns a pulsed power supply module of the electromagnet for a mobile gamma-ray generator based on a BIM-type (air-cored, pulsed, small-size) betatron. The module contains a pulsed power supply system of the betatron electromagnet and its transportation, operation and storage system. The first system includes a 0.7 MJ capacitive storage (a bank of eight capacitors of 300 μF and 24 kV each) and a switching unit. The second system includes a specially equipped twenty-foot cargo container on a semitrailer. The pulsed power supply system is used for producing a unipolar current pulse with the amplitude of 110 kA and the length of 1 ms at the base in the electromagnet windings. The time spread of the system triggering is less than 50 ns. The electric circuit diagram, the power supply system operation procedure together with the results of the module test runs are provided. The oscilloscope patterns of the signals from sensors for monitoring the parameters of the power supply system are presented. The module design can be applied in other mobile electrophysical facilities, taking into account their electric parameters.","PeriodicalId":587,"journal":{"name":"Instruments and Experimental Techniques","volume":"69 3","pages":"472 - 477"},"PeriodicalIF":0.4,"publicationDate":"2026-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148751594","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

Influence of the Operating Conditions of an Avalanche Photodiode on Its Noise Parameters when Operating in a Continuous Mode 雪崩光电二极管连续工作时工作条件对其噪声参数的影响

IF 0.4 4区工程技术

Instruments and Experimental Techniques Pub Date : 2026-06-25 DOI: 10.1134/S0020441226700375

A. A. Anisimov, A. A. Belov, A. S. Kozlov, P. A. Krinskii, A. V. Medvedev, A. V. Petrov, S. V. Rozov, N. A. Ushakov

引用次数: 0

A Prototype of a Mobile System for Laser Engineering of Microbial Systems Based on a Microchip Laser 基于微芯片激光器的微生物系统激光工程移动系统原型

IF 0.4 4区工程技术

Instruments and Experimental Techniques Pub Date : 2026-06-25 DOI: 10.1134/S0020441226700399

D. I. Ashikhmin, N. V. Minaev, V. I. Yusupov

引用次数: 0

Investigation of the Characteristics of the Amplitude−Time Neutron Detector Using Cosmic Rays 用宇宙射线研究振幅-时间中子探测器的特性

IF 0.4 4区工程技术

Instruments and Experimental Techniques Pub Date : 2026-06-25 DOI: 10.1134/S0020441226700387

S. M. Akhmad, V. A. Baskov, A. I. L’vov

引用次数: 0

Simulation of X-Ray Radiation from Astrophysical Sources during Ground-Based Calibration of Space Telescopes 空间望远镜地面标定过程中天体物理源x射线辐射的模拟

IF 0.4 4区工程技术

Instruments and Experimental Techniques Pub Date : 2026-06-25 DOI: 10.1134/S0020441226700508

N. P. Semena, A. Yu. Tkachenko, M. V. Buntov, A. G. Glushenko, A. V. Krivchenko, M. V. Kuznetsova, V. V. Levin, V. A. Lipilin, A. A. Lutovinov, S. V. Mol’kov, V. N. Oleinikov, A. A. Rotin, D. V. Serbinov, A. L. Yascovich

引用次数: 0

X-ray Near Field Speckle Imaging (Review) x射线近场散斑成像（综述）

IF 0.4 4区工程技术

Instruments and Experimental Techniques Pub Date : 2026-06-25 DOI: 10.1134/S0020441226700478

V. V. Lider

引用次数: 0

Measurement of Radioisotope Yields of Iridium 189Ir, 190Ir, and 192Ir and Platinum 188Pt, 189Pt, and 191Pt when a Thick Target Made of Natural Metallic Iridium Is Irridated with 1H Nuclei 用1H核照射天然金属铱厚靶时，铱189Ir、190Ir、192Ir和铂188Pt、189Pt、191Pt放射性同位素产率的测量

IF 0.4 4区工程技术

Instruments and Experimental Techniques Pub Date : 2026-06-25 DOI: 10.1134/S0020441226700533

T. M. Fazliev, R. A. Aliev, V. A. Zagryadsky, E. S. Kormazeva, K. O. Korolev, T. M. Kuznetsova, A. V. Kurochkin, V. I. Novikov, I. N. Popov

{"title":"Measurement of Radioisotope Yields of Iridium 189Ir, 190Ir, and 192Ir and Platinum 188Pt, 189Pt, and 191Pt when a Thick Target Made of Natural Metallic Iridium Is Irridated with 1H Nuclei","authors":"T. M. Fazliev, R. A. Aliev, V. A. Zagryadsky, E. S. Kormazeva, K. O. Korolev, T. M. Kuznetsova, A. V. Kurochkin, V. I. Novikov, I. N. Popov","doi":"10.1134/S0020441226700533","DOIUrl":"10.1134/S0020441226700533","url":null,"abstract":"This work is devoted to measuring the yields of iridium radioisotopes 189Ir, 190Ir, and 192Ir and platinum radioisotopes 188Pt, 189Pt, and 191Pt upon irradiation of a thick target of natural metallic iridium with protons with energies of approximately 30 MeV at the U-150 cyclotron of the Kurchatov Institute. The experimental yields were compared with the corresponding calculated results obtained using data from the TENDL-2023 library. Based on the experimental results obtained in the work on the yield of the target radioisotope 189Ir in the reaction 191Ir(p,3n)189Pt(T1/2 = 10.87 h) → 189Ir and in the direct reaction 191Ir(p,p2n)189Ir, a conclusion was made on the possibility of creating an 189Ir/189mOs isotope generator with an Auger and conversion electrons 189mOs emitter activity at the level of 100 MBq, which will ensure its application in clinical practice.","PeriodicalId":587,"journal":{"name":"Instruments and Experimental Techniques","volume":"69 2","pages":"269 - 272"},"PeriodicalIF":0.4,"publicationDate":"2026-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148306076","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

Hybrid Plasma–GaN Semiconductor Trigger Switch for Ultra-fast High-power Pulsed Applications: a Numerical Study 用于超高速高功率脉冲应用的混合等离子体- gan半导体触发开关：数值研究

IF 0.4 4区工程技术

Instruments and Experimental Techniques Pub Date : 2026-06-25 DOI: 10.1134/S002044122670034X

Erol Can

{"title":"Hybrid Plasma–GaN Semiconductor Trigger Switch for Ultra-fast High-power Pulsed Applications: a Numerical Study","authors":"Erol Can","doi":"10.1134/S002044122670034X","DOIUrl":"10.1134/S002044122670034X","url":null,"abstract":"This study presents a numerical investigation of a Hybrid Plasma–Semiconductor Trigger Switch (HPTS) combining a GaN-based driver with a low-pressure pseudo-spark discharge channel. The objective is to evaluate the potential of integrating deterministic semiconductor switching with high-current plasma conduction for pulsed-power applications. A dynamic simulation model was developed to capture the interaction between time-dependent plasma conductivity, GaN driver dynamics, and circuit parasitics. Simulated results indicate that the HPTS can achieve sub-nanosecond jitter (less than 0.5 ns), bidirectional current conduction up to ±17 kA, and current rise rates of 300–400 A/ns. Performance is shown to improve with lower discharge pressures and faster driver rise. Comparative analysis with reported experimental data for thyratron and pseudo-spark switches demonstrates that the simulated HPTS achieves faster switching, higher timing precision, and improved energy transfer efficiency (96–97%). These findings highlight the potential of HPTS architectures for high-speed pulsed-power systems, while clarifying that the reported results are derived from numerical simulations rather than physical experiments.","PeriodicalId":587,"journal":{"name":"Instruments and Experimental Techniques","volume":"69 2","pages":"311 - 320"},"PeriodicalIF":0.4,"publicationDate":"2026-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148306072","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

Electron Spectrometer ELSPEC for Advanced Space Missions 用于先进空间任务的电子能谱仪

IF 0.4 4区工程技术

Instruments and Experimental Techniques Pub Date : 2026-06-25 DOI: 10.1134/S0020441226700491

A. I. Petukh, D. A. Moiseenko, A. A. Matyukhin, R. N. Zhuravlev, A. Yu. Shestakov, O. L. Vaisberg

引用次数: 0

Efficiency Comparison of Large Scintillation Counters Based on Vacuum and Silicon Photomultipliers 基于真空和硅光电倍增管的大型闪烁计数器的效率比较

IF 0.4 4区工程技术

Instruments and Experimental Techniques Pub Date : 2026-06-25 DOI: 10.1134/S0020441226700405

V. V. Brekhovskikh, N. E. Voronkov, A. M. Gorin, V. A. Dyatchenko, S. V. Evdokimov, A. A. Zaitsev, V. I. Izucheev, A. K. Konoplyannikov, M. V. Medynsky, V. I. Rykalin, S. A. Sadovsky, A. A. Shangaraev

{"title":"Efficiency Comparison of Large Scintillation Counters Based on Vacuum and Silicon Photomultipliers","authors":"V. V. Brekhovskikh, N. E. Voronkov, A. M. Gorin, V. A. Dyatchenko, S. V. Evdokimov, A. A. Zaitsev, V. I. Izucheev, A. K. Konoplyannikov, M. V. Medynsky, V. I. Rykalin, S. A. Sadovsky, A. A. Shangaraev","doi":"10.1134/S0020441226700405","DOIUrl":"10.1134/S0020441226700405","url":null,"abstract":"The paper examines the parameters of plastic scintillation detectors with various systems for output and detection scintillation radiation, designed for detecting gamma rays over a wide energy range. Such detectors, having high light output, find broad application in nuclear physics, high-energy physics, and radiation monitoring systems. However, the detection, for instance, of low-energy gamma radiation with low light output of gamma rays requires low detection thresholds, which leads to an increase noise counts. The paper compares the efficiency of gamma detection by relatively large-sized detectors using vacuum photomultiplier tubes (PMTs) and silicon photomultipliers (SiPMs) as photodetectors. In the latter case, light is extracted from the scintillator using wavelength-shifting fibers. Detectors with such a scintillation-detection system surpass detectors with vacuum PMTs in a number of parameters. Nevertheless, the paper demonstrates that, in the low-energy gamma detection range, which is important for radiation-monitoring systems, detectors based on SiPMs and wavelength-shifting fibers, at an energy of 60 keV for example, are an order of magnitude less efficient in registration compared to detectors with vacuum PMTs. It is shown that this is due to a significant background of the SiPMs dark noise.","PeriodicalId":587,"journal":{"name":"Instruments and Experimental Techniques","volume":"69 2","pages":"290 - 299"},"PeriodicalIF":0.4,"publicationDate":"2026-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148306056","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