Pub Date : 2024-06-28DOI: 10.1134/s0020441224700301
L. Yu. Yarullin, V. F. Khairutdinov, F. R. Gabitov, I. Z. Salikhov, L. Yu. Sabirova, I. Sh. Khabriev, I. M. Abdulagatov
Abstract
An experimental setup was created to measure the solubility of substances in supercritical carbon dioxide by a dynamic method, including the possibility of adding a cosolvent to the main solvent: CO2. A new technique has been developed for determining the mass amount of supercritical carbon dioxide that has passed during the experiment, which is important in determining solubility. Experimental data on the solubility of diphenyl in supercritical carbon dioxide are obtained, which are in good agreement with the literature data, at various state parameters: temperature and pressure. The experimental setup will make it possible to obtain new experimental data in the future on the solubility of a wide range of substances in supercritical carbon dioxide as well as in supercritical carbon dioxide with various organic cosolvents.
{"title":"Experimental Setup for Measuring the Solubility of Substances in Supercritical Carbon Dioxide by the Dynamic Method","authors":"L. Yu. Yarullin, V. F. Khairutdinov, F. R. Gabitov, I. Z. Salikhov, L. Yu. Sabirova, I. Sh. Khabriev, I. M. Abdulagatov","doi":"10.1134/s0020441224700301","DOIUrl":"https://doi.org/10.1134/s0020441224700301","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>An experimental setup was created to measure the solubility of substances in supercritical carbon dioxide by a dynamic method, including the possibility of adding a cosolvent to the main solvent: CO<sub>2</sub>. A new technique has been developed for determining the mass amount of supercritical carbon dioxide that has passed during the experiment, which is important in determining solubility. Experimental data on the solubility of diphenyl in supercritical carbon dioxide are obtained, which are in good agreement with the literature data, at various state parameters: temperature and pressure. The experimental setup will make it possible to obtain new experimental data in the future on the solubility of a wide range of substances in supercritical carbon dioxide as well as in supercritical carbon dioxide with various organic cosolvents.</p>","PeriodicalId":587,"journal":{"name":"Instruments and Experimental Techniques","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141525124","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}
Pub Date : 2024-06-28DOI: 10.1134/s0020441224700027
D. Aznabaev, T. Isataev, S. M. Lukyanov, V. I. Smirnov, S. S. Stukalov, A. N. Solodov
Abstract
This paper presents the results of measurements of fission fragments using a time-of-flight system with a position-sensitive detector based on microchannel plates designed to measure the masses of nuclear reaction products at the MAVR facility. The advantage of such MCPs is their high positional sensitivity and high efficiency of registration of heavy charged particles with low energy. The paper presents a technical description of the fission fragments registration system and the results of measuring the parameters of a position-sensitive detector based on large-area microchannel plates (40 × 60 mm2) obtained by measuring 252Cf spontaneous fission fragments. The coordinate resolution along the X and Y axes was determined when fission fragments were registered in the 14N+192Au reaction at the MAVR installation. The time resolution of the PSD was obtained by registering the time of flight of alpha particles emitted by the radioactive source 226Ra.
{"title":"Position Sensitive Detector Based on Microchannel Plates for Measuring the Characteristics of Fission Fragments at the MAVR Facility","authors":"D. Aznabaev, T. Isataev, S. M. Lukyanov, V. I. Smirnov, S. S. Stukalov, A. N. Solodov","doi":"10.1134/s0020441224700027","DOIUrl":"https://doi.org/10.1134/s0020441224700027","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>This paper presents the results of measurements of fission fragments using a time-of-flight system with a position-sensitive detector based on microchannel plates designed to measure the masses of nuclear reaction products at the MAVR facility. The advantage of such MCPs is their high positional sensitivity and high efficiency of registration of heavy charged particles with low energy. The paper presents a technical description of the fission fragments registration system and the results of measuring the parameters of a position-sensitive detector based on large-area microchannel plates (40 × 60 mm<sup>2</sup>) obtained by measuring <sup>252</sup>Cf spontaneous fission fragments. The coordinate resolution along the <i>X</i> and <i>Y</i> axes was determined when fission fragments were registered in the <sup>14</sup>N+<sup>192</sup>Au reaction at the MAVR installation. The time resolution of the PSD was obtained by registering the time of flight of alpha particles emitted by the radioactive source <sup>226</sup>Ra.</p>","PeriodicalId":587,"journal":{"name":"Instruments and Experimental Techniques","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141525106","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}
Pub Date : 2024-06-28DOI: 10.1134/s002044122470012x
V. E. Guseva, M. S. Mikhailenko, A. N. Nechai, A. A. Perekalov, N. N. Salashchenko, N. I. Chkhalo
Abstract—
A stand is described that is designed to study the emission properties of laser plasma in the extreme ultraviolet range (EUV) formed on liquid jet targets. To form a jet target, a pulse valve and capillaries of various diameters are used. A Nd:YAG laser is used (with a wavelength of 1064 nm, a pulse duration of 11 ns, a frequency of up to 10 Hz, and a pulse energy of 500 mJ) to excite laser plasma. To investigate the emission spectra, a mirror X-ray spectrometer calibrated in absolute units, an Aurora 4000 visible-range spectrometer, and a microscope operating in the EUV range are used. Photographing of the formed liquid jets is also provided. The design of the stand and its main parameters are presented. The results of the first experiments to study the processes of liquid outflow from various nozzles into vacuum are also presented.
{"title":"A Stand for Investigating Properties of Laser Plasma Formed on Liquid-Jet Targets","authors":"V. E. Guseva, M. S. Mikhailenko, A. N. Nechai, A. A. Perekalov, N. N. Salashchenko, N. I. Chkhalo","doi":"10.1134/s002044122470012x","DOIUrl":"https://doi.org/10.1134/s002044122470012x","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract—</h3><p>A stand is described that is designed to study the emission properties of laser plasma in the extreme ultraviolet range (EUV) formed on liquid jet targets. To form a jet target, a pulse valve and capillaries of various diameters are used. A Nd:YAG laser is used (with a wavelength of 1064 nm, a pulse duration of 11 ns, a frequency of up to 10 Hz, and a pulse energy of 500 mJ) to excite laser plasma. To investigate the emission spectra, a mirror X-ray spectrometer calibrated in absolute units, an Aurora 4000 visible-range spectrometer, and a microscope operating in the EUV range are used. Photographing of the formed liquid jets is also provided. The design of the stand and its main parameters are presented. The results of the first experiments to study the processes of liquid outflow from various nozzles into vacuum are also presented.</p>","PeriodicalId":587,"journal":{"name":"Instruments and Experimental Techniques","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141525112","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}
Pub Date : 2024-06-28DOI: 10.1134/s0020441224700106
P. A. Volchugov, I. I. Astapov, P. A. Bez’’yazykov, E. A. Bonvech, A. N. Borodin, N. M. Budnev, A. V. Bulan, A. Vaidyanatan, N. V. Volkov, D. M. Voronin, A. R. Gafarov, E. O. Gres’, O. A. Gres’, T. I. Gres’, O. G. Grishin, A. Yu. Garmash, V. M. Grebenyuk, A. A. Grinyuk, A. N. Dyachok, D. P. Zhurov, A. V. Zagorodnikov, A. D. Ivanova, A. L. Ivanova, M. A. Ilyushin, N. N. Kalmykov, V. V. Kindin, S. N. Kiryukhin, R. P. Kokoulin, N. I. Kolosov, K. G. Kompaniets, E. E. Korosteleva, V. A. Kozhin, E. A. Kravchenko, A. P. Kryukov, L. A. Kuz’michev, A. K’yavassa, A. A. Lagutin, M. V. Lavrova, Yu. E. Lemeshev, B. K. Lubsandorzhiev, N. B. Lubsandorzhiev, S. D. Malakhov, R. R. Mirgazov, R. D. Monkhoev, E. A. Okuneva, E. A. Osipova, A. D. Panov, A. L. Pakhorukov, A. Pan, L. V. Pan’kov, A. A. Petrukhin, D. A. Podgrudkov, E. G. Popova, E. B. Postnikov, V. V. Prosin, V. S. Ptuskin, A. A. Pushnin, A. Yu. Razumov, R. I. Raikin, G. I. Rubtsov, E. V. Ryabov, V. S. Samoliga, I. Satyshev, L. G. Sve..
Abstract—
The paper is devoted to the modeling and analysis of data detected by the TAIGA-IACT installation in the stereo mode. Five Imaging Atmospheric Cherenkov Telescopes (IACT) with a viewing angle of 9.6° are expected to be included in the installation. Today there are three telescopes spaced far apart (from 320 to 500 m) in the installation. The effective area of the installation is as large as 0.6 km2; therefore, it is possible to conduct statistically significant measurements of weak γ-ray sources in the energy range above 10 TeV over a reasonable observation time (300–400 h). The Monte Carlo procedure for simulating the hadrons and γ-rays detected by the telescopes is described as is the procedure for reconstructing the parameters of extensive air showers, such as the arrival direction of an event, the axis position, the depth of the maximum of shower development (Xmax), and the primary-particle energy. In order to solve the problem of γ-hadron separation, the criteria for selecting γ-rays detected in the stereo mode have been optimized and the effective area of the installation has been calculated.
{"title":"γ-Ray Detection with the TAIGA-IACT Installation in the Stereo Mode of Observation","authors":"P. A. Volchugov, I. I. Astapov, P. A. Bez’’yazykov, E. A. Bonvech, A. N. Borodin, N. M. Budnev, A. V. Bulan, A. Vaidyanatan, N. V. Volkov, D. M. Voronin, A. R. Gafarov, E. O. Gres’, O. A. Gres’, T. I. Gres’, O. G. Grishin, A. Yu. Garmash, V. M. Grebenyuk, A. A. Grinyuk, A. N. Dyachok, D. P. Zhurov, A. V. Zagorodnikov, A. D. Ivanova, A. L. Ivanova, M. A. Ilyushin, N. N. Kalmykov, V. V. Kindin, S. N. Kiryukhin, R. P. Kokoulin, N. I. Kolosov, K. G. Kompaniets, E. E. Korosteleva, V. A. Kozhin, E. A. Kravchenko, A. P. Kryukov, L. A. Kuz’michev, A. K’yavassa, A. A. Lagutin, M. V. Lavrova, Yu. E. Lemeshev, B. K. Lubsandorzhiev, N. B. Lubsandorzhiev, S. D. Malakhov, R. R. Mirgazov, R. D. Monkhoev, E. A. Okuneva, E. A. Osipova, A. D. Panov, A. L. Pakhorukov, A. Pan, L. V. Pan’kov, A. A. Petrukhin, D. A. Podgrudkov, E. G. Popova, E. B. Postnikov, V. V. Prosin, V. S. Ptuskin, A. A. Pushnin, A. Yu. Razumov, R. I. Raikin, G. I. Rubtsov, E. V. Ryabov, V. S. Samoliga, I. Satyshev, L. G. Sve..","doi":"10.1134/s0020441224700106","DOIUrl":"https://doi.org/10.1134/s0020441224700106","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract—</h3><p>The paper is devoted to the modeling and analysis of data detected by the TAIGA-IACT installation in the stereo mode. Five Imaging Atmospheric Cherenkov Telescopes (IACT) with a viewing angle of 9.6° are expected to be included in the installation. Today there are three telescopes spaced far apart (from 320 to 500 m) in the installation. The effective area of the installation is as large as 0.6 km<sup>2</sup>; therefore, it is possible to conduct statistically significant measurements of weak γ-ray sources in the energy range above 10 TeV over a reasonable observation time (300–400 h). The Monte Carlo procedure for simulating the hadrons and γ-rays detected by the telescopes is described as is the procedure for reconstructing the parameters of extensive air showers, such as the arrival direction of an event, the axis position, the depth of the maximum of shower development (<i>X</i><sub>max</sub>), and the primary-particle energy. In order to solve the problem of γ-hadron separation, the criteria for selecting γ-rays detected in the stereo mode have been optimized and the effective area of the installation has been calculated.</p>","PeriodicalId":587,"journal":{"name":"Instruments and Experimental Techniques","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141525121","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}
Pub Date : 2024-06-28DOI: 10.1134/s002044122470026x
D. A. Suslov, P. M. Vetoshko, A. V. Mashirov, S. N. Polulyakh, V. N. Berzhansky, V. G. Shavrov
Abstract
For the purpose of studying the noncollinear phase in ferrimagnetic films with a magnetic compensation point, a technique has been developed and an experimental setup has been fabricated for observing phase transitions in ferrimagnetic films using magneto-optical contrast. The unique feature of the setup with a superconducting magnet is the presence of a controllable lateral temperature gradient that allows simultaneous observation of various phase states in ferrimagnetic films in the range of magnetic fields and temperatures using the magneto-optical method. Using the developed setup, zones of different magnetic ordering were observed for rare earth garnet ferrites in the range of magnetic fields from 0 to 10 T and temperatures from 150 to 400 K. The lateral temperature gradient in the film plane could be varied from 0 to 12 K. Different phases of the first-order spin-reorientation transition were observed in films with a composition of (BiYGd)3(FeGa)5O12 using this technique.
摘要 为研究具有磁补偿点的铁磁性薄膜中的非共轭相，我们开发了一种技术，并制作了一套实验装置，用于利用磁光对比观察铁磁性薄膜中的相变。这种带有超导磁体的装置的独特之处在于存在一个可控的横向温度梯度，可利用磁光方法同时观测铁磁性薄膜在磁场和温度范围内的各种相态。利用所开发的装置，可以在 0 到 10 T 的磁场范围和 150 到 400 K 的温度范围内观察到稀土石榴石铁氧体的不同磁有序区。
{"title":"Magneto-Optical Method for Observing the Phases of Magnetic Ordering in Rare Earth Ferrite Films Using a Compensating Point","authors":"D. A. Suslov, P. M. Vetoshko, A. V. Mashirov, S. N. Polulyakh, V. N. Berzhansky, V. G. Shavrov","doi":"10.1134/s002044122470026x","DOIUrl":"https://doi.org/10.1134/s002044122470026x","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>For the purpose of studying the noncollinear phase in ferrimagnetic films with a magnetic compensation point, a technique has been developed and an experimental setup has been fabricated for observing phase transitions in ferrimagnetic films using magneto-optical contrast. The unique feature of the setup with a superconducting magnet is the presence of a controllable lateral temperature gradient that allows simultaneous observation of various phase states in ferrimagnetic films in the range of magnetic fields and temperatures using the magneto-optical method. Using the developed setup, zones of different magnetic ordering were observed for rare earth garnet ferrites in the range of magnetic fields from 0 to 10 T and temperatures from 150 to 400 K. The lateral temperature gradient in the film plane could be varied from 0 to 12 K. Different phases of the first-order spin-reorientation transition were observed in films with a composition of (BiYGd)<sub>3</sub>(FeGa)<sub>5</sub>O<sub>12</sub> using this technique.</p>","PeriodicalId":587,"journal":{"name":"Instruments and Experimental Techniques","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141525125","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}
Pub Date : 2024-06-28DOI: 10.1134/s0020441224700179
V. M. Kotov, S. V. Averin, A. A. Zenkina, A. S. Belousova
Abstract
The polarization properties of a two-channel spatial AO filter based on diffraction into two symmetric Bragg orders have been studied. A regime is demonstrated where during Fourier processing of an image, the contours in different channels are formed in different polarizations and at different acoustic frequencies. This regime was confirmed experimentally on the basis of optical Fourier processing of an image transmitted by radiation with an optical wavelength of 0.63 μm. As a spatial frequency filter, an AO cell manufactured of paratellurite was used. This made it possible to form the image contour in one channel at a sound frequency of 34 MHz and in another channel at a frequency of 42 MHz.
{"title":"Polarization Features of a Spatial AO Filter Based on Diffraction in Two Symmetric Orders","authors":"V. M. Kotov, S. V. Averin, A. A. Zenkina, A. S. Belousova","doi":"10.1134/s0020441224700179","DOIUrl":"https://doi.org/10.1134/s0020441224700179","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The polarization properties of a two-channel spatial AO filter based on diffraction into two symmetric Bragg orders have been studied. A regime is demonstrated where during Fourier processing of an image, the contours in different channels are formed in different polarizations and at different acoustic frequencies. This regime was confirmed experimentally on the basis of optical Fourier processing of an image transmitted by radiation with an optical wavelength of 0.63 μm. As a spatial frequency filter, an AO cell manufactured of paratellurite was used. This made it possible to form the image contour in one channel at a sound frequency of 34 MHz and in another channel at a frequency of 42 MHz.</p>","PeriodicalId":587,"journal":{"name":"Instruments and Experimental Techniques","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141525115","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}
Pub Date : 2024-06-28DOI: 10.1134/s0020441224700234
S. A. Radzhapov, K. M. Nurboev, F. G. Mullagalieva, B. S. Radzhapov, M. A. Zufarov
Abstract
The article presents the results of the development of a universal radiometric device for measuring the activities of alpha, beta, and gamma radiation and the volumetric activity of radon in soil, air, and water. The structure of a multichannel radiometric device with software, a diagram of a microcontroller unit with a signal conditioner, and the operation of electronic units are presented. The data of monitoring the volumetric activity of radon alpha particles and the activities of beta and gamma radiation in the soil air are given. The monitoring results showed that activities vary depending on temperature, humidity, and time of day. The device is compact, mobile, and universal and can be used both stationary and in the field. The developed RMI V1.7 program allows for long-term, real-time monitoring, and all measurements are displayed on a computer monitor.
{"title":"Development of a Multichannel Radiometer Based on Silicon Detectors for Measurement of Alpha, Beta, and Gamma Radiation of Natural Isotopes","authors":"S. A. Radzhapov, K. M. Nurboev, F. G. Mullagalieva, B. S. Radzhapov, M. A. Zufarov","doi":"10.1134/s0020441224700234","DOIUrl":"https://doi.org/10.1134/s0020441224700234","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The article presents the results of the development of a universal radiometric device for measuring the activities of alpha, beta, and gamma radiation and the volumetric activity of radon in soil, air, and water. The structure of a multichannel radiometric device with software, a diagram of a microcontroller unit with a signal conditioner, and the operation of electronic units are presented. The data of monitoring the volumetric activity of radon alpha particles and the activities of beta and gamma radiation in the soil air are given. The monitoring results showed that activities vary depending on temperature, humidity, and time of day. The device is compact, mobile, and universal and can be used both stationary and in the field. The developed RMI V1.7 program allows for long-term, real-time monitoring, and all measurements are displayed on a computer monitor.</p>","PeriodicalId":587,"journal":{"name":"Instruments and Experimental Techniques","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141525118","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}
Pub Date : 2024-06-28DOI: 10.1134/s0020441224700118
T. I. Glushkova, L. M. Kochenda, P. A. Kravtsov, A. A. Fetisov
Abstract
The operating principle of a gas installation designed to produce three-component gas mixtures by using static mixing, with the function of separating and purifying helium-3 gas from a CF4 + 3He mixture is described. The process of preparing a three-component gas mixture for further use in single-chamber neutron detectors, as well as the process of helium-3 separation from a mixture of CF4 + 3He and its purification for use in helium neutron counters and for refilling helium neutron detectors, is considered.
{"title":"Universal Gas Installation with the Function of Recovering and Cleaning Helium-3","authors":"T. I. Glushkova, L. M. Kochenda, P. A. Kravtsov, A. A. Fetisov","doi":"10.1134/s0020441224700118","DOIUrl":"https://doi.org/10.1134/s0020441224700118","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The operating principle of a gas installation designed to produce three-component gas mixtures by using static mixing, with the function of separating and purifying helium-3 gas from a CF<sub>4</sub> + <sup>3</sup>He mixture is described. The process of preparing a three-component gas mixture for further use in single-chamber neutron detectors, as well as the process of helium-3 separation from a mixture of CF<sub>4</sub> + <sup>3</sup>He and its purification for use in helium neutron counters and for refilling helium neutron detectors, is considered.</p>","PeriodicalId":587,"journal":{"name":"Instruments and Experimental Techniques","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141525123","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}
Pub Date : 2024-06-28DOI: 10.1134/s0020441224700295
E. A. Usenko
Abstract
The time over threshold (TOT) method that uses a pulse sine shaper, which is based on the mathematical function of the raised cosine (FRC), is described. The FRC has an important property for the TOT method—the formation of a smooth pulse with the variability of both the smoothing coefficient and the response time. In this case, the shape of the FRC pulse is independent of the input pulse action within a given time range. Thus, on the basis of the FRC, it was possible to create a pulse sine shaper with a preset time response, which provided an unambiguous dependence of the TOT-pulse duration on the input charge, and to improve the accuracy characteristics due to optimal spectral filtering in the FRC. A pulse sine shaper based on the FRC was successfully used in the reading systems of the HADES (GSI, Darmstadt, Germany) and BM&N (JINR, Dubna) experiments. The total number of reading channels was more than 5000; the method has an error of ~0.3%.
摘要 介绍了使用脉冲正弦整形器的时间超过阈值（TOT）方法，该方法基于数学函数凸起余弦（FRC）。FRC 对于 TOT 方法有一个重要的特性--形成一个平滑脉冲，平滑系数和响应时间都具有可变性。在这种情况下，FRC 脉冲的形状与给定时间范围内的输入脉冲作用无关。因此，在 FRC 的基础上，可以创建一个具有预设时间响应的正弦波脉冲整形器，该整形器提供了 TOT 脉冲持续时间对输入电荷的明确依赖性，并通过 FRC 中的最佳频谱滤波改善了精度特性。基于 FRC 的脉冲正弦整形器已成功用于 HADES（德国达姆施塔特，GSI）和 BM&N（杜布纳，JINR）实验的读取系统。读取通道总数超过 5000 个；该方法的误差约为 0.3%。
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Pub Date : 2024-06-28DOI: 10.1134/s0020441224700076
I. A. Busygina, I. G. Grigoryeva, P. V. Moskvich, P. Yu. Naumov, G. Kh. Salakhutdinov
Abstract—
A high-intensity pulsed X-ray spectrometer based on thermoluminescent detectors has been developed and created. The characteristics of various thermoluminescent detectors are given. An improved algorithm for measuring the spectrum of pulsed X-ray radiation is described. Experimental results of the study of the X-ray spectrum of plasma objects are presented.
摘要 已开发并创建了基于热释光探测器的高强度脉冲 X 射线光谱仪。文中介绍了各种热释光探测器的特性。介绍了测量脉冲 X 射线辐射光谱的改进算法。介绍了研究等离子体物体 X 射线光谱的实验结果。
{"title":"Application of Thermoluminescent Detectors for Pulsed X-Ray Spectrometry","authors":"I. A. Busygina, I. G. Grigoryeva, P. V. Moskvich, P. Yu. Naumov, G. Kh. Salakhutdinov","doi":"10.1134/s0020441224700076","DOIUrl":"https://doi.org/10.1134/s0020441224700076","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract—</h3><p>A high-intensity pulsed X-ray spectrometer based on thermoluminescent detectors has been developed and created. The characteristics of various thermoluminescent detectors are given. An improved algorithm for measuring the spectrum of pulsed X-ray radiation is described. Experimental results of the study of the X-ray spectrum of plasma objects are presented.</p>","PeriodicalId":587,"journal":{"name":"Instruments and Experimental Techniques","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141525116","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}
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