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Bulletin of the Lebedev Physics Institute最新文献

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Wavefront Correction on a New Generation Multichannel High-Power Laser Facility 新一代多通道高功率激光设备的波前校正
IF 0.6 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2024-06-17 DOI: 10.3103/S106833562460058X
S. A. Belkov, B. G. Zimalin, P. Yu. Kruglov, A. O. Lipatov, A. N. Manachinskii, A. V. Yakhlov
{"title":"Wavefront Correction on a New Generation Multichannel High-Power Laser Facility","authors":"S. A. Belkov,&nbsp;B. G. Zimalin,&nbsp;P. Yu. Kruglov,&nbsp;A. O. Lipatov,&nbsp;A. N. Manachinskii,&nbsp;A. V. Yakhlov","doi":"10.3103/S106833562460058X","DOIUrl":"10.3103/S106833562460058X","url":null,"abstract":"<p>We report an investigation of an adaptive system designed to correct the wavefront of laser beams up to 400 × 400 mm in size using a new generation multichannel laser facility. An algorithm is developed for the operation of the adaptive system to determine and correct wavefront aberrations of the laser beam in the amplification path without and with pumping slabs based on neodymium phosphate glass. Characteristic thermal aberrations of the amplification path that occur under slabs pumping are presented. A possibility of compensating for thermal aberrations in the amplifier path and the formation of a laser beam with an energy of up to 25 kJ and wavefront parameters of PV ≈ 1.4 μm and RMS ≈ 0.2 μm are experimentally demonstrated.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141515747","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Implementation of the Regeneration Regime in the Process of Generating Extremely Short Pulses in an Nd3+: YAG Laser with a Passive Shutter 在使用无源快门的 Nd3+：YAG 激光器产生极短脉冲的过程中实现再生机制
IF 0.6 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2024-05-24 DOI: 10.3103/S1068335623601905
V. A. Babenko, A. A. Sychev
{"title":"Implementation of the Regeneration Regime in the Process of Generating Extremely Short Pulses in an Nd3+: YAG Laser with a Passive Shutter","authors":"V. A. Babenko,&nbsp;A. A. Sychev","doi":"10.3103/S1068335623601905","DOIUrl":"10.3103/S1068335623601905","url":null,"abstract":"<p>We report experimental results of using the resonator-loss-unloading method to implement relaxation properties of a passive shutter in an Nd<sup>3+</sup>:YAG laser with the aim of producing extremely short picosecond pulses. The application of a fast relaxing passive shutter based on a technologically advanced new pyrillocyanine dye and the use of the unloading method make it possible to obtain highly reproducible, ultrashort 7-ps light pulses from this laser.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141149389","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Quantitative Determination of a Contrast Agent by Multispiral Computed Tomography and Targeted Absorption Spectroscopy in the K-Jump Region of X-Ray Photoabsorption 利用多螺旋计算机断层扫描和靶向吸收光谱在 X 射线光吸收 K 跳变区定量测定一种造影剂
IF 0.6 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2024-05-24 DOI: 10.3103/S1068335623602303
A. G. Turyanskiy, T. A. Akhadov, Kyaw Zaw Lin, V. M. Senkov, M. Z. Ziyatdinova, M. V. Ublinskii, D. M. Dmitrienko, M. Yu. Kupriyanov, M. M. Aksenova
{"title":"Quantitative Determination of a Contrast Agent by Multispiral Computed Tomography and Targeted Absorption Spectroscopy in the K-Jump Region of X-Ray Photoabsorption","authors":"A. G. Turyanskiy,&nbsp;T. A. Akhadov,&nbsp;Kyaw Zaw Lin,&nbsp;V. M. Senkov,&nbsp;M. Z. Ziyatdinova,&nbsp;M. V. Ublinskii,&nbsp;D. M. Dmitrienko,&nbsp;M. Yu. Kupriyanov,&nbsp;M. M. Aksenova","doi":"10.3103/S1068335623602303","DOIUrl":"10.3103/S1068335623602303","url":null,"abstract":"<p>We demonstrate a possibility of a radical reduction in an effective radiation dose when monitoring the content of a contrast agent in an object with X-ray absorption spectroscopy (XAS) using survey data from multispiral computed tomography (CT). A directional beam passes through the region of interest, the 3D coordinates of which are determined with CT, and the transmission spectrum is recorded in the range of the <i>K</i>-jump in the X-ray photoabsorption of the contrast agent. The unambiguity of the obtained results is confirmed by independent measurements of the xenon content in the phantom using CT and XAS methods, as well as by direct manometric control of gas volumes.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141149462","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Simple Model for the Induction Current Distribution in a Thin Superconducting Film 超导薄膜中感应电流分布的简单模型
IF 0.6 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2024-05-24 DOI: 10.3103/S1068335623600997
S. Yu. Gavrilkin, A. Yu. Tsvetkov
{"title":"A Simple Model for the Induction Current Distribution in a Thin Superconducting Film","authors":"S. Yu. Gavrilkin,&nbsp;A. Yu. Tsvetkov","doi":"10.3103/S1068335623600997","DOIUrl":"10.3103/S1068335623600997","url":null,"abstract":"<p>A simple model for calculating the distribution of currents induced in a thin superconducting film by local AC magnetic field of a measuring coil is presented. The spatial distribution of the peak values of the current density in a sample is obtained, and the spectral composition of the response signal is considered depending on the amplitude of the drive current. The applicability of the model to real samples is presented.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141149386","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Ionization Energy of Reaction Products in an Ethanol–Carbon Monoxide System in Interstellar Ices 星际冰中乙醇-一氧化碳体系反应产物的电离能
IF 0.6 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2024-05-24 DOI: 10.3103/S1068335623601826
O. V. Kuznetsov, M. M. Evseev, E. A. Batrakova, I. O. Antonov
{"title":"Ionization Energy of Reaction Products in an Ethanol–Carbon Monoxide System in Interstellar Ices","authors":"O. V. Kuznetsov,&nbsp;M. M. Evseev,&nbsp;E. A. Batrakova,&nbsp;I. O. Antonov","doi":"10.3103/S1068335623601826","DOIUrl":"10.3103/S1068335623601826","url":null,"abstract":"<p>Ionization energies are calculated for complex organic molecules formed in the nonequilibrium ethanol–carbon monoxide reaction in interstellar ices. The obtained ionization energies allow molecular structures of C<sub>3</sub>H<sub>6</sub>O<sub>2</sub> isomers to be determined in the laboratory conditions. Out of seven isomers in question, only ethyl formate is shown to be stable with respect to photoionization by Lyman-α photons (10.2 eV) in the interstellar medium.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141149466","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Luminescent Properties of the Jahn‒Teller Center in Carbon-Doped Tin Disulfide 掺碳二硫化锡中 Jahn-Teller 中心的发光特性
IF 0.6 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2024-05-24 DOI: 10.3103/S1068335623602182
S. N. Nikolaev, V. S. Krivobok, M. A. Chernopitssky, E. A. Ekimov, M. V. Kondrin
{"title":"Luminescent Properties of the Jahn‒Teller Center in Carbon-Doped Tin Disulfide","authors":"S. N. Nikolaev,&nbsp;V. S. Krivobok,&nbsp;M. A. Chernopitssky,&nbsp;E. A. Ekimov,&nbsp;M. V. Kondrin","doi":"10.3103/S1068335623602182","DOIUrl":"10.3103/S1068335623602182","url":null,"abstract":"<p>We report an investigation of the C<sub>Sn</sub>-center luminescent properties in the 2H SnS<sub>2</sub> polytype over a wide temperature range. It is shown that in the temperature range from 5 to 200 K, the emission spectrum can be described in terms of the interaction of an electronic transition in the region of 1.4 eV with a localized phonon mode, whose frequency is 270 cm<sup>‒1</sup>. At temperatures exceeding 200 K, structural rearrangement of the center is observed, which manifests itself in qualitative changes in the emission spectrum and luminescence quantum yield.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141149393","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Determination of the Parameters of Binary Supermassive Black Holes and the Level of Their Gravitational Radiation 双超大质量黑洞参数及其引力辐射水平的测定
IF 0.6 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2024-05-24 DOI: 10.3103/S1068335623600705
A. E. Volvach, L. N. Volvach, M. G. Larionov, V. B. Orlenson, S. V. Malashevich
{"title":"Determination of the Parameters of Binary Supermassive Black Holes and the Level of Their Gravitational Radiation","authors":"A. E. Volvach,&nbsp;L. N. Volvach,&nbsp;M. G. Larionov,&nbsp;V. B. Orlenson,&nbsp;S. V. Malashevich","doi":"10.3103/S1068335623600705","DOIUrl":"10.3103/S1068335623600705","url":null,"abstract":"<p>We report new data on AO 0235+164, obtained under the program of long-term multifrequency monitoring of active galactic nuclei (AGNs). A model is proposed for finding the parameters of close binary systems of supermassive black holes (SMBHs) by using only observational data in the radio range. The methodology for determining the physical characteristics of the SMBHs includes harmonic and wavelet analyses as well as the assessment of the masses of the satellites and their orbital characteristics. It is shown that AO 0235+164 can be a very massive and close binary system containing companions with similar masses. The presence of an orbital period and a multiple half-period indicates the absence of noticeable eccentricity in the system. Estimates show that, along with such AGNs as 3C 454.3 and OJ 287, AO 0235+164 can be a high-power gravitational wave (GW) emitter accessible for detection by gravitational wave detectors such as the International Pulsar Timing Array (IPTA).</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141149377","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Application of Conductive Coatings on a Flexible Polymer Substrate via Laser-Induced Forward Transfer 通过激光诱导正向转移在柔性聚合物基底上应用导电涂层
IF 0.6 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2024-05-24 DOI: 10.3103/S1068335623602315
E. V. Ulturgasheva, A. A. Nastulyavichus, S. I. Kudryashov, Pham Van Duong, Pham Hong Minh
{"title":"Application of Conductive Coatings on a Flexible Polymer Substrate via Laser-Induced Forward Transfer","authors":"E. V. Ulturgasheva,&nbsp;A. A. Nastulyavichus,&nbsp;S. I. Kudryashov,&nbsp;Pham Van Duong,&nbsp;Pham Hong Minh","doi":"10.3103/S1068335623602315","DOIUrl":"10.3103/S1068335623602315","url":null,"abstract":"<p>The application of conductive silver elements to polyethylene terephthalate polymer substrates using the laser-induced forward transfer method is considered. By varying parameters such as the energy density of laser radiation and the scanning speed, the optimal regime of applying conductive elements in one stage was found. The maximum value of the conductivity was 0.62 kS/cm. This method has potential applications in various fields, including electronics and sensor technologies.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141149390","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Pressure Pulses in Metal under Picosecond Laser Ablation 皮秒激光烧蚀下金属中的压力脉冲
IF 0.6 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2024-04-21 DOI: 10.3103/S1068335623602455
S. I. Kudryashov, P. A. Pivovarov, V. I. Priklonskii, A. A. Samokhin, S. Ph. Umanskaya, N. V. Tcherniega
{"title":"Pressure Pulses in Metal under Picosecond Laser Ablation","authors":"S. I. Kudryashov,&nbsp;P. A. Pivovarov,&nbsp;V. I. Priklonskii,&nbsp;A. A. Samokhin,&nbsp;S. Ph. Umanskaya,&nbsp;N. V. Tcherniega","doi":"10.3103/S1068335623602455","DOIUrl":"10.3103/S1068335623602455","url":null,"abstract":"<p>The behavior of pressure pulses excited in a metal ablated with picosecond laser pulses is analyzed. It is shown that with this effect, the contribution from the thermoacoustic mechanism can exceed the evaporation pressure even when a stationary evaporation regime is established. This pressure behavior differs markedly from that characteristic of the nanosecond regime and is consistent with the obtained experimental data on the monitoring of the recoil pressure under picosecond laser irradiation of lead and aluminum.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140627948","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Measuring the Sun’s Angular Momentum Using the Gravitomagnetic Frequency Shift Effect 利用重力磁频移效应测量太阳角动量
IF 0.6 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2024-04-21 DOI: 10.3103/S1068335623601887
S. V. Pilipenko, M. V. Zakhvatkin, D. A. Litvinov, A. I. Filetkin
{"title":"Measuring the Sun’s Angular Momentum Using the Gravitomagnetic Frequency Shift Effect","authors":"S. V. Pilipenko,&nbsp;M. V. Zakhvatkin,&nbsp;D. A. Litvinov,&nbsp;A. I. Filetkin","doi":"10.3103/S1068335623601887","DOIUrl":"10.3103/S1068335623601887","url":null,"abstract":"<p>We investigate the prospects for experimentally determining the Sun’s angular momentum by measuring the gravitomagnetic frequency shift of signals exchanged by two satellites in heliocentric orbits. When using modern optical clocks with stability of ∼10<sup>–18</sup>, the accuracy of such an experiment can reach 5% after 5 years of data accumulation. This is comparable to the accuracy of determining the Sun’s angular momentum using techniques of helioseismology.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140627951","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","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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