Atomic Data and Nuclear Data Tables最新文献

{"title":"Triaxial nuclear shapes from simple ratios of electric-quadrupole matrix elements","authors":"Elena Atanassova Lawrie ,&nbsp;José Nicolás Orce","doi":"10.1016/j.adt.2025.101730","DOIUrl":"10.1016/j.adt.2025.101730","url":null,"abstract":"<div><div>Theoretical models often invoke axially-asymmetric nuclear shapes to explain elusive collective phenomena, but such an assumption is not always easy to confirm experimentally. The only model-independent measurement of the nuclear axial asymmetry (or triaxiality) <span><math><mi>γ</mi></math></span> is based on rotational invariants of zero-coupled products of the electric-quadrupole (<span>E2</span>) operator — the Kumar-Cline sum rule analysis — which generally requires knowledge of a large number of <span>E2</span> matrix elements connecting the state of interest. We propose an alternative method to determine <span><math><mi>γ</mi></math></span> using only two <span>E2</span> matrix elements, which are among the easiest to measure. This approach is based on a standard rotational description of a nucleus with stable triaxial deformation, where all underlying assumptions are either empirically proven or unnecessary. It is applied to the 2<span><math><msup><mrow></mrow><mrow><mo>+</mo></mrow></msup></math></span> states of the ground-state and the <span><math><mi>γ</mi></math></span> bands of even–even nuclei and is model-independent provided these 2<span><math><msup><mrow></mrow><mrow><mo>+</mo></mrow></msup></math></span> states have rotational nature. This technique was applied to a number of deformed even–even nuclei for which the ratio of the energies of the yrast 4<span><math><msup><mrow></mrow><mrow><mo>+</mo></mrow></msup></math></span> and 2<span><math><msup><mrow></mrow><mrow><mo>+</mo></mrow></msup></math></span> states was <span><math><mrow><msub><mrow><mi>R</mi></mrow><mrow><msub><mrow></mrow><mrow><mn>4</mn><mo>/</mo><mn>2</mn></mrow></msub></mrow></msub><mo>&gt;</mo></mrow></math></span> 2.4. Where sufficient experimental data were available for performing Kumar-Cline analysis, good agreement was observed between the <span><math><mi>γ</mi></math></span> values deduced in these two approaches. The agreement shows that (i) the 2<span><math><msup><mrow></mrow><mrow><mo>+</mo></mrow></msup></math></span> states of the selected nuclei have indeed rotational nature, and (ii) the proposed method represents a simple and reliable deduction of <span><math><mi>γ</mi></math></span>. In the present work more than 60 even–even rotating nuclei were associated with axially-asymmetric nuclear shapes.</div></div>","PeriodicalId":55580,"journal":{"name":"Atomic Data and Nuclear Data Tables","volume":"164 ","pages":"Article 101730"},"PeriodicalIF":2.7,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144138722","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":"L-subshell experimental Coster–Kronig probabilities and Auger decays for elements in the atomic number range 28≤Z≤100","authors":"S. Meddah ,&nbsp;A. Kahoul ,&nbsp;F. Parente ,&nbsp;S. Daoudi ,&nbsp;J.P. Marques ,&nbsp;J.M. Sampaio ,&nbsp;S. Croft ,&nbsp;A. Favalli ,&nbsp;Y. Kasri ,&nbsp;N. Kup Aylikci ,&nbsp;V. Aylikci ,&nbsp;A. Hamidani","doi":"10.1016/j.adt.2025.101731","DOIUrl":"10.1016/j.adt.2025.101731","url":null,"abstract":"<div><div>This article compiles an extensive dataset on L subshell Coster-Kronig (C-K) and Auger decays (AD). This paper's primary objective is to aggregate 1058 experimental values from literature covering the years 1955 to 2024, taken from 130 scholarly articles and presenting them in seven tables. The reported values are systematically organized and provided with their associated errors in two to four-digit format. Additionally, the tables include computed weighted average values, uncertainty values, combined standard deviations, and average <em>z</em>-scores. The dataset refers to elements from ₂₈Ni to ₁₀₀Fm, investigated under photon bombardment. The compiled experimental data distribution includes most elements. Nevertheless, there were some isolated cases where either no data or fewer than two data points were present.</div></div>","PeriodicalId":55580,"journal":{"name":"Atomic Data and Nuclear Data Tables","volume":"164 ","pages":"Article 101731"},"PeriodicalIF":2.7,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144138721","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":"Extended calculations of energy levels, radiative properties, and lifetimes for phosphorus-like Se XX","authors":"Kai Wang ,&nbsp;Xuan Bai ,&nbsp;Chong Yang Chen ,&nbsp;Jun Yan","doi":"10.1016/j.adt.2025.101729","DOIUrl":"10.1016/j.adt.2025.101729","url":null,"abstract":"<div><div>Highly accurate calculations are performed for the lowest 151 fine-structure levels arising from the <span><math><mrow><mn>3</mn><msup><mrow><mi>s</mi></mrow><mrow><mn>2</mn></mrow></msup><mn>3</mn><msup><mrow><mi>p</mi></mrow><mrow><mn>3</mn></mrow></msup></mrow></math></span>, <span><math><mrow><mn>3</mn><mi>s</mi><mn>3</mn><msup><mrow><mi>p</mi></mrow><mrow><mn>4</mn></mrow></msup></mrow></math></span>, <span><math><mrow><mn>3</mn><msup><mrow><mi>s</mi></mrow><mrow><mn>2</mn></mrow></msup><mn>3</mn><msup><mrow><mi>p</mi></mrow><mrow><mn>2</mn></mrow></msup><mn>3</mn><mi>d</mi></mrow></math></span>, <span><math><mrow><mn>3</mn><mi>s</mi><mn>3</mn><msup><mrow><mi>p</mi></mrow><mrow><mn>3</mn></mrow></msup><mn>3</mn><mi>d</mi></mrow></math></span>, <span><math><mrow><mn>3</mn><msup><mrow><mi>p</mi></mrow><mrow><mn>5</mn></mrow></msup></mrow></math></span> and <span><math><mrow><mn>3</mn><msup><mrow><mi>s</mi></mrow><mrow><mn>2</mn></mrow></msup><mn>3</mn><mi>p</mi><mn>3</mn><msup><mrow><mi>d</mi></mrow><mrow><mn>2</mn></mrow></msup></mrow></math></span> configurations in P-like Se XX using the multiconfiguration Dirac–Hartree–Fock​ and the relativistic configuration interaction methods. Complete and consistent atomic data, including excitation energies, wavelengths, E1, E2, M1, M2 line strengths, oscillator strengths, transition rates, and radiative lifetimes for these 151 levels, are provided. Our data set is compared with the NIST compiled values and other available results. The present data are accurate enough for identification and deblending of emission lines involving the <span><math><mrow><mi>n</mi><mo>=</mo><mn>3</mn></mrow></math></span> levels and are also useful for modeling and diagnosing fusion plasmas. These data can be considered as a benchmark for other calculations.</div></div>","PeriodicalId":55580,"journal":{"name":"Atomic Data and Nuclear Data Tables","volume":"164 ","pages":"Article 101729"},"PeriodicalIF":2.7,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144138720","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":"Elastic cross sections, excitation exchange cross sections, and rate constants for excitation and quenching in N(4S)-N(2D) collisions","authors":"M. Buchowiecki ,&nbsp;Y. Wu ,&nbsp;G.C. Schatz","doi":"10.1016/j.adt.2025.101728","DOIUrl":"10.1016/j.adt.2025.101728","url":null,"abstract":"<div><div>Differential, integrated, and transport cross sections were calculated for collisions involving ground state nitrogen atoms N(⁴S) and first excited state N(²D) nitrogen atoms, based on high quality electronic structure potential curves and couplings. The same data set for the excitation exchange cross section was also calculated.</div><div>The rate constant for excitation in collisions of ground state atoms and the rate constant for quenching (reverse process) in collisions between ground and excited atoms were calculated using a quantum scattering method and compared with the results of the Landau–Zener and Zhu–Nakamura semiclassical methods.</div></div>","PeriodicalId":55580,"journal":{"name":"Atomic Data and Nuclear Data Tables","volume":"164 ","pages":"Article 101728"},"PeriodicalIF":2.7,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144138683","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":"Investigation of α-particle states of 8Be and 12C Nuclei in photonuclear reactions on 12C, 14N and 16O nuclei","authors":"S.N. Afanasiev ,&nbsp;I.O. Afanasieva","doi":"10.1016/j.adt.2025.101716","DOIUrl":"10.1016/j.adt.2025.101716","url":null,"abstract":"<div><div>The method of diffusion chamber in the magnetic field making use of a bremsstrahlung beam with a maximum photon energy of 150 MeV is applied to study the reactions of multiparticle photodisintegration of ¹²C, ¹⁴N and ¹⁶O nuclei with the formation of several α-particles in the final state (¹²С(γ,3α), ¹⁶O(γ,4α) і ¹⁴N(γ,np)3α). An experimental complex with a digital data bank of stereo frames and a set of graphic programs that allows to restore events and carry out physical analysis of the obtained data is created. The distribution of events in regard of the excitation energy of the subsystem of two alpha particles has been measured. For all three reactions, the resonance is found which is identified as the ground state of the ⁸Be nucleus and the partial channels for the formation of this state have been separated (¹²C(γ,α)⁸Be₀, ¹⁶O(γ,2α)⁸Be₀ and ¹⁴N(γ,np)α⁸Be₀). For the channels ¹²С(γ,α)⁸Be₀ and ¹⁶О(γ,2α)⁸Be₀, the partial cross-sections are measured. The dependences demonstrate the presence of four maxima, whose positions coincide for both reactions. The rcorrelation between the energy E_γ corresponding to the cross-section maximum and the excitation energy E₀ of ⁸Be nucleus is determined as E_γ – Q = E₀, where Q are the threshold values. The obtained results are qualitatively explained in the framework of the model which describes the absorption of a γ-quantum by a virtual α-particle pair. For the channels ¹⁶О(γ,2α)⁸Be₀ and ¹⁴N(γ,np)α⁸Be₀ the distribution of the excitation energy of three α-particles is measured. The maximum is found in the near-threshold 3α-particle region. This maximum can correspond to the Hoyle state of ¹²C nucleus. Events corresponding to the partial channel of the ¹⁴N((γ,np)¹²C*(0⁺) reaction with the subsequent two-particle decay ¹²C→α+⁸Be*(0⁺) are separated, and the energy and angular distributions of α-particles at each decay stage are analyzed. The channel of ¹²C nucleus formation in the Hoyle state in photonuclear reactions has not been identified earlier.</div></div>","PeriodicalId":55580,"journal":{"name":"Atomic Data and Nuclear Data Tables","volume":"163 ","pages":"Article 101716"},"PeriodicalIF":2.7,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143579100","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":"Tables of neutron thermal cross sections, Westcott factors, resonance integrals, Maxwellian averaged cross sections, astrophysical reaction rates, and r-process abundances calculated from the ENDF/B-VIII.1, JEFF-3.3, JENDL-5.0, BROND-3.1, and CENDL-3.2 evaluated data libraries","authors":"B. Pritychenko","doi":"10.1016/j.adt.2025.101708","DOIUrl":"10.1016/j.adt.2025.101708","url":null,"abstract":"<div><div>We present calculations of neutron thermal cross sections, Westcott factors, resonance integrals, Maxwellian-averaged cross sections, astrophysical reaction rates, and solar system <span><math><mi>r</mi></math></span>-process abundances using the latest data from the major evaluated nuclear libraries for 849 ENDF target materials. The recent release of ENDF/B-VIII.1 library, progress in ²⁵²Cf(SF) evaluation, extensive analysis of newly-evaluated neutron reaction cross sections, neutron covariances, and improvements in data processing techniques motivated us to calculate the nuclear industry and neutron physics parameters, produce <span><math><mi>s</mi></math></span>-process Maxwellian-averaged cross sections and astrophysical reaction rates, extract <span><math><mi>r</mi></math></span>-process abundances, systematically calculate uncertainties, and provide additional insights on currently available neutron-induced reaction data.</div></div>","PeriodicalId":55580,"journal":{"name":"Atomic Data and Nuclear Data Tables","volume":"163 ","pages":"Article 101708"},"PeriodicalIF":2.7,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143579098","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":"Theoretical Study on the Infrared and Ultraviolet Spectroscopy of PO+","authors":"Guosen Wang ,&nbsp;Chuanyu Zhang ,&nbsp;Xinlu Cheng ,&nbsp;Hong Zhang","doi":"10.1016/j.adt.2025.101721","DOIUrl":"10.1016/j.adt.2025.101721","url":null,"abstract":"<div><div>In this study, the potential energy function, dipole moment function, and transition dipole moment function of the PO⁺ are computed employing high-precision multi-reference configuration interaction methods. By solving the one-dimensional Schrödinger equation for the nuclei, vibrational and rotational energy levels of eight bound states are obtained, subsequently enabling the calculation of the partition function for the PO⁺ molecule. Combining the partition function with the dipole moment function and transition dipole moment function, spectral lines for the PO⁺ molecule in both the infrared and ultraviolet ranges are computed. The spectral lines in the infrared range primarily originate from vibrational-rotational transitions associated with the <span><math><mrow><msup><mrow><mi>X</mi></mrow><mn>1</mn></msup><msup><mrow><mstyle><mi>Σ</mi></mstyle></mrow><mo>+</mo></msup></mrow></math></span> state, while the spectral lines in the ultraviolet range mainly arise from transitions involving the <span><math><mrow><msup><mrow><mi>X</mi></mrow><mn>1</mn></msup><msup><mrow><mstyle><mi>Σ</mi></mstyle></mrow><mo>+</mo></msup><mo>↔</mo><msup><mrow><mi>C</mi></mrow><mn>1</mn></msup><mstyle><mi>Π</mi></mstyle></mrow></math></span>. At 296 K, the most intense spectral lines in the infrared range are generated by the 0–0 vibrational band(<span><math><mrow><msup><mi>v</mi><mo>′</mo></msup><mo>=</mo><mn>0</mn><mo>,</mo><msup><mi>v</mi><mrow><mo>″</mo></mrow></msup><mo>=</mo><mn>0</mn></mrow></math></span>), while the most intense spectral lines in the ultraviolet range are produced by the 2–0 vibrational band(<span><math><mrow><msup><mi>v</mi><mo>′</mo></msup><mo>=</mo><mn>2</mn><mo>,</mo><msup><mi>v</mi><mrow><mo>″</mo></mrow></msup><mo>=</mo><mn>0</mn></mrow></math></span>). At elevated temperatures, the overall intensity of spectral lines decreases as more energy levels are excited, and the central positions of spectral peaks undergo shifts. This study extensively computed the spectral line data for the PO⁺ molecule, providing crucial data support for astronomical observations.</div></div>","PeriodicalId":55580,"journal":{"name":"Atomic Data and Nuclear Data Tables","volume":"163 ","pages":"Article 101721"},"PeriodicalIF":2.7,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143579101","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":"Differential, integrated, and transport cross sections for elastic collisions between ground state nitrogen and oxygen atoms","authors":"M. Buchowiecki","doi":"10.1016/j.adt.2025.101717","DOIUrl":"10.1016/j.adt.2025.101717","url":null,"abstract":"<div><div>This study presents, for the first time, differential cross sections for collisions of the ground state nitrogen atoms in the energy range of <span><math><mrow><mn>1</mn><msup><mrow><mn>0</mn></mrow><mrow><mo>−</mo><mn>6</mn></mrow></msup><mo>−</mo><mn>3</mn><mo>.</mo><mn>7</mn></mrow></math></span> hartree, and for ground state oxygen atoms in the energy range <span><math><mrow><mn>1</mn><msup><mrow><mn>0</mn></mrow><mrow><mo>−</mo><mn>6</mn></mrow></msup><mo>−</mo><mn>0</mn><mo>.</mo><mn>8</mn></mrow></math></span> hartree. The reported angle and energy ranges for the differential cross sections enable precise integration to determine the integrated and transport cross sections, which are also included in this study. Additionally, a comparison of the resulting collision integrals with findings from other studies is provided, along with a discussion of the uncertainties associated with low-temperature collision integrals, particularly for oxygen.</div></div>","PeriodicalId":55580,"journal":{"name":"Atomic Data and Nuclear Data Tables","volume":"164 ","pages":"Article 101717"},"PeriodicalIF":2.7,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144138682","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":"Energies of I8+ through I12+ low-lying levels","authors":"Karol Kozioł,&nbsp;Jacek Rzadkiewicz","doi":"10.1016/j.adt.2025.101719","DOIUrl":"10.1016/j.adt.2025.101719","url":null,"abstract":"<div><div>High-accuracy Multi-Configuration Dirac–Hartree–Fock with Configuration Interaction calculations of level energies and transition rates have been carried out for iodine I⁸⁺ through I¹²⁺ ions related to the [Kr]4dⁿ (<span><math><mi>n</mi></math></span> = 5−9) configurations. For I¹⁰⁺ through I¹²⁺ ions the present data fill up the lack of such data in the literature.</div></div>","PeriodicalId":55580,"journal":{"name":"Atomic Data and Nuclear Data Tables","volume":"164 ","pages":"Article 101719"},"PeriodicalIF":2.7,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144138719","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":"Resonance energies, strengths, cross sections and linear polarization of x-ray dielectronic satellite lines for resonant recombination processes of Au69+ - Au65+ ions","authors":"Wenliang He ,&nbsp;Luyou Xie ,&nbsp;Shengbo Niu ,&nbsp;Jinglin Rui ,&nbsp;Yulong Ma ,&nbsp;Chenzhong Dong","doi":"10.1016/j.adt.2025.101718","DOIUrl":"10.1016/j.adt.2025.101718","url":null,"abstract":"<div><div>Energy levels, radiative transition rates, autoionization rates, resonance strengths, and state resolved cross sections associated with the <span><math><mrow><mi>Δ</mi><mi>n</mi><mo>=</mo><mn>1</mn></mrow></math></span> (<span><math><mrow><mn>2</mn><mi>s</mi></mrow></math></span>, <span><math><mrow><mn>2</mn><mi>p</mi></mrow></math></span> <span><math><mrow><mo>→</mo><mn>3</mn><mi>l</mi></mrow></math></span>) resonant electronic recombination processes in Ne- to Si-like gold ions (Au<span><math><msup><mrow></mrow><mrow><mn>69</mn><mo>+</mo></mrow></msup></math></span> - Au<span><math><msup><mrow></mrow><mrow><mn>65</mn><mo>+</mo></mrow></msup></math></span>) have been systematically calculated in the isolated resonance approximation using the Flexible Atomic Code based on the relativistic configuration interaction method. The calculations include not only the dominant dielectronic recombination but also higher-order trielectronic and quadruelectronic recombination processes. The calculated energies show excellent agreement with available experimental and theoretical values, with deviation within 0.32%. Additionally, the resonance energies and resonance strengths for prominent resonances align well with existing theoretical data. Using density matrix formalism, we have also calculated the degree of linear polarization for x-ray dielectronic satellite lines produced by the dominant LMM and LMN resonant electronic recombination processes. Further, the differential cross section for Au<span><math><msup><mrow></mrow><mrow><mn>69</mn><mo>+</mo></mrow></msup></math></span> - Au<span><math><msup><mrow></mrow><mrow><mn>65</mn><mo>+</mo></mrow></msup></math></span> ions are discussed and employed to simulate and identify EBIT experimental spectra. These results are expected to be used in the diagnosing high-temperature L-shell gold plasmas and of fusion plasmas in particular.</div></div>","PeriodicalId":55580,"journal":{"name":"Atomic Data and Nuclear Data Tables","volume":"164 ","pages":"Article 101718"},"PeriodicalIF":2.7,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144138718","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}