Nuclear Physics APub Date : 2025-02-14DOI: 10.1016/j.nuclphysa.2025.123042
J. Williams , G. Hackman , K. Starosta , R.S. Lubna , Priyanka Choudhary , S. Sahoo , P.C. Srivastava , C. Andreoiu , D. Annen , H. Asch , M.D.H.K.G. Badanage , G.C. Ball , M. Beuschlein , H. Bidaman , V. Bildstein , R. Coleman , A.B. Garnsworthy , B. Greaves , G. Leckenby , V. Karayonchev , Z. Yu
{"title":"Cross-shell excited states in 32Si and 29Al populated using fusion-evaporation","authors":"J. Williams , G. Hackman , K. Starosta , R.S. Lubna , Priyanka Choudhary , S. Sahoo , P.C. Srivastava , C. Andreoiu , D. Annen , H. Asch , M.D.H.K.G. Badanage , G.C. Ball , M. Beuschlein , H. Bidaman , V. Bildstein , R. Coleman , A.B. Garnsworthy , B. Greaves , G. Leckenby , V. Karayonchev , Z. Yu","doi":"10.1016/j.nuclphysa.2025.123042","DOIUrl":"10.1016/j.nuclphysa.2025.123042","url":null,"abstract":"<div><div>In the neutron-rich <em>sd</em> shell near the <span><math><mi>N</mi><mo>=</mo><mn>20</mn></math></span> ‘island of inversion’, the evolution of the <span><math><mi>N</mi><mo>=</mo><mn>20</mn></math></span> shell gap is indicated by the energies of negative-parity states which primarily arise due to single neutron excitation to higher lying orbitals across the shell gap. These negative-parity states often have high spin (due to the participation of the <span><math><mn>0</mn><msub><mrow><mi>f</mi></mrow><mrow><mn>7</mn><mo>/</mo><mn>2</mn></mrow></msub></math></span> orbital) and are therefore preferentially populated using fusion-evaporation reactions. We have studied the intermediate energy levels of <sup>32</sup>Si and <sup>29</sup>Al using <sup>12</sup>C(<sup>22</sup>Ne,2p) and <sup>12</sup>C(<sup>22</sup>Ne,<em>α</em>p) reactions, identifying several negative-parity states in both nuclides.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1057 ","pages":"Article 123042"},"PeriodicalIF":1.7,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143427632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}
Nuclear Physics APub Date : 2025-02-14DOI: 10.1016/j.nuclphysa.2025.123038
A.B. McIntosh , A.D. Abbott , M.Q. Sorensen , K. Hagel , A. Couture , J. Gauthier , S. Ota , A. Alvarez , S. Balakrishnan , R. Ghimire , M. Grinder , I. Jeanis , T. King , L.A. McIntosh , S. Mosby , S.D. Pain , C. Prokop , A. Ratkiewicz , S. Regener , A. Rodriguez-Manso , S.J. Yennello
{"title":"Development of the detector array for photons, protons, and exotic residues","authors":"A.B. McIntosh , A.D. Abbott , M.Q. Sorensen , K. Hagel , A. Couture , J. Gauthier , S. Ota , A. Alvarez , S. Balakrishnan , R. Ghimire , M. Grinder , I. Jeanis , T. King , L.A. McIntosh , S. Mosby , S.D. Pain , C. Prokop , A. Ratkiewicz , S. Regener , A. Rodriguez-Manso , S.J. Yennello","doi":"10.1016/j.nuclphysa.2025.123038","DOIUrl":"10.1016/j.nuclphysa.2025.123038","url":null,"abstract":"<div><div>Accurate neutron capture predictions are needed in fundamental and applied science. Empirical models are constrained largely for stable nuclei, but predictions far from stability are needed. Neutron transfer in (d, p) reactions in inverse kinematics with rare isotope beams offers a means to access key aspects of the capture process. To this end, the detector array for photons, protons, and exotic residues (DAPPER) has been designed, built, tested, and used for measurement at Texas A&M University.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1057 ","pages":"Article 123038"},"PeriodicalIF":1.7,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143445542","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}
Nuclear Physics APub Date : 2025-02-13DOI: 10.1016/j.nuclphysa.2025.123033
Ramutis Kazys Kalinauskas , Augustinas Stepšys , Darius Germanas , Saulius Mickevičius
{"title":"Calculation of harmonic oscillator brackets in SU(3) basis","authors":"Ramutis Kazys Kalinauskas , Augustinas Stepšys , Darius Germanas , Saulius Mickevičius","doi":"10.1016/j.nuclphysa.2025.123033","DOIUrl":"10.1016/j.nuclphysa.2025.123033","url":null,"abstract":"<div><div>We present a new approach for the Talmi-Moshinsky transformation representation in the harmonic oscillator basis. We utilize the SU(3) scheme for calculation of harmonic oscillator brackets. Using this scheme we obtain the explicit relations for numeric evaluation and present a computational approach.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1056 ","pages":"Article 123033"},"PeriodicalIF":1.7,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143422742","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}
Nuclear Physics APub Date : 2025-02-11DOI: 10.1016/j.nuclphysa.2025.123031
Ashok Kumar Mondal, Sathi Sharma
{"title":"Re-evaluation of the 26Si(p,γ)27P astrophysical reaction rate","authors":"Ashok Kumar Mondal, Sathi Sharma","doi":"10.1016/j.nuclphysa.2025.123031","DOIUrl":"10.1016/j.nuclphysa.2025.123031","url":null,"abstract":"<div><div>In this work, we re-evaluate the reaction rate for the <sup>26</sup>Si(p,<em>γ</em>)<sup>27</sup>P process, motivated by discrepancies in previous studies regarding key parameters such as <span><math><msub><mrow><mi>Γ</mi></mrow><mrow><mi>γ</mi></mrow></msub></math></span>, <span><math><msub><mrow><mi>Γ</mi></mrow><mrow><mi>p</mi></mrow></msub></math></span>, <em>ωγ</em>, and the S - factor at zero energy, S(0). Using the NuShellX code with the newly developed USDCm interaction <span><span>[20]</span></span>, we performed shell model calculations to reproduce energy levels and calculate spectroscopic factors for various states. The gamma width (<span><math><msub><mrow><mi>Γ</mi></mrow><mrow><mi>γ</mi></mrow></msub></math></span>) values for the 3/2<sup>+</sup> and 5/2<sup>+</sup> states were determined using shell model calculations. Additionally, we employed the WSPOT code to analyze scattering cross-sections and phase shifts to compute the proton width (<span><math><msub><mrow><mi>Γ</mi></mrow><mrow><mi>p</mi></mrow></msub></math></span>) values. After that, we have calculated the resonance strength (<em>ωγ</em>) values for 3/2<sup>+</sup> and 5/2<sup>+</sup> states respectively. Here, we have utilized the RADCAP code to calculate the S - factor at zero energy, S(0). Finally, we computed the reaction rates across a temperature range of 0.1 - 2 GK. Our results provide a refined understanding of the <sup>26</sup>Si(p,<em>γ</em>)<sup>27</sup>P reaction rate, addressing inconsistencies in previous studies.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1056 ","pages":"Article 123031"},"PeriodicalIF":1.7,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143395325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}
Nuclear Physics APub Date : 2025-02-03DOI: 10.1016/j.nuclphysa.2025.123024
A. Hannaman , B. Harvey , K. Hagel , A.B. McIntosh , A. Abbott , L. Bills , A. Fentress , J. Gauthier , T. Hankins , Y.-W. Lui , L.A. McIntosh , S. Regener , R. Rider , S. Schultz , M.Q. Sorensen , J. Tobar , Z. Tobin , S. Yennello
{"title":"Upper bounds on the production cross section of toroidally deformed nuclei","authors":"A. Hannaman , B. Harvey , K. Hagel , A.B. McIntosh , A. Abbott , L. Bills , A. Fentress , J. Gauthier , T. Hankins , Y.-W. Lui , L.A. McIntosh , S. Regener , R. Rider , S. Schultz , M.Q. Sorensen , J. Tobar , Z. Tobin , S. Yennello","doi":"10.1016/j.nuclphysa.2025.123024","DOIUrl":"10.1016/j.nuclphysa.2025.123024","url":null,"abstract":"<div><div>Ground state nuclei usually have compact geometries. However, there have been theoretical predictions that excited nuclei can take on more extended shapes such as toroids or bubbles. There have been many attempts to identify signatures of such shapes in experimental data. One signature, both predicted by theory and sought by experimental data, is narrow resonances at high excitation energy in peripheral intermediate-energy heavy-ion collisions. Potential evidence for toroidal states was reported in the alpha particle disassembly of <sup>28</sup>Si after collision with a <sup>12</sup>C target at 35 MeV/nucleon. The prior work was limited by angular resolution and statistical uncertainties. The present work aims to measure the excitation energy distribution for these disassembly events with improved angular resolution and reduced statistical uncertainty using the Forward Array Using Silicon Technology (FAUST). FAUST is equipped with resistive dual-axis duo-lateral (DADL) position-sensitive silicon detectors capable of sub-millimeter position resolution. The measured excitation energy distributions of 7-<em>α</em> disassembly events showed no strong evidence for highly excited states at the cross section and widths suggested by previous experiment. A statistical likelihood analysis was performed to provide an upper limit to toroidal high-spin isomer cross section, as evidenced by this observable, as a function of the excitation energy and width of potential states.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1056 ","pages":"Article 123024"},"PeriodicalIF":1.7,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143387320","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}
Nuclear Physics APub Date : 2025-01-27DOI: 10.1016/j.nuclphysa.2025.123022
L. Ponnath , T. Aumann , C.A. Bertulani , R. Gernhäuser , T. Almusidi , H. Alvarez-Pol , L. Atar , L. Atkins , Y. Ayyad , J. Benlliure , K. Boretzky , M.J.G. Borge , L.T. Bott , G. Bruni , B. Brückner , P. Cabanelas , C. Caesar , E. Casarejos , J. Cederkall , A. Corsi , F. Wamers
{"title":"Precise measurement of nuclear interaction cross sections towards neutron-skin determination with R3B","authors":"L. Ponnath , T. Aumann , C.A. Bertulani , R. Gernhäuser , T. Almusidi , H. Alvarez-Pol , L. Atar , L. Atkins , Y. Ayyad , J. Benlliure , K. Boretzky , M.J.G. Borge , L.T. Bott , G. Bruni , B. Brückner , P. Cabanelas , C. Caesar , E. Casarejos , J. Cederkall , A. Corsi , F. Wamers","doi":"10.1016/j.nuclphysa.2025.123022","DOIUrl":"10.1016/j.nuclphysa.2025.123022","url":null,"abstract":"<div><div>The R<sup>3</sup>B (Reactions with Relativistic Radioactive Beams) experiment as a major instrument of the NUSTAR collaboration for the research facility FAIR in Darmstadt is designed for kinematically complete studies of reactions with high-energy radioactive beams. Part of the broad physics program of R<sup>3</sup>B is to constrain the asymmetry term in the nuclear equation-of-state and hence improve the description of highly asymmetric nuclear matter (e.g., in neutron stars). For a precise determination of the neutron-skin thickness – an observable which is directly correlated with the symmetry energy in theoretical calculations – by measuring absolute fragmentation cross sections, it is essential to quantify the uncertainty and challenge the reaction model under stable conditions. During the successful FAIR Phase-0 campaign of R<sup>3</sup>B, we precisely measured the energy dependence of total interaction cross sections in <sup>12</sup>C+<sup>12</sup>C collisions, for a direct comparison with calculations based on the eikonal reaction theory.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1056 ","pages":"Article 123022"},"PeriodicalIF":1.7,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143211112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}
Nuclear Physics APub Date : 2025-01-24DOI: 10.1016/j.nuclphysa.2025.123023
S. Pigliapoco , M.L. Cortés , F. Recchia , S.M. Lenzi , M.A. Bentley , P. Doornenbal , A. Jungclaus , K. Wimmer , L. Zago , D. Rudolph , F. Browne , T. Koiwai , H. Sakurai , T. Arici , A. Fernández , J.A. Tostevin , N. Imai , N. Kitamura , B. Longfellow , R. Lozeva , R. Yajzey
{"title":"Isospin symmetry investigation of the proton-unbound nucleus T = 3/2 55Cu","authors":"S. Pigliapoco , M.L. Cortés , F. Recchia , S.M. Lenzi , M.A. Bentley , P. Doornenbal , A. Jungclaus , K. Wimmer , L. Zago , D. Rudolph , F. Browne , T. Koiwai , H. Sakurai , T. Arici , A. Fernández , J.A. Tostevin , N. Imai , N. Kitamura , B. Longfellow , R. Lozeva , R. Yajzey","doi":"10.1016/j.nuclphysa.2025.123023","DOIUrl":"10.1016/j.nuclphysa.2025.123023","url":null,"abstract":"<div><div>This study reports the status of the first in-beam <em>γ</em>-ray spectroscopic study of excited states in the exotic neutron-deficient <span><math><msub><mrow><mi>T</mi></mrow><mrow><mi>z</mi></mrow></msub><mo>=</mo></math></span>-3/2 nucleus <sup>55</sup>Cu. The nucleus was produced via knock-out reactions at the Radioactive Isotope Beam Factory, located at the RIKEN-Nishina Center. Several <em>γ</em>-ray transitions were detected using the DALI2<sup>+</sup> <em>γ</em>-ray detector array. The comparison with isobaric analogue states in the mirror nucleus <sup>55</sup>Fe will provide valuable insights into isospin-non-conserving effects beyond nuclear stability. The proton occupation of the 1<span><math><msub><mrow><mi>p</mi></mrow><mrow><mn>3</mn><mo>/</mo><mn>2</mn></mrow></msub></math></span> orbital is expected to play a significant effect on the orbital's charge radius due to the isovector monopole polarizability, which can be linked to the measured mirror energy differences.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1056 ","pages":"Article 123023"},"PeriodicalIF":1.7,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143444269","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}
Nuclear Physics APub Date : 2025-01-23DOI: 10.1016/j.nuclphysa.2025.123021
Teeba M. Talib , Fouad A. Majeed
{"title":"Study of the nuclear structure of some FP-shell nuclei with Skyrme effective interaction","authors":"Teeba M. Talib , Fouad A. Majeed","doi":"10.1016/j.nuclphysa.2025.123021","DOIUrl":"10.1016/j.nuclphysa.2025.123021","url":null,"abstract":"<div><div>The nuclear structure properties, including elastic and inelastic form factors, were investigated for <sup>44</sup>Ca, <sup>58</sup>Ni, <sup>62</sup>Ni, and <sup>64</sup>Zn using shell model calculations with the NushellX@MSU code. These nuclei belong to the FP-shell region, and the Skyrme effective interaction (Sk28, Sk35, Sk43) was employed alongside the GXPF1A and JUN45 effective interactions in the model space. The model space for <sup>44</sup>Ca (2p3/2, 1f7/2, 1f5/2, 2p1/2), while JUN45 take the model space of (2p3/2, 1f5/2, 2p1/2, 1 g9/2). To refine the form factors calculations, the Tassie model was applied with appropriate proton and neutron effective charges, incorporating core-polarization (CP) effects. The calculated form factors were compared with experimental data and existing theoretical models. This study offers a comprehensive analysis of CP effects on form factors and demonstrates the reliability of the theoretical frameworks used.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1056 ","pages":"Article 123021"},"PeriodicalIF":1.7,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143444268","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}
Nuclear Physics APub Date : 2025-01-15DOI: 10.1016/j.nuclphysa.2025.123020
F.M. Rafiei, O.N. Ghodsi
{"title":"Investigation of the correlation between the distribution of surface nucleons and incompressibility of nuclear matter in the 40Ca+40Ca reaction","authors":"F.M. Rafiei, O.N. Ghodsi","doi":"10.1016/j.nuclphysa.2025.123020","DOIUrl":"10.1016/j.nuclphysa.2025.123020","url":null,"abstract":"<div><div>This work examines the relation between the bulk incompressibility of nuclear matter, <em>K</em>, and the surface nucleon distribution during the reaction process. Taking into account Pauli exclusion corrections, the double-folding (DF) formalism with the different density-dependent M3Y forces is applied to the analysis of the symmetric reaction of <sup>40</sup>Ca+<sup>40</sup>Ca. Changes in the surface density distributions of protons and neutrons are found to be strongly correlated with changes in the bulk incompressibility. The obtained results suggest that, in addition to the symmetry energy slope, the quantity of neutron skin thickness (NST) may have a correlation with <em>K</em> values when evaluated utilizing heavy ion reactions. This constraint is caused by the influence of the bulk nuclear matter incompressibility on the surface nucleon distribution during the fusion reaction.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1055 ","pages":"Article 123020"},"PeriodicalIF":1.7,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143154197","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}
Nuclear Physics APub Date : 2025-01-14DOI: 10.1016/j.nuclphysa.2025.123019
N. Susshma , R. Gowrishankar , S. Deepa , K. Vijay Sai , S. Chatterjee , A. Sharma , S.S. Ghugre , Shabir Dar , S. Das , S. Basu , S. Nandi , S. Bhattacharya , S.S. Nayak , G. Mukherjee , S. Bhattacharyya , R.P. Singh , G.H. Bhat , J.A. Sheikh , S. Jehangir , R. Raut
{"title":"Shape transition and development of triaxiality in 154Tb","authors":"N. Susshma , R. Gowrishankar , S. Deepa , K. Vijay Sai , S. Chatterjee , A. Sharma , S.S. Ghugre , Shabir Dar , S. Das , S. Basu , S. Nandi , S. Bhattacharya , S.S. Nayak , G. Mukherjee , S. Bhattacharyya , R.P. Singh , G.H. Bhat , J.A. Sheikh , S. Jehangir , R. Raut","doi":"10.1016/j.nuclphysa.2025.123019","DOIUrl":"10.1016/j.nuclphysa.2025.123019","url":null,"abstract":"<div><div>Two previously known bands in the excitation scheme of the <sup>154</sup>Tb nucleus have been investigated for the multipolarity and the electric/magnetic nature of the intra- and inter-band transitions. The excited states of the nucleus were populated in an <em>α</em>-beam induced reaction and the <em>γ</em>-rays emitted therefrom were detected using an array of Compton suppressed HPGe clover detectors. The experimental findings are indicative of a shape evolution of the nucleus and development of strong triaxiality at higher spins. The multipolarities of the inter-band transitions brings forth the same. Total Routhian Surface (TRS) calculations and those in the framework of Triaxial Projected Shell Model (TPSM) have been carried out and the results corroborate the proposition on triaxiality.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1055 ","pages":"Article 123019"},"PeriodicalIF":1.7,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143153591","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
