Atomic Data and Nuclear Data Tables最新文献

{"title":"Critical evaluation of reference charge radii and applications in mirror nuclei","authors":"Ben Ohayon","doi":"10.1016/j.adt.2025.101732","DOIUrl":"10.1016/j.adt.2025.101732","url":null,"abstract":"<div><div>I present a critical review of absolute root-mean-square charge radii of stable nuclei from <span><math><mrow><mi>Z</mi><mo>=</mo><mn>3</mn></mrow></math></span> to <span><math><mrow><mi>Z</mi><mo>=</mo><mn>32</mn></mrow></math></span>, which includes a previously overlooked uncertainty in the combined analysis of muonic x-ray and electron scattering experiments. From these <em>reference radii</em> and isotope shift measurements, I obtain those of 12 mirror pairs with a traceable and realistic uncertainty budget. The difference in radii between mirror nuclei is found to be proportional to the isospin asymmetry, confirming recent calculations by Novario et al. (2023). Assuming that this linear relation holds across the nuclear chart, the fitted proportionality constant, combined with the revised known radii, predicts the radii of 73 previously unknown mirror partners. These are useful e.g., for benchmarking atomic and nuclear theory, calibrating entire chains, and as an input to nuclear beta-decay calculations. The radii of <span><math><mrow><mo>(</mo><mi>T</mi><mo>=</mo><mn>1</mn><mo>,</mo><msub><mrow><mi>T</mi></mrow><mrow><mi>z</mi></mrow></msub><mo>=</mo><mn>0</mn><mo>)</mo></mrow></math></span> nuclei are interpolated assuming negligible isospin symmetry breaking. This completes a model-independent, high-precision extraction of the charge and weak radii of all nuclei involved in the test of the unitarity of the CKM matrix.</div></div>","PeriodicalId":55580,"journal":{"name":"Atomic Data and Nuclear Data Tables","volume":"165 ","pages":"Article 101732"},"PeriodicalIF":2.7,"publicationDate":"2025-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144695312","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":"Nuclear β−-decay with statistical de-excitation","authors":"M.R. Mumpower ,&nbsp;T. Kawano ,&nbsp;O. Korobkin ,&nbsp;G.W. Misch ,&nbsp;T.M. Sprouse","doi":"10.1016/j.adt.2025.101736","DOIUrl":"10.1016/j.adt.2025.101736","url":null,"abstract":"<div><div>The accurate description of nuclear <span><math><msup><mrow><mi>β</mi></mrow><mrow><mo>−</mo></mrow></msup></math></span>-decay has far-reaching consequences for applications spanning nuclear reactors to the creation of heavy elements in astrophysical environments. We present the nuclear particle spectra associated with the <span><math><mi>β</mi></math></span>-decay of neutron-rich nuclei calculated with the well benchmarked coupled Quasi-particle Random Phase Approximation and Hauser–Feshbach (QRPA+HF) model. This approach begins with the population of the daughter nucleus via semi-microscopic Gamow-Teller or First-Forbidden strength distributions (QRPA) and follows the statistical de-excitation (HF) until the initial available excitation energy is exhausted. At each stage of de-excitation the emission by neutrons and <span><math><mi>γ</mi></math></span>-rays is considered obeying quantum mechanical selection rules. For completeness we also provide parsed Auger and Internal Conversion (IC) electron spectra from Evaluated Nuclear Data Files (ENDF). Our results are tabulated and provided in parsable ASCII formatted tables that are suitable for inclusion in various applications.</div></div>","PeriodicalId":55580,"journal":{"name":"Atomic Data and Nuclear Data Tables","volume":"165 ","pages":"Article 101736"},"PeriodicalIF":2.7,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144695314","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":"Review of magnetic- and antimagnetic-rotational structures in nuclei","authors":"Sushil Kumar ,&nbsp;Sukhjeet Singh ,&nbsp;Balraj Singh ,&nbsp;Amita ,&nbsp;Ashok Kumar Jain","doi":"10.1016/j.adt.2025.101735","DOIUrl":"10.1016/j.adt.2025.101735","url":null,"abstract":"<div><div>This work is an update of the 2000 publication of magnetic-rotational bands by Amita et al. [1], followed by an unpublished update of 2006 [2], and reviews detailed experimental data extracted from original publications for 228 magnetic-rotational (MR or Shears) structures spread over 117 nuclides, and 40 antimagnetic-rotational (AMR) structures in 28 nuclei, with a brief commentary about each band. Many of these nuclei are located at or near the semi-magic nucleon numbers, mostly for protons. For example, 88 MR bands are currently known for the Pb (Z=82) nuclei, and 29 AMR band in Pd, Cd and In nuclei. It is interesting that the proton magic numbers appear to play a major role in the MR phenomenon, which seems less well understood. A brief discussion of the salient features of the MR and AMR bands and their theoretical interpretation has been presented in the present review. The tables contain gamma-ray energies, associated level energies with spins and parities, level lifetimes, B(M1), B(E2), and B(M1)/B(E2) ratios and probable spherical quasiparticle configurations. We find that many bands claimed in the literature as MR and AMR bands still have tentative assignments, as level lifetimes, thus B(M1) and B(E2) values, for a large number of MR and AMR bands, which can potentially provide critical criteria for firm identification of such structures, are lacking. Additionally, theoretical model calculations for many of these bands, which could provide insight for a better description of nuclear structure, are also lacking in literature. While this review is mainly based on original research articles, nuclear structure databases ENSDF [3], XUNDL [4], and NSR [5] have been consulted for completeness. The literature cut-off date March 31, 2025.</div></div>","PeriodicalId":55580,"journal":{"name":"Atomic Data and Nuclear Data Tables","volume":"165 ","pages":"Article 101735"},"PeriodicalIF":2.7,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144695311","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":"Point-proton density distributions of stable nuclei","authors":"Tian Yu Wu ,&nbsp;Bao Hua Sun ,&nbsp;Hui Hui Xie ,&nbsp;Jun Yao Xu ,&nbsp;Ge Guo","doi":"10.1016/j.adt.2025.101733","DOIUrl":"10.1016/j.adt.2025.101733","url":null,"abstract":"<div><div>Point-proton density distributions are deduced for 130 stable nuclei from <span><math><mrow><msup><mrow></mrow><mrow><mn>7</mn></mrow></msup><mi>Li</mi></mrow></math></span> to <span><math><mrow><msup><mrow></mrow><mrow><mn>232</mn></mrow></msup><mi>Th</mi></mrow></math></span> from nuclear charge densities determined in elastic electron scattering. There are 171 cases presented in model-dependent forms, including the modified Harmonic-oscillator function, two-parameter Fermi function (2pF), three-parameter Fermi function, three-parameter Gaussian function, and 97 in Fourier-Bessel series model-independent forms. Independent of density functions, the point-proton root-mean-square (rms) radii of the derived point-proton density show excellent agreement with each other. We identify cases where the tabulated data of charge densities and charge radii are inconsistent, and the deduced point-proton density distributions are inaccurate due to insufficient experimental momentum transfer coverage or inconsistent scattering experiments. For the widely used 2pF distribution, it is found that the surface diffuseness parameters can be empirically calculated from those of charge density, while the half-density radius parameters follow the <span><math><msup><mrow><mi>A</mi></mrow><mrow><mn>1</mn><mo>/</mo><mn>3</mn></mrow></msup></math></span> rule. The derived point-proton density distributions can be used as input in nuclear reaction studies and compared with nuclear model predictions.</div></div>","PeriodicalId":55580,"journal":{"name":"Atomic Data and Nuclear Data Tables","volume":"165 ","pages":"Article 101733"},"PeriodicalIF":2.7,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144695313","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":"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}