Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment最新文献

{"title":"ATLAS ITk pixel detector overview","authors":"Craig Buttar,&nbsp;ATLAS ITk collaboration","doi":"10.1016/j.nima.2024.169978","DOIUrl":"10.1016/j.nima.2024.169978","url":null,"abstract":"<div><div>In the high-luminosity era of the Large Hadron Collider, the instantaneous luminosity is expected to reach unprecedented values, resulting in up to 200 proton–proton interactions in a typical bunch crossing. To cope with the resulting increase in occupancy, bandwidth and radiation damage, the ATLAS Inner Detector will be replaced by an all-silicon system, the Inner Tracker (ITk). The innermost part of the ITk will consist of a pixel detector, with an active area of about 13 m<span><math><msup><mrow></mrow><mrow><mn>2</mn></mrow></msup></math></span>. To deal with the changing requirements in terms of radiation hardness, power dissipation and production yield, several silicon sensor technologies equipped with novel ASICs connecting by bump-bonding technique will be employed in the five barrel and endcap layers. As a timeline, it is facing to pre-production of components, sensor, building modules, mechanical structures and services. This contribution presents the status of the ITk-pixel project focusing on the lessons learned and the biggest challenges towards production, from mechanics structures to sensors, and it will summarise the latest results on closest-to-real demonstrators built using module, electric and cooling services prototypes.</div></div>","PeriodicalId":19359,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment","volume":"1070 ","pages":"Article 169978"},"PeriodicalIF":1.5,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656700","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":"Optimization of ray-tracing simulations to confirm performance of the GP-SANS instrument at the High-Flux Isotope Reactor","authors":"James M. Rogers ,&nbsp;Matthew J. Frost ,&nbsp;Lisa M. Debeer-Schmitt","doi":"10.1016/j.nima.2024.169965","DOIUrl":"10.1016/j.nima.2024.169965","url":null,"abstract":"<div><div>The CG-2 beamline at the High Flux Isotope Reactor (HFIR) exhibits a notable discrepancy between observed count rates and the count rates we would expect based on a Monte-Carlo neutron ray-trace simulation. These simulations consistently predict count rates approximately five times greater than those observed in four separate experimental runs involving different instrument configurations. This discrepancy suggests that certain factors are causing losses in measurements that are not adequately accounted for in the simulation, in particular guide reflectivity or misalignment.</div><div>To investigate these discrepancies, a high-dimensional simulation parameter approach is applied in order to understand the losses. Region of Interest (ROI) groups along the instrument are assigned to different surfaces of the guide components within the simulation. This allows the parameters of those guide components to be varied as a group to minimize the complexity of the search space. The result is an optimization of simulation parameters using an iterative scheme that aims to minimize the difference between experimentally measured count rates and simulated count rates across all tested collimator combinations.</div><div>This proposed methodology holds the potential to reveal previously unrecognized sources of intensity loss in the CG-2 beamline at HFIR and improve the accuracy of simulations, leading to enhanced understanding and performance of the beamline for various scientific applications.</div></div>","PeriodicalId":19359,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment","volume":"1069 ","pages":"Article 169965"},"PeriodicalIF":1.5,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142538745","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":"Pixelation method for the FARCOS array","authors":"G. Cardella ,&nbsp;N.S. Martorana ,&nbsp;L. Acosta ,&nbsp;G. D’Agata ,&nbsp;E. De Filippo ,&nbsp;E. Geraci ,&nbsp;B. Gnoffo ,&nbsp;C. Guazzoni ,&nbsp;C. Maiolino ,&nbsp;A. Pagano ,&nbsp;E.V. Pagano ,&nbsp;M. Papa ,&nbsp;S. Pirrone ,&nbsp;G. Politi ,&nbsp;F. Risitano ,&nbsp;F. Rizzo ,&nbsp;P. Russotto ,&nbsp;G. Santagati ,&nbsp;M. Trimarchi ,&nbsp;C. Zagami","doi":"10.1016/j.nima.2024.169961","DOIUrl":"10.1016/j.nima.2024.169961","url":null,"abstract":"<div><div>A pixelation method addresses the challenge of accurately assigning coordinates to each particle that impinges on the detector area. The pixelation method used for the analysis of the data acquired with Double-Sided Silicon Strip Detectors of the Femtoscope ARray for COrrelations and Spectroscopy FARCOS is described here. The application of the pixelation method requires several tasks to be performed. First, the coincidence in the detection time of the particles of front and back signals allows the elimination of spurious events. The second fundamental operation is the recovery of inter-strip events obtained comparing the energies of detected front and back side signals in all possible configurations. Two-alpha coincidences are analysed and the ⁸Be<span><math><msub><mrow></mrow><mrow><mi>g</mi><mo>.</mo><mi>s</mi><mo>.</mo></mrow></msub></math></span> resonance is observed to compare the energy resolution of recovered inter-strip events with that of single-strip events. Using this pixelation method, a 41 ± 8% improvement in the efficiency of detecting three-alpha particles was achieved.</div></div>","PeriodicalId":19359,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment","volume":"1069 ","pages":"Article 169961"},"PeriodicalIF":1.5,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142445517","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":"Development of a charged particle-γ coincidence system for nuclear structure and reaction studies at TIFR","authors":"A. Kundu ,&nbsp;P. Dey ,&nbsp;R. Palit ,&nbsp;M. Kumar Raju ,&nbsp;S.V. Jadhav ,&nbsp;B.S. Naidu ,&nbsp;Vishal Malik ,&nbsp;Biswajit Das ,&nbsp;Sudip De ,&nbsp;A. Sindhu ,&nbsp;A.T. Vazhappily","doi":"10.1016/j.nima.2024.169976","DOIUrl":"10.1016/j.nima.2024.169976","url":null,"abstract":"<div><div>A new detector system for measurements of charged particles and <span><math><mi>γ</mi></math></span>-rays in coincidence has been developed at TIFR Mumbai, by coupling an annular double-sided segmented Si detector with an array of Compton-suppressed clover HPGe detectors. Digital data acquisition system has been configured for the setup, which has been calibrated and tested using the ²²⁹Th radioactive source that emits <span><math><mi>α</mi></math></span>-particles along with <span><math><mi>γ</mi></math></span>-rays. The functionality and performance of the coincidence apparatus for Doppler correction of <span><math><mi>γ</mi></math></span>-transitions emitted during the in-flight de-excitation of the projectile and the target in the ³⁰Si + ¹⁹⁷Au Coulomb excitation experiment have been demonstrated.</div></div>","PeriodicalId":19359,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment","volume":"1069 ","pages":"Article 169976"},"PeriodicalIF":1.5,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142538857","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":"Development of a high-yield compact D-D neutron generator","authors":"Xiaohou Bai ,&nbsp;Jun Ma ,&nbsp;Zhiyuan Wei ,&nbsp;Jingying Wang ,&nbsp;Xiaoxue Yu ,&nbsp;Shiyu Zhang ,&nbsp;Yongguaung Zheng ,&nbsp;Kang Wu ,&nbsp;Ming Li ,&nbsp;Yaning Han ,&nbsp;Pengqi Zhang ,&nbsp;Junrun Wang ,&nbsp;Zheng Wei ,&nbsp;Zeen Yao ,&nbsp;Yu Zhang","doi":"10.1016/j.nima.2024.169993","DOIUrl":"10.1016/j.nima.2024.169993","url":null,"abstract":"<div><div>An improved high-yield compact D-D neutron generator has been developed for active neutron non-destructive interrogation at Lanzhou University in China. The generator has been meticulously designed based on the magnetic field distribution of the duoplasmatron ion source, the electric field distribution of the beam extraction acceleration system, beam transport, and target cooling system. The performance characteristics of the generator were measured under different deuterium beam energies and beam intensities. The experimental results indicated that the D-D neutron yield reached 1 × 10⁹ n/s with the deuterium beam parameter of 210 keV/6.0 mA. The operational stability of the generator was assessed for 150 min, and the test results show that the generator has better stability in operation. This generator has potential applications in neutron radiography, active interrogation of special nuclear materials, and neutron activation analysis.</div></div>","PeriodicalId":19359,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment","volume":"1069 ","pages":"Article 169993"},"PeriodicalIF":1.5,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142538860","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":"Development of a low energy loss micro-channel plate based position-sensitive detector for the Rare Radio-Isotope Ring","authors":"G. Hudson-Chang ,&nbsp;S. Naimi ,&nbsp;Y. Abe ,&nbsp;R. Crane ,&nbsp;H.F. Li ,&nbsp;T. Moriguchi ,&nbsp;M. Mukai ,&nbsp;D. Nagae ,&nbsp;A. Ozawa ,&nbsp;S. Suzuki ,&nbsp;T. Uesaka ,&nbsp;T. Yamaguchi ,&nbsp;Y. Yamaguchi ,&nbsp;A. Yano","doi":"10.1016/j.nima.2024.169980","DOIUrl":"10.1016/j.nima.2024.169980","url":null,"abstract":"<div><div>A position-sensitive micro-channel plate type detector has been developed for use in the Rare Radio-Isotope Ring at RIKEN, Japan. It uses secondary electrons emitted from a conversion foil and deflected at 90° to create a position signal. Design constraints included operation in a high-vacuum, a large area to cover the ring acceptance and low beam interaction to reduce energy loss. It must achieve a precision sufficient to measure the in-ring dispersion and perform position diagnostics for tuning the injection. Reducing the time-of-flight of secondary electrons was principal in improving resolution as it reduces their final Gaussian spread. This was implemented by compacting the geometry of the detector and raising the acceleration potential. Electric field homogeneity was also improved by decreasing the electrostatic grid wire pitch from 2 mm to 1 mm. Offline tests with alpha sources and online tests with a 200 MeV/u ⁸⁴Kr beam were conducted, reaching a final average position resolution of <span><math><mi>σ</mi></math></span> = 1.3 mm. This is sufficient for conducting beam diagnostics in the storage ring.</div></div>","PeriodicalId":19359,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment","volume":"1069 ","pages":"Article 169980"},"PeriodicalIF":1.5,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142538842","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Variable-energy cocktail beam technology for investigating synergistic damage in nuclear materials on LEAF platform","authors":"Y.H. Zhai ,&nbsp;Y. Yang ,&nbsp;Y. Liu ,&nbsp;L.T. Sun ,&nbsp;W.H. Zhang ,&nbsp;P. Zhang ,&nbsp;Z.Y. Xu ,&nbsp;B. Zhang ,&nbsp;Y. Tang ,&nbsp;L. Jing ,&nbsp;Z.Y. Hou ,&nbsp;H. Dai ,&nbsp;Z.H. Jia ,&nbsp;H.W. Zhao","doi":"10.1016/j.nima.2024.169987","DOIUrl":"10.1016/j.nima.2024.169987","url":null,"abstract":"<div><div>This study addresses the critical issue of synergistic radiation damage in structural materials of fusion reactors, focusing on the interaction between the displacement defects and transmutation-produced hydrogen and helium. These effects are simulated and investigated by employing the advanced multi-beam ion implantation capabilities of the LEAF (Low Energy high intensity highly charged ion Accelerator Facility) platform. Firstly, high-intensity cocktail beams, such as “⁴He⁺ and ⁵⁶Fe¹⁴⁺\" and “⁴He⁺ and ⁵⁸Ni¹⁵⁺\", are generated and characterized successfully. Then, a complex radiation environment is mimicked within the fusion reactors by applying variable-energy irradiation. Secondly, similar penetration depths for different ions, which are crucial for studying synergistic effects, are obtained by precisely controlling the energy of the cocktail beams through the innovative energy modulation system of the LEAF platform. Finally, the post-irradiation analyses, performed by using the transmission electron microscopy (TEM) and nanoindentation, revealed distinct microstructural changes and alterations in material properties, providing insights into the degradation mechanisms under irradiation. This work not only generates diverse and high-intensity “cocktail” ion beams but also achieves rapid energy switching of the beams. Further, the work is expected to pave the way for the implementation of a novel multi-beam irradiation technique in advanced heavy-ion linear accelerators, and also to provide innovative experimental methods and technical support for studying the synergistic effects of nuclear materials.</div></div>","PeriodicalId":19359,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment","volume":"1069 ","pages":"Article 169987"},"PeriodicalIF":1.5,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142538750","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":"A double-sided 3D trench electrode detector using an 8-inch CMOS process: 3D simulation and experimental investigation","authors":"Manwen Liu ,&nbsp;Shuai Jiang ,&nbsp;Wenzheng Cheng ,&nbsp;Huimin Ji ,&nbsp;Zhihua Li ,&nbsp;Zheng Li","doi":"10.1016/j.nima.2024.169943","DOIUrl":"10.1016/j.nima.2024.169943","url":null,"abstract":"<div><div>A double-sided 3D trench electrode detector (DS-3DTED) structure is proposed in this work to investigate the manufacturing process implementation of 3D detectors for high-energy physics, x-ray spectroscopy and x-ray cosmology applications. The device's electrical characterization, including electrostatic potential and electric field distributions, I–V, C–V, full depletion voltage and transient current with x-ray incidence, was performed with Synopsys® Sentaurus TCAD tools. In addition, a manufacturing method to realize the DS-3DTED device is presented. A 311 μm deep trench has been achieved through the Bosch process on the IMECAS 8-inch CMOS platform to verify the feasibility of the device structure. The maximum depth-to-width ratio is close to 105:1 when the trench width is 2 μm, which is an excellent foundation for manufacturing future 3D detector with a large fill factor and small dead region.</div></div>","PeriodicalId":19359,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment","volume":"1070 ","pages":"Article 169943"},"PeriodicalIF":1.5,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142578790","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":"Evaluation of new Li2CaSiO4:Eu/ scintillation plastic phoswich for combined alpha-beta and gamma-neutron detectors","authors":"A. Fedorov ,&nbsp;A. Bondarau ,&nbsp;E. Borisevich ,&nbsp;I. Lagutskiy ,&nbsp;I. Komendo ,&nbsp;V. Kozemyakin ,&nbsp;E. Litvinovich ,&nbsp;V. Mechinsky ,&nbsp;A. Rastimeshin ,&nbsp;V. Retivov ,&nbsp;M. Skorokhvatov ,&nbsp;M. Korzhik","doi":"10.1016/j.nima.2024.169983","DOIUrl":"10.1016/j.nima.2024.169983","url":null,"abstract":"<div><div>A phoswich-type detector element based on a new light inorganic scintillation material, Li₂CaSiO₄:Eu²⁺, and a plastic scintillator, EJ-200, was evaluated for separation of signals of neutrons, <em>β</em>-, <em>α</em>-particles and <em>γ</em>-rays. It has been shown that the use of scintillators in a phoswich with a quite large difference in the scintillation kinetics, by two orders of magnitude, despite the effect of excitation of inorganic material luminescence by scintillation of plastic, provides reliable discrimination of signals from the layers of the phoswich detector. The developed approach to constructing a detecting element can find applications for discrimination of <em>α</em>- and <em>β</em>-particles, as well as neutrons and <em>γ</em>-rays in combined <em>α</em>/<em>β</em> and <em>γ</em>-neutron detectors for radiometry and dosimetry. The separation of signals and measurement of the response when recording interaction products in the reverse <em>β</em>-decay reaction are of particular interest.</div></div>","PeriodicalId":19359,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment","volume":"1069 ","pages":"Article 169983"},"PeriodicalIF":1.5,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142445501","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":"Full inverse Compton Scattering: Total transfer of energy and momentum from electrons to photons","authors":"L. Serafini ,&nbsp;V. Petrillo ,&nbsp;S. Samsam","doi":"10.1016/j.nima.2024.169964","DOIUrl":"10.1016/j.nima.2024.169964","url":null,"abstract":"<div><div>In this article we discuss a peculiar regime of Compton Scattering that assures the maximum transfer of energy and momentum from free electrons propagating in vacuum to the scattered photons. We name this regime Full Inverse Compton Scattering (FICS) because it is characterized by the maximum and full energy loss of the electrons in collision with photons: up to 100% of the electron kinetic energy is indeed transferred to the photon. In the case of relativistic electrons, characterized by a large Lorentz factor (<span><math><mrow><mi>γ</mi><mo>≫</mo><mn>1</mn></mrow></math></span>), FICS regime corresponds to an incident photon energy equal to <span><math><mfrac><mrow><msub><mrow><mi>m</mi></mrow><mrow><mi>e</mi></mrow></msub><msup><mrow><mi>c</mi></mrow><mrow><mn>2</mn></mrow></msup></mrow><mrow><mn>2</mn></mrow></mfrac></math></span>, i.e. approximately 255.5 keV. We interpret such an astonishing result as FICS being the time reversal of direct Compton Scattering of very energetic photons (of energy much greater than <span><math><mrow><msub><mrow><mi>m</mi></mrow><mrow><mi>e</mi></mrow></msub><msup><mrow><mi>c</mi></mrow><mrow><mn>2</mn></mrow></msup></mrow></math></span>) onto atomic electrons. Although the cross section of Compton scattering is decreasing with the energy of the incident photon, making the process less probable with respect to other reactions (pair production, nuclear reactions, etc.) when high energetic photons are bombarding a target, the kinematics straightforwardly implies that the back-scattered photons would have an energy reaching asymptotically <span><math><mfrac><mrow><msub><mrow><mi>m</mi></mrow><mrow><mi>e</mi></mrow></msub><msup><mrow><mi>c</mi></mrow><mrow><mn>2</mn></mrow></msup></mrow><mrow><mn>2</mn></mrow></mfrac></math></span>. FICS is instead the unique suitable working point in Compton scattering for achieving the total transfer of (kinetic) energy exactly from the electron to the photon. Experiencing transitions from the initial momentum to zero in the laboratory system, in FICS the electron is also subject to very large negative acceleration; this fact can lead to possible experiments of sensing the Unruh temperature and related photon bath. On the other side of the energy dynamic range, low relativistic electrons can be completely stopped by moderate energy photons (tens of keV), leading to full exchange of temperature between electron clouds and photon baths. Cosmic gamma ray sources can be affected in their evolution by this peculiar FICS regime of Compton scattering.</div></div>","PeriodicalId":19359,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment","volume":"1069 ","pages":"Article 169964"},"PeriodicalIF":1.5,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142538752","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}