Pub Date : 2024-06-25DOI: 10.3103/s1068335624600281
M. Yu. Azarkin, M. R. Kirakosyan, O. V. Meshkov, V. A. Ryabov, A. L. Shepetov
Abstract
This paper investigates the performance of the underground detector at the Tien Shan High-Altitude Station for the registration of cosmic muons produced in extensive air showers (EAS) using a simulation with GEANT4. The capability of reconstructing the energy spectrum of EAS muons based on the multiplicity of neutrons produced in interactions of the muons with the detector material and measured with neutron counters was analyzed. The best technique for the reconstruction of the muon energy spectrum is recommended according to the simulation results.
摘要 本文利用GEANT4进行模拟，研究了天山高空站地下探测器的性能，以登记在大范围空气淋雨（EAS）中产生的宇宙μ介子。分析了根据μ介子与探测器材料相互作用时产生的中子的倍率（用中子计数器测量）重建 EAS μ介子能谱的能力。根据模拟结果，推荐了重建μ介子能谱的最佳技术。
{"title":"Reconstructing the Energy Spectrum of Cosmic Muons Measured with the Underground Detector of the Tien Shan High-Altitude Station","authors":"M. Yu. Azarkin, M. R. Kirakosyan, O. V. Meshkov, V. A. Ryabov, A. L. Shepetov","doi":"10.3103/s1068335624600281","DOIUrl":"https://doi.org/10.3103/s1068335624600281","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>This paper investigates the performance of the underground detector at the Tien Shan High-Altitude Station for the registration of cosmic muons produced in extensive air showers (EAS) using a simulation with GEANT4. The capability of reconstructing the energy spectrum of EAS muons based on the multiplicity of neutrons produced in interactions of the muons with the detector material and measured with neutron counters was analyzed. The best technique for the reconstruction of the muon energy spectrum is recommended according to the simulation results.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2024-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141515681","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}
Pub Date : 2024-06-25DOI: 10.3103/s1068335624600232
A. V. Osadchenko, D. S. Daibagya, I. A. Zakharchuk, A. S. Selyukov, S. A. Ambrozevich, A. V. Ryzhov, N. V. Pevtsov, D. N. Pevtsov
Abstract
The paper examines the effect of introducing a chlorine atom into the coordination sphere of a rare earth ion for two novel Eu3+ organometallic compounds. Using spectral and time-resolved measurements, we show that the introduction of a chlorine atom provides a way to achieve a significant increase (from 27 to 36%) in the luminescence efficiency of the studied compounds due to coordination symmetry breaking in the complexes.
{"title":"Effect of Chlorine Introduction on Luminescent Properties of Novel Eu3+ Coordination Compounds with β-Diketones and Unsatured Carboxylic Acids","authors":"A. V. Osadchenko, D. S. Daibagya, I. A. Zakharchuk, A. S. Selyukov, S. A. Ambrozevich, A. V. Ryzhov, N. V. Pevtsov, D. N. Pevtsov","doi":"10.3103/s1068335624600232","DOIUrl":"https://doi.org/10.3103/s1068335624600232","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The paper examines the effect of introducing a chlorine atom into the coordination sphere of a rare earth ion for two novel Eu<sup>3+</sup> organometallic compounds. Using spectral and time-resolved measurements, we show that the introduction of a chlorine atom provides a way to achieve a significant increase (from 27 to 36%) in the luminescence efficiency of the studied compounds due to coordination symmetry breaking in the complexes.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2024-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141515675","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}
Pub Date : 2024-06-25DOI: 10.3103/s1068335623601838
R. V. Fursenko, E. S. Odintsov, A. D. Zakharov, A. Yu. Koptev, S. S. Minaev
Abstract
Temperature characteristics of a filtration combustion wave propagating upstream against a fresh mixture in a one-layer porous medium is studied experimentally using thermal imaging. The design of a model porous burner allows one to obtain data on the time evolution of the temperature distribution of the solid phase at the pore scale. It is shown that the macroscale propagation of a flame is accompanied by local distortions of its front and the emergence and movement of hot spots and low-temperature regions at the scale of several pores. The most common pattern of the local dynamic behavior of the filtration combustion wave is identified and described.
{"title":"Features of Nonstationary Filtration Combustion Wave Propagation in a Model One-Layer Porous Medium","authors":"R. V. Fursenko, E. S. Odintsov, A. D. Zakharov, A. Yu. Koptev, S. S. Minaev","doi":"10.3103/s1068335623601838","DOIUrl":"https://doi.org/10.3103/s1068335623601838","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Temperature characteristics of a filtration combustion wave propagating upstream against a fresh mixture in a one-layer porous medium is studied experimentally using thermal imaging. The design of a model porous burner allows one to obtain data on the time evolution of the temperature distribution of the solid phase at the pore scale. It is shown that the macroscale propagation of a flame is accompanied by local distortions of its front and the emergence and movement of hot spots and low-temperature regions at the scale of several pores. The most common pattern of the local dynamic behavior of the filtration combustion wave is identified and described.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2024-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141515677","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}
Pub Date : 2024-06-25DOI: 10.3103/s1068335623601875
D. A. Grachev, S. A. Elistratov, E. A. Mikhailov
Abstract
Magnetic fields in galaxies are usually originated through the action of a dynamo, which is based on the helicity of turbulent flows (alpha effect) and nonrigid rotation of a galaxy (differential rotation). They are opposed by dissipation, which tends to destroy the regular structures of the field. As a rule, dynamo equations contain averaged turbulence parameters. This approach presents difficulties in the case of galaxies with a highly inhomogeneous interstellar medium, associated, for example, with star formation. One way to solve the problem is to use random coefficients in the field equations. In this case, solutions require separate statistical analysis. This paper examines various statistical moments for the galactic magnetic field within the framework of a model assuming fluctuations of the alpha effect and turbulent diffusion.
{"title":"Statistical Properties of the Galactic Magnetic Field in the Dynamo Model with Fluctuations of the Alpha Effect and Turbulent Diffusion","authors":"D. A. Grachev, S. A. Elistratov, E. A. Mikhailov","doi":"10.3103/s1068335623601875","DOIUrl":"https://doi.org/10.3103/s1068335623601875","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Magnetic fields in galaxies are usually originated through the action of a dynamo, which is based on the helicity of turbulent flows (alpha effect) and nonrigid rotation of a galaxy (differential rotation). They are opposed by dissipation, which tends to destroy the regular structures of the field. As a rule, dynamo equations contain averaged turbulence parameters. This approach presents difficulties in the case of galaxies with a highly inhomogeneous interstellar medium, associated, for example, with star formation. One way to solve the problem is to use random coefficients in the field equations. In this case, solutions require separate statistical analysis. This paper examines various statistical moments for the galactic magnetic field within the framework of a model assuming fluctuations of the alpha effect and turbulent diffusion.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2024-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141515676","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}
Pub Date : 2024-06-17DOI: 10.3103/s1068335624600578
K. S. Melnik, E. S. Moiseev, L. R. Gilyazov, S. A. Moiseev
Abstract
We report a theoretical analysis of a photonic quantum interface, which makes it possible to deterministically convert photonic qubits from subcarrier wave to polarization encoding. The interface provides unambiguous conversion of an arbitrary phase of the input signal into the corresponding polarization of the converted radiation. Possibilities of implementing this interface in an integrated optical design and its use in constructing a hybrid quantum network are discussed.
{"title":"Photonic Quantum Interface between Subcarrier Wave and Polarization Encoding of Photonic Qubits","authors":"K. S. Melnik, E. S. Moiseev, L. R. Gilyazov, S. A. Moiseev","doi":"10.3103/s1068335624600578","DOIUrl":"https://doi.org/10.3103/s1068335624600578","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>We report a theoretical analysis of a photonic quantum interface, which makes it possible to deterministically convert photonic qubits from subcarrier wave to polarization encoding. The interface provides unambiguous conversion of an arbitrary phase of the input signal into the corresponding polarization of the converted radiation. Possibilities of implementing this interface in an integrated optical design and its use in constructing a hybrid quantum network are discussed.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2024-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141509032","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}
Pub Date : 2024-06-17DOI: 10.3103/s1068335624600554
Yu. K. Sedova, S. E. Minaev, E. O. Epifanov, D. V. Zhuchkova, S. P. Sysolyatin, V. P. Minaev, V. I. Yusupov, N. V. Minaev
Abstract
Laser lithotripsy using optical fiber to fragment salivary gland stones (sialoliths) is currently one of the most successful methods for treating salivary stone disease. It is important to reduce the fragmentation time of extremely hard salivary stones, which in practice is more than three hours in the case of large stones. We present new approaches to lithotripsy related to the use of radiation from a nanosecond thulium-doped fiber laser at a wavelength of 1.94 μm. The study is performed using gypsum phantoms and sialoliths. Parameters of laser exposure are determined that provide a high rate of lithotripsy without significant heating of surrounding tissues. It is shown that the mechanism of action of nanosecond laser radiation, which is well absorbed in water upon fragmentation of stones, is associated with the burnout of the binding organic material of sialolite and the explosive boiling of water. The results obtained can serve as the basis for the development of new promising medical technology.
{"title":"Prospects for Using a Pulsed Tm-Doped Fiber Laser for Lithotripsy of Salivary Stones","authors":"Yu. K. Sedova, S. E. Minaev, E. O. Epifanov, D. V. Zhuchkova, S. P. Sysolyatin, V. P. Minaev, V. I. Yusupov, N. V. Minaev","doi":"10.3103/s1068335624600554","DOIUrl":"https://doi.org/10.3103/s1068335624600554","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Laser lithotripsy using optical fiber to fragment salivary gland stones (sialoliths) is currently one of the most successful methods for treating salivary stone disease. It is important to reduce the fragmentation time of extremely hard salivary stones, which in practice is more than three hours in the case of large stones. We present new approaches to lithotripsy related to the use of radiation from a nanosecond thulium-doped fiber laser at a wavelength of 1.94 μm. The study is performed using gypsum phantoms and sialoliths. Parameters of laser exposure are determined that provide a high rate of lithotripsy without significant heating of surrounding tissues. It is shown that the mechanism of action of nanosecond laser radiation, which is well absorbed in water upon fragmentation of stones, is associated with the burnout of the binding organic material of sialolite and the explosive boiling of water. The results obtained can serve as the basis for the development of new promising medical technology.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2024-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141515745","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}
Pub Date : 2024-06-17DOI: 10.3103/s1068335624600505
I. A. Tereshchenko, O. V. Tikhonova
Abstract
The features of exciton formation in planar nanostructures under the action of a nonclassical field under the conditions of Kerr phase modulation are analyzed. Excitations of various exciton channels are enhanced or suppressed depending on the nonlinearity magnitude in the system. The possibility of controlling different excitation channels by varying the frequency detuning of the field relative to the resonant transition is demonstrated, and an analytical formula for determining its optimal value is found. The effect of amplification of even excitation channels has been detected, which is caused by correlations of photons under the action of a field in a state of two-mode squeezed vacuum.
{"title":"Dynamics of Exciton Formation in Planar Nanostructures under the Action of a Quantum Electromagnetic Field under Nonlinearity Conditions","authors":"I. A. Tereshchenko, O. V. Tikhonova","doi":"10.3103/s1068335624600505","DOIUrl":"https://doi.org/10.3103/s1068335624600505","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The features of exciton formation in planar nanostructures under the action of a nonclassical field under the conditions of Kerr phase modulation are analyzed. Excitations of various exciton channels are enhanced or suppressed depending on the nonlinearity magnitude in the system. The possibility of controlling different excitation channels by varying the frequency detuning of the field relative to the resonant transition is demonstrated, and an analytical formula for determining its optimal value is found. The effect of amplification of even excitation channels has been detected, which is caused by correlations of photons under the action of a field in a state of two-mode squeezed vacuum.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2024-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141515682","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}
Pub Date : 2024-06-17DOI: 10.3103/s1068335624600542
N. N. Bragin, V. N. Svetogorov, Yu. L. Ryaboshtan, A. A. Marmalyuk, A. V. Ivanov, M. A. Ladugin
Abstract
A comparison is made of conventional pin photodetectors and modern uni-traveling-carrier photodetectors based on InGaAs/InP heterostructures. The differences in the designs of heterostructures of these photodetectors are considered and the resulting features of their functioning are analyzed. It is shown that with comparable photosensitivity, the saturation photocurrent of uni-traveling-carrier photodetectors is approximately four times greater than that in conventional pin photodetectors. Devices with a photosensitive area 40 μm in diameter reach the saturation current at an input optical power of 10–12 and 60–70 mW for pin and uni-traveling-carrier photodetectors, respectively (reverse bias voltage of 5 V).
{"title":"Features of High-Power Uni-Traveling-Carrier InGaAs/InP Photodiodes","authors":"N. N. Bragin, V. N. Svetogorov, Yu. L. Ryaboshtan, A. A. Marmalyuk, A. V. Ivanov, M. A. Ladugin","doi":"10.3103/s1068335624600542","DOIUrl":"https://doi.org/10.3103/s1068335624600542","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>A comparison is made of conventional pin photodetectors and modern uni-traveling-carrier photodetectors based on InGaAs/InP heterostructures. The differences in the designs of heterostructures of these photodetectors are considered and the resulting features of their functioning are analyzed. It is shown that with comparable photosensitivity, the saturation photocurrent of uni-traveling-carrier photodetectors is approximately four times greater than that in conventional pin photodetectors. Devices with a photosensitive area 40 μm in diameter reach the saturation current at an input optical power of 10–12 and 60–70 mW for pin and uni-traveling-carrier photodetectors, respectively (reverse bias voltage of 5 V).</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2024-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141515749","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}
Pub Date : 2024-06-17DOI: 10.3103/s1068335624600530
A. A. Bubnov, A. V. Syui, V. Yu. Timoshenko
Abstract
We report an experimental study of optical and photothermal properties of aqueous suspensions of titanium nitride (TiN) nanoparticles (NPs), exhibiting plasmon resonance in the visible and near-IR spectral regions. Dependences of the rate of photoinduced heating and the value of photothermal conversion efficiency (PCE) on the concentration of TiN NPs are obtained for exciting laser wavelengths of 532, 665, and 808 nm. It is found that under irradiation at 808 nm, the PCE is 1.5–2.5 times greater than that under irradiation in the visible range of the spectrum, and for all studied laser wavelengths, an increase in the PCE is observed with increasing NP concentration, reaching a value of 0.55 for an NP concentration on the order of 1 mg/ml under irradiation at a wavelength of 808 nm. The concentration dependence of the PCE is explained by the contribution of multiple scattering in combination with light absorption in ensembles of TiN NPs. The results may be useful for biomedical applications of TiN NPs in the method of local photohyperthermia under multifrequency laser excitation.
{"title":"Study of Laser-Stimulated Heating of Aqueous Suspensions of Titanium Nitride Nanoparticles for Biomedical Applications","authors":"A. A. Bubnov, A. V. Syui, V. Yu. Timoshenko","doi":"10.3103/s1068335624600530","DOIUrl":"https://doi.org/10.3103/s1068335624600530","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>We report an experimental study of optical and photothermal properties of aqueous suspensions of titanium nitride (TiN) nanoparticles (NPs), exhibiting plasmon resonance in the visible and near-IR spectral regions. Dependences of the rate of photoinduced heating and the value of photothermal conversion efficiency (PCE) on the concentration of TiN NPs are obtained for exciting laser wavelengths of 532, 665, and 808 nm. It is found that under irradiation at 808 nm, the PCE is 1.5–2.5 times greater than that under irradiation in the visible range of the spectrum, and for all studied laser wavelengths, an increase in the PCE is observed with increasing NP concentration, reaching a value of 0.55 for an NP concentration on the order of 1 mg/ml under irradiation at a wavelength of 808 nm. The concentration dependence of the PCE is explained by the contribution of multiple scattering in combination with light absorption in ensembles of TiN NPs. The results may be useful for biomedical applications of TiN NPs in the method of local photohyperthermia under multifrequency laser excitation.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2024-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141515748","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}
Pub Date : 2024-06-17DOI: 10.3103/s1068335624600517
A. V. Bogatskaya, E. A. Volkova, A. M. Popov
Abstract
The features of propagation of ultrashort electromagnetic pulses with a nonzero electric area in plasma media are considered. In the framework of the approximation of unidirectional pulse propagation, general solutions of the equation for the electric area of a pulse in a conducting medium with a linear response to an external influence were obtained. The obtained data are compared with the results of calculations of the electric pulse area based on the exact solution of the second-order wave equation.
{"title":"Propagation of Electromagnetic Pulses with a Nonzero Electrical Area in Conducting Media","authors":"A. V. Bogatskaya, E. A. Volkova, A. M. Popov","doi":"10.3103/s1068335624600517","DOIUrl":"https://doi.org/10.3103/s1068335624600517","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The features of propagation of ultrashort electromagnetic pulses with a nonzero electric area in plasma media are considered. In the framework of the approximation of unidirectional pulse propagation, general solutions of the equation for the electric area of a pulse in a conducting medium with a linear response to an external influence were obtained. The obtained data are compared with the results of calculations of the electric pulse area based on the exact solution of the second-order wave equation.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2024-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141515744","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}
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