Radiation Physics and Chemistry最新文献

{"title":"Monte Carlo-based assessment of solid phantom equivalence to water in radiation therapy quality assurance","authors":"A. Khallouqi ,&nbsp;H. Sekkat ,&nbsp;O. Elmouden ,&nbsp;N. Ghosne ,&nbsp;I. Lagrini ,&nbsp;A. Halimi ,&nbsp;O. El rhazouani","doi":"10.1016/j.radphyschem.2026.113693","DOIUrl":"10.1016/j.radphyschem.2026.113693","url":null,"abstract":"<div><div>Accurate dosimetry is crucial for optimizing radiotherapy outcomes, balancing tumor control with healthy tissue sparing. Water phantoms represent the gold standard due to their tissue-equivalent properties, yet practical limitations such as setup complexity and portability drive the need for solid alternatives. This study employs Monte Carlo simulations using the GATE platform to comprehensively evaluate the dosimetric equivalence of common solid phantoms; RW3, Nylon, PMMA, Polyester, Polyethylene, Polystyrene, Original Plastic Water, and Virtual Water; against water for a 6 MV flattened photon beam from a Varian TrueBeam linear accelerator. Dosimetric parameters, including percentage depth dose (PDD) curves, lateral dose profiles at depth of 10 cm, and 3D volumetric dose distributions, were assessed under identical beam configurations (10 × 10 cm² field size, 100 cm SSD). Validation against experimental data acquired using a PTW Semiflex ionization chamber (0.125 cm³) in a motorized water phantom confirmed simulation fidelity, with gamma pass rates exceeding 99% (2%/2 mm criterion). Results ranked RW3 as the superior water substitute (mean PDD deviation: 0.65%; lateral: 4.68%; RMSE: 5.62%), followed by Plastic and Virtual phantoms, while Nylon, and Polyester exhibited unacceptable deviations (&gt;10%). Polyethylene showed anomalous positive bias (+3.98% PDD). These findings, benchmarked against IAEA and AAPM tolerance criteria (±2% for reference dosimetry, ±3% for routine QA), highlight material-specific radiological properties influencing photon interactions, underscoring RW3's utility for clinical quality assurance while identifying materials requiring correction factors (Polystyrene, Polyethylene) or unsuitable for clinical use without extensive adjustments (Nylon, Polyester exceeding 10% deviation).</div></div>","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"243 ","pages":"Article 113693"},"PeriodicalIF":2.8,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146134652","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

{"title":"Effect of Pb2+ substitution with Bi3+ on γ-ray shielding and mechanical properties of B2O3–PbO–BaO–ZnO–CaO–Bi2O3 glass","authors":"Mohammad Marashdeh ,&nbsp;Esraa H. Abdel-Gawad ,&nbsp;Hanan Akhdar ,&nbsp;Ali M. Hedaya ,&nbsp;Mohamed Elsafi","doi":"10.1016/j.radphyschem.2026.113710","DOIUrl":"10.1016/j.radphyschem.2026.113710","url":null,"abstract":"<div><div>Developing glass materials that combine reliable mechanical properties with high competence in radiation protection is important. In this research, four glass samples with compositions 40 B₂O₃: (20 − x) PbO: 15 BaO: 10 CaO: 15 ZnO: x Bi₂O₃ (x = 0, 5, 10, 20%) were prepared by melt quenching. An HPGe detector was used to determine γ-ray shielding parameters within the energies emitted from ²⁴¹Am, ¹³⁷Cs, ⁶⁰Co sources. At 0.060 MeV it was found that the linear attenuation coefficient (LAC) increased from 16.106 cm⁻¹ for the sample with zero % Bi₂O₃ to 21.183 cm⁻¹ for the sample with 20% Bi₂O₃. Additionally, a reduction in half-value length (HVL) was observed with increasing Bi₂O₃ concentration within the glass matrix. These findings highlight the role of Bi₂O₃ in augmenting the glass attenuation performance against γ-ray radiation. The improved γ-ray shielding efficiency was attributed to increased homogeneity of the glass matrix with higher Bi₂O₃ content. Simulation and theoretical results closely matched experimental measurements, confirming the accuracy of the evaluation methods. Mechanical moduli were derived by the application of Makishima-Mackenzie's theory. Mechanical tests indicated that the glass maintained acceptable mechanical properties despite Bi₂O₃ substitution. While Bi₂O₃ substitution significantly improved γ-ray shielding, mechanical tests confirmed that the glass maintained suitable structural properties for practical applications.</div></div>","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"243 ","pages":"Article 113710"},"PeriodicalIF":2.8,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146152628","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

{"title":"Recycling polypropylene waste packaging. Technical requirements for radiation processing","authors":"Julio Harada ,&nbsp;Juliana Arquinto ,&nbsp;Maria da Conceição Costa Pereira ,&nbsp;Maria Elizabeth Maués dos Santos ,&nbsp;Dione Pereira de Castro ,&nbsp;Traian Zaharescu ,&nbsp;Leonardo Gondim de Andrade e Silva","doi":"10.1016/j.radphyschem.2026.113711","DOIUrl":"10.1016/j.radphyschem.2026.113711","url":null,"abstract":"<div><div>This study addresses the use of radiation processing in the reuse of polypropylene (PP) waste derived from municipal products (MSW), evaluating its physical and chemical properties after e-beam (EB) irradiation in a wide range of doses between 12.5 and 500 kGy. The results show that EB irradiation up to 50 kGy has proven more efficient than conventional recycling methods, promoting molecular modifications and achieving convenient molecular rearrangements. Chemical and thermal analyses show the irradiation interference in PP after 25 kGy, and the melting temperature decreased when irradiated with a dose of up to 250 kGy, impacting the morphological and crystallinity phases, due to molecular cross-linking, especially in the PPrec samples. It was observed that the Vicat tests did not interfere with PPrec recycling, for secondary applications. The doses exceeding 100 kGy up to 500 kGy crosslinking allow PP to be a proper material as fillers, industrial applications, or utilized as an energy source, enhancing environmental sustainability. The use of EB in polymer processing presents a significant advantage as an alternative energy source, positioning it as a more sustainable and eco-friendly approach compared to traditional plastic recycling methods.</div></div>","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"243 ","pages":"Article 113711"},"PeriodicalIF":2.8,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146160134","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

{"title":"α-LiIO3 single crystals grown from aqueous solutions containing L-Alanine and glycine","authors":"Astghik Danghyan,&nbsp;Ruzan Sukiasyan,&nbsp;Ruben Apreyan,&nbsp;Liana Bezhanova,&nbsp;Nelli Gharibyan,&nbsp;Armen Atanesyan","doi":"10.1016/j.radphyschem.2026.113685","DOIUrl":"10.1016/j.radphyschem.2026.113685","url":null,"abstract":"<div><div>The present study focuses on the growth and investigation of pure α-LiIO₃ single crystals, as well as single crystals of α-LiIO₃ grown from aqueous solutions containing amino acids L-alanine (L-Ala) and Glycine (Gly), using the slow evaporation solution growth technique. An attempt was made to grow α-LiIO₃ crystals from an aqueous solution of lithium iodate containing amino acids to enhance the nonlinear optical and mechanical properties of α-LiIO₃ crystals suitable for both academic and industrial applications. The grown bulk crystals were characterized by means of several complementary techniques, such as optical spectroscopy, IR spectroscopy, single-crystal X-ray diffraction, powder X-ray diffraction (PXRD), and measurements of the second harmonic generation efficiency. In the presence of an amino acid in the solution, an increase in the rate of crystal growth was experimentally observed. In the IR spectra of α-LiIO₃:L-Ala and α-LiIO₃:Gly crystals, absorption bands appear that are absent in pure lithium iodate, but are characteristic of amino acids. The lattice parameters of the grown crystals were confirmed through the X-ray technique. Single crystal X-ray and powder X-ray diffraction measurements revealed that pure, as well as α-LiIO₃:L-Ala and α-LiIO₃:Gly crystals maintained a hexagonal structure, remaining single-phase within the amino acid's concentration range (5 mol%), indicating that the presence of L-Ala and Gly in solution does not violate the parameters of the crystal lattice. It was obtained that the second harmonic generation activity of the α-LiIO₃:L-Ala and α-LiIO₃:Gly crystals is higher than that of the pure α-LiIO₃ crystal. The enhancement of the optical properties of α-LiIO₃:L-Ala and α-LiIO₃:Gly crystals in comparison with pure LiIO₃ has been precisely examined by UV–Visible spectral analysis within the wavelength range of 280–800 nm. UV–Visible spectral analysis is also used to evaluate the band gap.</div></div>","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"243 ","pages":"Article 113685"},"PeriodicalIF":2.8,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146095725","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

{"title":"Phytochemical hispidulin versus clinically used anticancer drugs: A comparative analysis of gamma and neutron radiation interaction properties","authors":"Kubra Koc ,&nbsp;Esra Cinan ,&nbsp;Demet Yılmaz ,&nbsp;Neslihan Yüce ,&nbsp;Elif Boydaş ,&nbsp;Yılmaz Şahin","doi":"10.1016/j.radphyschem.2026.113637","DOIUrl":"10.1016/j.radphyschem.2026.113637","url":null,"abstract":"<div><div>The search for effective <strong>radiosensitising</strong> agents with minimal toxicity to normal tissues remains a critical challenge in cancer therapy. Plant-derived compounds, such as Hispidulin, have demonstrated promising anticancer activities with low cytotoxicity toward healthy cells. <strong>This study compared</strong> the radiation interaction <strong>characteristics</strong> of Hispidulin <strong>with</strong> those of <strong>anticancer agents commonly used in combination with radiotherapy</strong>, <strong>namely</strong> Ipilimumab, Trastuzumab, and Dacarbazine. The radiation interaction parameters, including the LAC, MAC, MFP, HVL, <em>Z</em>_<em>eff</em> and <em>N</em>_<em>eff</em>, were experimentally <strong>determined using</strong> a gamma spectrometer <strong>equipped with a</strong> Ba-133 radioactive source and ultra-low energy germanium detector (ULEGe). Theoretical calculations were <strong>also conducted for</strong> EBF <strong>and</strong> EABF. <strong>The findings suggest</strong> that agents such as Dacarbazine and Trastuzumab exhibit <strong>substantial</strong> energy deposition and neutron interaction <strong>capabilities</strong>, supporting their <strong>potential role in</strong> targeted or radiosensitising strategies, <strong>particularly</strong> under neutron-based therapies. In contrast, Hispidulin demonstrate<strong>d notable</strong> radioprotective potential due to its <strong>superior attenuation efficiency, suggesting its potential use</strong> as a radioprotective or adjunctive agent rather than as a primary radiosensitizer. Moreover, Hispidulin's radiation interaction characteristics appear, <strong>in certain respects, to be</strong> comparable to those of established chemotherapeutic drugs. These <strong>results</strong> provide new insights into the <strong>potential</strong> application of Hispidulin as a adjunct to radiotherapy <strong>and emphasise</strong> the importance of evaluating anticancer agents not only in terms of their pharmacological activity but also in terms of their radiophysical properties.</div></div>","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"243 ","pages":"Article 113637"},"PeriodicalIF":2.8,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145995420","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

{"title":"Effect of gamma irradiation treatment on the technological characteristics of quinoa flour","authors":"Sarah Sanaei Nasab ,&nbsp;Neda Mollakhalili-Meybodi ,&nbsp;Masoumeh Arab ,&nbsp;Seyede Marzieh Hosseini ,&nbsp;Hossein Fallahzadeh","doi":"10.1016/j.radphyschem.2026.113691","DOIUrl":"10.1016/j.radphyschem.2026.113691","url":null,"abstract":"<div><div>Quinoa seeds were irradiated at doses of 0.5, 1, 2.5, 5, 7.5, and 10 kGy and then their technological characteristics were analyzed as physicochemical, functional, rheological, thermal, pasting, textural, FTIR, and morphological parameters.</div><div>Results indicated that gamma irradiation affected the glycosidic linkage of starch, the amylose/amylopectin ratio, and the tertiary structure of proteins, depending on dose. WHC (1.88 ± 0.01%), OHC (1.76 ± 0.01%), and WSI (4.09 ± 0.02 g/g) increased at 10 kGy, compared with the control, verified the enhanced hydrolytic depolymerization of starch. Significant decrease in the viscosity parameters (peak, hold, final, and setback), G’ and G”, and significant increase in tan δ (1.37 × 10⁻¹±0.02 to 2.43 × 10⁻¹±0.05) was observed. The lowest gelatination temperatures (onset, peak, conclusion) and enthalpy change of gelatinization were observed in sample irradiated at 10 kGy, which was attributed to the highest damage in starch structure induced by gamma irradiation. A decrease in hardness with increasing doses of gamma irradiation indicated increased crystallization of amylopectin. The analysis of FTIR confirmed the effects of gamma irradiation on carbohydrate and water absorption capacity, showing a reduction in O–H stretching vibrations and increases in C–H stretching and C<img>O stretch, especially at 10 kGy. Scanning electron microscopy showed surface cracks and weakening of starch granules at 7.5 and 10 kGy. These results confirmed that higher doses affected technological properties and may be useful in food formulation.</div></div>","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"243 ","pages":"Article 113691"},"PeriodicalIF":2.8,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146134651","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

{"title":"Mechanism of photon emission from TiO2 irradiated by swift heavy ion","authors":"Q.M. Xu ,&nbsp;X.Z. Tang ,&nbsp;L. Zhang ,&nbsp;Z.Y. Hong ,&nbsp;J. Gou ,&nbsp;Y. Song ,&nbsp;W. Cheng ,&nbsp;G.X. Wang ,&nbsp;S.Y. Liu ,&nbsp;K.K. Ding ,&nbsp;C.H. Zhang","doi":"10.1016/j.radphyschem.2026.113704","DOIUrl":"10.1016/j.radphyschem.2026.113704","url":null,"abstract":"<div><div>Titanium dioxide (TiO₂) is a very promising photoelectric material. The research on its optical properties and energy levels is of great significance. Radiation-induced luminescence has been used to study the photon-emission mechanism and its energy levels. The emission spectra from TiO₂ single crystals and doped TiO₂:X (Cr, Fe) ceramics induced by 479 MeV Xe²⁹⁺ ion irradiation at room temperature are obtained. In the spectrum, the multi-peak Gaussian fitting results are in agreement with the calculated energy levels. In the spectra from TiO₂ single crystals, the emission band at 2.24 eV from the transition of Γ₅→Γ₃ in the conduction band, and other bands at 1.91, 1.75, 1.64, and 1.53 eV from the energy level in the valence band, are observed. The results show that the electrons undergo cascade transitions, resulting in photon emission. The emission spectra of TiO₂:X ceramics are related to the doping elements. The results indicate that the mechanism of ion radiation-induced luminescence is different from photoluminescence.</div></div>","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"243 ","pages":"Article 113704"},"PeriodicalIF":2.8,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146146246","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

{"title":"Radiation of twisted photons in elliptical multifrequency undulators","authors":"O.V. Bogdanov ,&nbsp;S.V. Bragin ,&nbsp;P.O. Kazinski ,&nbsp;V.A. Ryakin","doi":"10.1016/j.radphyschem.2026.113701","DOIUrl":"10.1016/j.radphyschem.2026.113701","url":null,"abstract":"<div><div>The theory of radiation of twisted photons in elliptical multifrequency undulators is developed. It is shown that helical multifrequency undulators can be employed as a bright and versatile source of photons in the states that are superpositions of the modes with definite projection of total angular momentum (TAM), amplitude, and relative phase. All these parameters of the state are readily controlled by the undulator design. The explicit expression for the amplitude of radiation of a twisted photon from a charged particle in the multifrequency undulator is derived. The energy spectrum of radiation and the selection rules for the TAM projection of radiated photons are described. The symmetry properties of the spectrum with respect to the TAM projection are established. The interpretation to the energy spectrum and to the selection rules is given in terms of virtual photons mediating between the charged particle and the undulator. The results obtained are also applicable to radiation of twisted photons produced by ultrarelativistic charged particles moving in plane multifrequency electromagnetic waves.</div></div>","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"243 ","pages":"Article 113701"},"PeriodicalIF":2.8,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146152627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

{"title":"On equivalence of metal-dielectric and single-layer dielectric waveguides in the problems of accelerator physics","authors":"M.I. Ivanyan ,&nbsp;B.A. Grigoryan ,&nbsp;A.H. Grigoryan ,&nbsp;L.V. Aslyan ,&nbsp;A.S. Vardanyan ,&nbsp;V.G. Khachatryan ,&nbsp;M.Z. Karalyan ,&nbsp;V. Sh Avagyan","doi":"10.1016/j.radphyschem.2026.113644","DOIUrl":"10.1016/j.radphyschem.2026.113644","url":null,"abstract":"<div><div>The impedance characteristics of a cylindrical waveguide with a two-layer wall are compared with similar characteristics both an open dielectric waveguide and a waveguide with a perfectly conducting wall inside coated by a dielectric layer. Based on the analysis, a conclusion is made about their interchangeability, and in some important cases – about the preference for using an open dielectric waveguide when solving problems of particle radiation in waveguides and their application.</div></div>","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"243 ","pages":"Article 113644"},"PeriodicalIF":2.8,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146014445","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

{"title":"X–ray diffraction in different crystal cuts under a temperature gradient","authors":"V.R. Kocharyan,&nbsp;T.G. Dovlatyan,&nbsp;V.V. Margaryan,&nbsp;Yu.M. Cherepennikov,&nbsp;A.E. Movsisyan,&nbsp;V.N. Aghabekyan,&nbsp;R.K. Mirzoyan,&nbsp;H.G. Margaryan,&nbsp;A.V. Shahverdyan,&nbsp;M.H. Mesropyan,&nbsp;S.N. Noreyan","doi":"10.1016/j.radphyschem.2026.113654","DOIUrl":"10.1016/j.radphyschem.2026.113654","url":null,"abstract":"<div><div>The peculiarities of X–ray diffraction from atomic planes of the same family in different cuts of quartz single crystals under the temperature gradient are investigated. Quartz single crystals were shaped into rectangular parallelepiped plates with X- and Z-cuts, with one heated edge oriented parallel to the (10 <span><math><mrow><mover><mn>1</mn><mo>‾</mo></mover></mrow></math></span> 0) reflecting planes. The experiments were carried out using collimated polychromatic X–rays in symmetric Laue geometry. For different values of the temperature gradient applied to the crystal, both sectional topograms at different distances from the crystal and spectra of the reflected beam were obtained. The experimental results showed that the parameters of the deformation field formed at the same temperature gradient applied perpendicularly to the reflecting planes (10 <span><math><mrow><mover><mn>1</mn><mo>‾</mo></mover></mrow></math></span> 0) of the crystal with different cuts are significantly different: for the same heat applied to the single crystal, the bending radius in the X–cut sample was significantly smaller than the bending radius of the Z–cut sample.</div></div>","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"243 ","pages":"Article 113654"},"PeriodicalIF":2.8,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146014792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}