Radiation Physics and Chemistry最新文献

{"title":"Organ-level radiation dose estimations from cardiac catheterizations in neonates with tetralogy of Fallot","authors":"Jeannette R. Wong-Siegel, Andrew C. Glatz, Jeffrey D. Zampi, Courtney E. McCracken, Yun Zhang, Bryan H. Goldstein, Michael L. O’Byrne, Shabana Shahanavaz, Mark A. Law, Teresa Evans, Athar M. Qureshi, Christopher J. Petit, Tacy Downing, Choonsik Lee","doi":"10.1016/j.radphyschem.2025.113097","DOIUrl":"https://doi.org/10.1016/j.radphyschem.2025.113097","url":null,"abstract":"Children with congenital heart disease (CHD) undergo procedures requiring ionizing radiation (IR). Estimation of organ-level radiation exposure is difficult due to differences in patient size and other technical parameters. Here, we utilized a dosimetry tool to estimate organ-level radiation doses from a sample of cardiac catheterizations performed in a neonatal cohort with tetralogy of Fallot (TOF), the most common form of cyanotic CHD, requiring early intervention.","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"1 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144504022","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":"Computational and experimental estimation of the calibration coefficient of an in vivo counter for 18F-FDG brain activity","authors":"E.M.R. Andrade, K.D. Vital, T.C.F. Fonseca, T.A. Silva, L. Paixão, T.P.R. Campos, B.M. Mendes","doi":"10.1016/j.radphyschem.2025.113104","DOIUrl":"https://doi.org/10.1016/j.radphyschem.2025.113104","url":null,"abstract":"The 2-[<ce:sup loc=\"post\">18</ce:sup>F]fluoro-2-deoxy-<ce:small-caps>d</ce:small-caps>-glucose (<ce:sup loc=\"post\">18</ce:sup>F-FDG) is a widely used radiopharmaceutical in Positron Emission Tomography (PET) exams, with its demand increasing over the last decade. This has resulted in a higher number of workers exposed to the risk of internal contamination during its production and clinical use. Computer modeling has proven effective in evaluating and optimizing <ce:italic>in vivo</ce:italic> monitoring systems. This study utilized fourteen anthropomorphic computational phantoms, including voxelized reference adult phantoms from the International Commission on Radiation Protection (ICRP) and baby and child phantoms, to compute calibration coefficients (CC) and analyze their fluctuations. The Monte Carlo N-Particle eXtended (MCNPx) code was employed to assess the impact of head-detector distance (HDD) variations on CC values. The detector was positioned at 0 cm (HDD<ce:inf loc=\"post\">0</ce:inf>), 10 cm (HDD<ce:inf loc=\"post\">10</ce:inf>), 50 cm (HDD<ce:inf loc=\"post\">50</ce:inf>), and 100 cm (HDD<ce:inf loc=\"post\">100</ce:inf>) from the head. A calibration coefficient for <ce:italic>in vivo</ce:italic> monitoring of <ce:sup loc=\"post\">18</ce:sup>F-FDG in the brain was determined using four physical head phantoms: a plastic head simulator named Adult Male Head Phantom (AM_HP), a 32-week-old baby (Baby32w), a 3D-printed adult male head phantom made of Acrylonitrile Butadiene Styrene of Adult Male Reference Computational Phantom (AM_HP_ABS), and a plastic adult male head (<ce:sup loc=\"post\">18</ce:sup>F_HP). A 3\" × 3″ thallium-doped sodium iodine (NaI(Tl)) scintillator detector was positioned at HDD<ce:inf loc=\"post\">0</ce:inf>. Computational results indicated that increasing the HDD reduced the percentage difference between the minimum and maximum CC and relative error, as expected, but decreased detection efficiency. <ce:italic>In vivo</ce:italic> monitoring aims to detect minimal incorporated activity, thus recommending the most efficient counting geometry (HDD<ce:inf loc=\"post\">0</ce:inf>). Experimental results for HDD<ce:inf loc=\"post\">0</ce:inf> with the physical phantoms showed mean CC values of 69.3, 38.5, 55.9, and 18.6 Bq.CPS<ce:sup loc=\"post\">−1</ce:sup> for AM_HP, <ce:sup loc=\"post\">18</ce:sup>F_HP, AM_HP_ABS, and Baby32w, respectively. Differences between computational and physical phantoms highlight the influence of elemental composition and geometry. This study directly addresses the significant errors associated with single-phantom approaches by providing a practical framework of calibration coefficients for diverse anatomies, thereby improving the accuracy of workers' internal dose assessments.","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"18 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144503951","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":"Thermal neutron detector based on BNCT beam monitoring: conceptual design and readout electronics measurement","authors":"Juan Li, Xinle Lang, Yucong Chen, Xiaotao Liu, Zulong Zhao, Xincai Kang, Zhiguo Xu, Ruishi Mao, Zhengguo Hu, Guoqing Xiao","doi":"10.1016/j.radphyschem.2025.113107","DOIUrl":"https://doi.org/10.1016/j.radphyschem.2025.113107","url":null,"abstract":"Beam monitoring and evaluation are very important to boron neutron capture therapy (BNCT), and a variety of detectors have been developed for these applications. In this study, a method of position sensitive neutron detector based on evaporated solid neutron conversion layer is proposed and designed, and the structure design and working gas optimization of the detector are carried out by Monte Carlo method. The related hardware design of readout electronics for neutron detector is completed, and the electronic performance test is carried out. The results show that the thickness of the neutron conversion layer is the best when the thickness of the neutron conversion layer is 2 μm. At the same time, the aluminum layer coated with 2 μm after the neutron conversion layer can effectively reduce the most probable angle of the emitted particles, and Ar: CO2 (90: 10) is used as the working gas. The front-end readout electronics can meet the bipolar signal processing of 64 channels in the dynamic range of 120 fC ∼10 pC at the sampling frequency of 1–100 MHz. The set of electronic system has high integration, low noise, low power, and can quickly process multi-channel signals. The integral nonlinearity is less than 1.5 %, which can meet the requirements of real-time online monitoring neutron detectors of BNCT. It is evident that this ionization-based neutron detector with multichannel and high counting rate capability has great development prospects dose monitoring and evaluation applications in BNCT.","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"94 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144504021","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":"Luminescence characteristics of bismuth borate glass doped with different rare earth A2O3 (A = Ce, Nd, Sm)","authors":"A. Ratep, I. Kashif","doi":"10.1016/j.radphyschem.2025.113095","DOIUrl":"https://doi.org/10.1016/j.radphyschem.2025.113095","url":null,"abstract":"In this study, we prepared bismuth borate (BBi) glasses doped with various rare earth oxides using the melt quenching technique approach, having glass composition 50Bi<ce:inf loc=\"post\">2</ce:inf>O<ce:inf loc=\"post\">3</ce:inf>-50B<ce:inf loc=\"post\">2</ce:inf>O<ce:inf loc=\"post\">3</ce:inf>-1A<ce:inf loc=\"post\">2</ce:inf>O<ce:inf loc=\"post\">3</ce:inf> (A= Ce, Nd and Sm). The synthesized glass samples have been examined in terms of physical, thermal, and spectroscopic aspects. The Fourier Transform Infrared spectrum confirms the generation of structural group vibrations (BO<ce:inf loc=\"post\">3</ce:inf> and BO<ce:inf loc=\"post\">4</ce:inf>) in glasses by adding rare earth. The thermal and chemical stability of glasses doped with Ce or Sm ions is higher than that of the sample doped with Nd ions, which is well associated with the observed N<ce:inf loc=\"post\">4</ce:inf> {BO<ce:inf loc=\"post\">4</ce:inf> / (BO<ce:inf loc=\"post\">4</ce:inf> + BO<ce:inf loc=\"post\">3</ce:inf>)} units in the FTIR spectra. The refractive index values of the glass samples under study indicate they can capture light, making them a potentially unique choice for use as a core material for optical fibers.","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"51 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144337608","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":"Impact of nuclear cross-section libraries on neutron beam quality and dose distribution in accelerator-based BNCT: a full-process Monte Carlo study","authors":"Hongbing Song, Xiong Yang, Yao Chen, Guangdong Ma, Zhifeng Li, Sheng Wang, Changli Ruan, Xiangpan Li","doi":"10.1016/j.radphyschem.2025.113099","DOIUrl":"https://doi.org/10.1016/j.radphyschem.2025.113099","url":null,"abstract":"This work presents a full-process Monte Carlo investigation of how evaluated nuclear cross-section libraries influence neutron beam characteristics and dose distribution in accelerator-based boron neutron capture therapy. Simulations were performed using PHITS with three representative combinations of proton, neutron, photon, and thermal scattering data derived from ENDF/B-VII.1, ENDF/B-VIII.0, and JENDL-5.0. The modeling sequence includes proton–lithium neutron production, moderation and filtering in a beam shaping assembly, and dose deposition in both a homogeneous soft-tissue-equivalent phantom and a voxelized adult female head phantom based on ICRP 110. The results reveal that variations in nuclear data, particularly for the <ce:sup loc=\"pre\">7</ce:sup>Li(p,n)<ce:sup loc=\"post\">7</ce:sup>Be reaction, lead to significant differences in neutron spectra, epithermal flux, and dose-related quantities. Key clinical metrics such as advantage depth dose rate and treatment time show deviations of up to 13%, highlighting the propagation of nuclear data uncertainty from source modeling to final dose estimation. This study demonstrates how nuclear data selection can affect both beam design and dose estimation accuracy, emphasizing the need for careful cross-section library consideration in simulation-based beamline development and validation.","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"17 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144337633","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":"Synchrotron radiation-based X-rays imaging by Dy3+ doped silicoborate glass scintillator: Fabrication, optical, luminescence and scintillation performances","authors":"N. Intachai, W. Rachniyom, N. Wantana, Y. Tariwong, F. Khrongchaiyaphum, C.S. Sarumaha, P. Pakawanit, C. Phoovasawat, P. Kanjanaboos, W. Rueangsawang, H.J. Kim, H. Niamin, S. Kothan, J. Kaewkhao","doi":"10.1016/j.radphyschem.2025.113100","DOIUrl":"https://doi.org/10.1016/j.radphyschem.2025.113100","url":null,"abstract":"Dysprosium-doped glass scintillators have gained increasing attention due to their promising luminescent properties for applications in radiation detection, photonics, and optoelectronic devices. Glass matrices doped with Dy<ce:sup loc=\"post\">3+</ce:sup> ions exhibit strong emissions in the visible spectrum, particularly in the yellow region around 575 nm, making them suitable for scintillation application. These glasses are prepared via the melt-quenching technique at 1500°C. The resulting materials are transparent and exhibit high densities, reaching up to 4.24 g/cm<ce:sup loc=\"post\">3</ce:sup>. Absorption spectra reveal distinct bands that confirm the existence of Dy<ce:sup loc=\"post\">3+</ce:sup> ions into the glass matrix. Photoluminescence measurements indicate that the glass achieves maximum emission intensity at a Dy<ce:inf loc=\"post\">2</ce:inf>O<ce:inf loc=\"post\">3</ce:inf> concentration of 1.0 mol%, while X-ray induced luminescence peaks at 1.5 mol%. The measured decay time of the luminescence is observed within the millisecond range. X-ray imaging can be conducted at the Synchrotron Light Research Institute (Beamline 1.2W), providing high-resolution and precise analysis of scintillation performance. Dy<ce:sup loc=\"post\">3+</ce:sup>-doped glass scintillators exhibit excellent optical properties and strong emission intensity, highlighting their potential as innovative materials for next-generation scintillation applications.","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"30 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144337607","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":"Organ Dose Estimation in Pediatric Abdomen and Pelvic Radiographs Using Caldose_X Monte Carlo Simulations","authors":"Paula Vosiak, Akemi Yagui, Hugo Schelin, Priscila Castilho, Rosiane Mello, Sergei Paschuk, Adriano Legnani, Maryanna Regina de Souza Roberto, Alcilene Cristina Da Silva, Viviane Asfora","doi":"10.1016/j.radphyschem.2025.113094","DOIUrl":"https://doi.org/10.1016/j.radphyschem.2025.113094","url":null,"abstract":"The growing use of radiological imaging in pediatric care has raised concerns about ionizing radiation exposure, particularly in radiosensitive organs. Children are more vulnerable to stochastic effects such as radiation-induced cancer due to their smaller body size and longer life expectancy. Abdominal and pelvic radiographs are among the most frequently performed examinations in this population, often involving critical organs like the bladder, gonads, and bone marrow. This study aimed to estimate organ doses and associate radiation risk in pediatric abdominal and pelvic radiographs using the Caldose_X software based on Monte Carlo simulations. Examinations were analyzed across five pediatric age groups (0–1, 1–5, 5–10, 10–15, and ≥15 years), with input parameters including incident air kerma (Ka,i), kerma-area product (PKA), and individual anthropometric data. The results showed that the bladder, reproductive organs, intestines, spine, and bone marrow received the highest doses, with absorbed dose increasing progressively with patient age. Significant intra-group variability was also observed, reflecting differences in anatomy, positioning, and collimation. These findings underscore the importance of individualized imaging protocols and support the establishment of age-specific Diagnostic Reference Levels (DRLs).","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"632 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144337632","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":"Radiolytic transformations of methyltrioctylammonium carbonate","authors":"M.M. Belova,&nbsp;A.V. Ponomarev","doi":"10.1016/j.radphyschem.2025.113077","DOIUrl":"10.1016/j.radphyschem.2025.113077","url":null,"abstract":"<div><div>Methyltrioctylammonium carbonate (TOMAC) serves as a reference extractant in the CARBEX concept for reprocessing spent nuclear fuel. The present work is a study of radiolysis of undiluted TOMAC with 3 MeV electrons at an absorbed dose of up to 150 kGy. Radiolysis results in the degradation of both carbonate anions and tetraalkylammonium cations. Accordingly, CO₂ (yield about 0.206 μmol J⁻¹) and alkylamines (including dimers) with different alkyl compositions are formed. The change in alkyl substituents is accompanied by the formation of H₂ (yield about 0.25 μmol J⁻¹). The observed yields of liquid radiolysis products are about 0.40 μmol J⁻¹, while the yield of radiolytic degradation of TOMAC is about 0.36 μmol J⁻¹. The results indicate a relatively high stability of TOMAC to radiolysis and are consistent with literature data on the effect of radiation on the hydrodynamic and extraction properties of TOMAC.</div></div>","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"237 ","pages":"Article 113077"},"PeriodicalIF":2.8,"publicationDate":"2025-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144335594","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":"Performance of the LABDOS01 spectrometer in dosimetric measurements","authors":"Silvia Vernetto, Carlo Francesco Vigorito, Martin Kákona, Roman Dvořák, Satoshi Kodaira, Stefano Cirilli, Fabio Romanelli, Daniele Savietto, Alba Zanini","doi":"10.1016/j.radphyschem.2025.113031","DOIUrl":"https://doi.org/10.1016/j.radphyschem.2025.113031","url":null,"abstract":"This paper describes the performance of the LABDOS01, a silicon diode-based spectrometer suitable for dose measurements in mixed radiation fields. The instrument is currently being used in two high-altitude environmental dose monitoring projects: SAMADHA (South Atlantic Magnetic Anomaly Dosimetry at High Altitude) at Chacaltaya (Bolivia, 5240 m a.s.l.) and CORDIAL (COsmic Rays Dosimetry In Antarctic Latitudes) at the Concordia station (Antarctica, 3233 m a.s.l.). Before installing two of these devices at the measurement sites, the detectors were tested on flight routes covering a wide range of geomagnetic latitudes. The collected dosimetric data were compared with the expectations derived by the CARI-7A software, which provides the absorbed dose rate in silicon due to cosmic ray secondaries at a given position on the Earth. The measured dose rates along the flights at variable altitude and rigidity cutoff agree well with the simulated ones. By analyzing the spectrum of the energy deposited in the silicon layer, we derive an empirical method to approximately evaluate the ambient dose equivalent <mml:math altimg=\"si42.svg\" display=\"inline\"><mml:mrow><mml:msup><mml:mrow><mml:mi>H</mml:mi></mml:mrow><mml:mrow><mml:mo>∗</mml:mo></mml:mrow></mml:msup><mml:mrow><mml:mo>(</mml:mo><mml:mn>10</mml:mn><mml:mo>)</mml:mo></mml:mrow></mml:mrow></mml:math>, a quantity directly related to the biological damage caused by environmental radiation.","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"105 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144337635","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":"Organo-functionalization of polyvinyl cyanide for sorption of 152+154Eu-citrate chelates","authors":"Mohamed A. Ghamry,&nbsp;Mohamed A. Attia,&nbsp;Moustafa A. Hamoud,&nbsp;Mamdoh R. Mahmoud","doi":"10.1016/j.radphyschem.2025.113090","DOIUrl":"10.1016/j.radphyschem.2025.113090","url":null,"abstract":"<div><div>This study applied radiation-induced polymerization to synthesize cetrimonium bromide-functionalized polyvinyl cyanide (CBFPVC). This polymeric material was utilized as an adsorbent for ^152+154Eu(III)-citrate anionic complexes from aqueous solutions. The effects of various parameters such as sample mass, equilibrium time, solution pH, and the citrate-to-Eu(III) ratio were studied under static conditions. The synthesized sorbent effectively removed the investigated Eu(III)-citrate chelates from their aqueous solutions with only few minutes needed to attain equilibrium. At [citrate]/[Eu(III)] molar ratio of 2:1, 90 % of the Eu(III)-citrate was sorbed onto CBFPVC at pH 10 in the first hour of contact. The sorption data is best with the pseudo-second-order kinetic model, indicating chemisorption. The experimental sorption equilibrium data were analyzed using a variety of isotherm models (Langmuir, Freundlich, and Dubinin-Radushkevich), and the first one exhibited the best alignment. The calculation of thermodynamic parameters (ΔG°, ΔH°, and ΔS°) indicates that the sorption process was endothermic, favorable, and spontaneous. Several desorbing agents were used to study the desorption of Eu(III)-citrate from the loaded sample and Na₂SO₄ solution produced the highest recovery.</div></div>","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"237 ","pages":"Article 113090"},"PeriodicalIF":2.8,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144335596","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}