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Ab Initio Calculation on Spectroscopic Properties and Radiative Lifetimes of Low-Lying Excited States of NaK

Chinese Journal of Chemical Physics 2019年第6期32卷 667-673,I0002页

作者： Shi-yang Zhang Feng Xie Feng-dong Jia Xiao-kang Li Ru-quan Wang Rui Li Yong Wu Zhi-ping Zhong School of Physics University of Chinese Academy of SciencesBeijing 100049China Institute of Nuclear and New Energy Technology Collaborative Innovation Center of Advanced Nuclear Energy TechnologyKey Laboratory of Advanced Reactor Engineering and Safety of Ministry of EducationTsinghua UniversityBeijing 100084China Institute of Physics Chinese Academy of SciencesBeijing 100190China Data Center for High Energy Density Physics Institute of Applied Physics and Computational MathematicsBeijing 100088China Department of Physics College of ScienceQiqihar UniversityQiqihar 161006China CAS Center for Excellence in Topological Quantum Computation University of Chinese Academy of SciencesBeijing 100190China

We performed high-level ab initio calculations on electronic structure of Na K. The potential energy curves (PECs) of 10 Λ-S states correlated with the three lowest dissociation limits have been calculated. On the basis of the calculated PECs, the spectroscopic constants of the boundΛ-S states are obtained, which are in good agreement with experimental results. The maximum vibrational quantum numbers of the singlet ground state X^1Σ^+ and the triplet ground state a^3Σ^+ have been analyzed with the semiclassical scattering theory. Transition properties including transition dipole moments, Franck-Condon factors, and radiative lifetimes have been investigated. The research results indicate that such calculations can provide fairly reliable estimation of parameters for the ultracold alkali diatomic molecular experiment.

关键词： Ultracold dipolar molecule Transition dipole moment Spectroscopic constants Potential curves

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Optical properties of silicon and germanium determined by high-precision analysis of reflection electron energy loss spectroscopy spectra

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Physical Review B 2019年第24期100卷 245209-245209页

作者： L. H. Yang K. Tőkési J. Tóth B. Da H. M. Li Z. J. Ding Hefei National Laboratory for Physical Sciences at Microscale and Department of Physics University of Science and Technology of China Hefei Anhui 230026 People's Republic of China Institute for Nuclear Research Hungarian Academy of Sciences (ATOMKI) Debrecen Hungary Research and Services Division of Materials Data and Integrated System (MaDIS) National Institute for Materials Science (NIMS) 1-2-1 Sengen Tsukuba Ibaraki 305-0047 Japan Supercomputing Center University of Science and Technology of China Hefei Anhui 230026 People's Republic of China

We present a detailed analysis and comparison of four models describing the extension of the electron-energy loss function from the optical limit of q→0 into the (q,ω) plane to obtain the bulk and surface terms of differential inverse inelastic mean free paths. We found that the best model that describes accurately and times efficiently the calculation of the energy loss function of free-electron-like materials is the combination of the Penn algorithm [Phys. Rev. B 35, 482 (1987)] with the Ritchie-Howie method [Philos. Mag. 36, 463 (1977)]. Applying this model in our reverse Monte Carlo method, we determined, with high-precision, electron-energy loss functions of silicon and germanium based on the theoretical analysis of the high-energy resolution reflected electron energy loss spectroscopy (REELS) spectra, measured at 3, 4, and 5 keV incident electron energies. The refractive index n, the extinction coefficient k, and the complex dielectric function (ɛ=ɛ1+iɛ2) were calculated from the obtained energy loss function in a wide energy loss range of 0–200 eV. The accuracy of the obtained results is justified with various sum rules. We found that the calculated optical data of Si and Ge fulfill the sum rules with an average accuracy of 0.11% or even better. Therefore, the use of these optical data in materials science and surface analysis is highly recommended for further applications.

关键词： Dielectric properties Optical conductivity Elemental semiconductors Reflection high-energy electron diffraction

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Observation of the Exotic 02+ Cluster State in He8

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Physical Review Letters 2023年第24期131卷 242501-242501页

作者： Z. H. Yang Y. L. Ye B. Zhou H. Baba R. J. Chen Y. C. Ge B. S. Hu H. Hua D. X. Jiang M. Kimura C. Li K. A. Li J. G. Li Q. T. Li X. Q. Li Z. H. Li J. L. Lou M. Nishimura H. Otsu D. Y. Pang W. L. Pu R. Qiao S. Sakaguchi H. Sakurai Y. Satou Y. Togano K. Tshoo H. Wang S. Wang K. Wei J. Xiao F. R. Xu X. F. Yang K. Yoneda H. B. You T. Zheng School of Physics and State Key Laboratory of Nuclear Physics and Technology Peking University Beijing 100871 China RIKEN Nishina Center 2-1 Hirosawa Wako Saitama 351-0198 Japan Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) Institute of Modern Physics Fudan University Shanghai 200433 China Shanghai Research Center for Theoretical Nuclear Physics NSFC and Fudan University Shanghai 200438 China Department of Physics Hokkaido University 060-0810 Sapporo Japan Institute of Modern Physics Chinese Academy of Science Lanzhou 730000 China Nuclear Reaction Data Centre Hokkaido University 060-0810 Sapporo Japan School of Physics and Beijing Key Laboratory of Advanced Nuclear Materials and Physics Beihang University Beijing 100191 China Department of Physics Kyushu University 819-0395 Fukuoka Japan Rare Isotope Science Project Institute for Basic Science Daejeon 34000 Republic of Korea Department of Physics Tokyo Institute of Technology 2-12-1 Oh-Okayama Meguro Tokyo 152-8551 Japan

We report here the first observation of the 02+ state of He8, which has been predicted to feature the condensatelike α+n2+n2 cluster structure. We show that this state is characterized by a spin parity of 0+, a large isoscalar monopole transition strength, and the emission of a strongly correlated neutron pair, in line with theoretical predictions. Our finding is further supported by the state-of-the-art microscopic α+4n model calculations. The present results may lead to new insights into clustering in neutron-rich nuclear systems and the pair correlation and condensation in quantum many-body systems under strong interactions.

关键词： Direct reactions nuclear structure & decays

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Radiomics based on dual-energy CT for noninvasive prediction of cervical lymph node metastases in patients with nasopharyngeal carcinoma

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Radiography 2025年第4期31卷 102989-102989页

作者： L. Li D. Yang Y. Wu R. Sun Y. Qin M. Kang X. Deng M. Bu Z. Li Z. Zeng X. Zeng M. Jiang B.T. Chen Department of Radiology First Affiliated Hospital of Guangxi Medical University Nanning 530021 Guangxi PR China Department of Radiology Guizhou Provincial People Hospital No.83 East Zhongshan Road Nanming District Guizhou Province 550000 Guiyang PR China Engineering Research Center of Text Computing & Cognitive Intelligence Ministry of Education Key Laboratory of Intelligent Medical Image Analysis and Precise Diagnosis of Guizhou Province State Key Laboratory of Public Big Data College of Computer Science and Technology Guizhou University No. 2870 Huaxi Avenue South Guiyang 550025 Guizhou PR China Department of Nuclear Medicine First Affiliated Hospital of Guangxi Medical University Nanning 530021 Guangxi PR China Department of Radiation Oncology First Affiliated Hospital of Guangxi Medical University Nanning 530021 Guangxi PR China Department of Diagnostic Radiology City of Hope National Medical Center Duarte CA USA

Introduction To develop and validate a machine learning model based on dual-energy computed tomography (DECT) for predicting cervical lymph node metastases (CLNM) in patients diagnosed with nasopharyngeal carcinoma (NPC). Methods This prospective single-center study enrolled patients with NPC and the study assessment included both DECT and 18F-fluorodeoxyglucose positron emission tomography/computed tomography (18F-FDG PET/CT). Radiomics features were extracted from each region of interest (ROI) for cervical lymph nodes using arterial and venous phase images at 100 keV and 150 keV, either individually as non-fusion models or combined as fusion models on the DECT images. The performance of the random forest (RF) models, combined with radiomics features, was evaluated by area under the receiver operating characteristic curve (AUC) analysis. DeLong's test was employed to compare model performances, while decision curve analysis (DCA) assessed the clinical utility of the predictive models. Results Sixty-six patients with NPC were included for analysis, which was divided into a training set (n = 42) and a validation set (n = 22). A total of 13 radiomic models were constructed (4 non-fusion models and 9 fusion models). In the non-fusion models, when the threshold value exceeded 0.4, the venous phase at 100 keV (V100) (AUC, 0.9667; 95 % confidence interval [95 % CI], 0.9363–0.9901) model exhibited a higher net benefit than other non-fusion models. The V100 + V150 fusion model achieved the best performance, with an AUC of 0.9697 (95 % CI, 0.9393–0.9907). Conclusion DECT-based radiomics effectively diagnosed CLNM in patients with NPC and may potentially be a valuable tool for clinical decision-making. Implications for practice This study improved pre-operative evaluation, treatment strategy selection, and prognostic evaluation for patients with nasopharyngeal carcinoma by combining DECT and radiomics to predict cervical lymph node status prior to treatment.

关键词： Dual-energy computed tomography (DECT) Nasopharyngeal carcinoma (NPC) Cervical lymph node metastases (CLNM) Radiomics Machine learning model

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Low-lying electric and magnetic dipole strengths in Pb207

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Physical Review C 2021年第2期103卷 024309-024309页

作者： T. Shizuma F. Minato M. Omer T. Hayakawa H. Ohgaki S. Miyamoto National Institutes for Quantum and Radiological Science and Technology Tokai Ibaraki 319-1106 Japan Nuclear Data Center Japan Atomic Energy Agency Tokai Ibaraki 319-1195 Japan Integrated Support Center for Nuclear Nonproliferation and Nuclear Security Japan Atomic Energy Agency Tokai Ibaraki 319-1195 Japan Institute of Laser Engineering Osaka University Suita Osaka 565-0871 Japan Institute of Advanced Energy Kyoto University Uji Kyoto 611-0011 Japan Laboratory of Advanced Science and Technology for Industry University of Hyogo Kamigori Hyogo 678-1205 Japan

Low-lying dipole transitions in Pb207 were measured via nuclear photon scattering using a quasimonochromatic, linearly polarized photon beam. The spins and/or parities of the states observed in Pb207 were determined from the intensity asymmetry of resonantly scattered γ rays with respect to the polarization plane of the incident photon beam. The electric (E1) and magnetic (M1) dipole strengths were obtained for excitation energies from 5.49 to 6.75 MeV. The present experimental results, combined with (γ,n) data from the literature, were used to investigate the E1 and M1 photoabsorption cross sections near the neutron separation energy by comparison with predictions from the particle-vibration coupling with the quasiparticle random-phase approximation model.

关键词： Collective levels Electromagnetic transitions Photonuclear reactions Polarization phenomena Resonance reactions 190 ≤ A ≤ 219

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Lithium and Beryllium Isotopes in the PAMELA Experiment

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Bulletin of the Russian Academy of sciences: Physics 2023年第7期87卷 863-866页

作者： Bogomolov, E.A. Vasilyev, G.I. Menn, W. Adriani, O. Bazilevskaya, G.A. Barbarino, G.C. Bellotti, R. Boezio, M. Bonvicini, V. Bongi, M. Bottai, S. Bruno, A. Vacchi, A. Vannuccini, E. Voronov, S.A. Galper, A.M. De Santis, C. Di Felice, V. Zampa, G. Zampa, N. Casolino, M. Campana, D. Carlson, P. Castellini, G. Cafagna, F. Kvashnin, A.A. Kvashnin, A.N. Koldobskiy, S.A. Lagoida, I.A. Leonov, A.A. Mayorov, A.G. Malakhov, V.V. Martucci, M. Marcelli, L. Merge, M. Mikhailov, V.V. Mocchiutti, E. Monaco, A. Mori, N. Munini, R. Osteria, G. Panico, B. Papini, P. Picozza, P. Ricci, M. Ricciarini, S.B. Simon, M. Sparvoli, R. Spillantini, P. Stozhkov, Y.I. Yurkin, Y.T. Ioffe Institute Russian Academy of Sciences St. Petersburg194021 Russia University of Siegen Siegen57068 Germany Department of Physics University of Florence Florence50019 Italy Branch of Florence National Institute for Nuclear Physics Florence50019 Italy Lebedev Physical Institute Russian Academy of Sciences Moscow119991 Russia Department of Physics University of Naples "Federico II" Naples80126 Italy Branch of Naples National Institute for Nuclear Physics Naples80126 Italy Department of Physics University of Bari Bari70126 Italy Branch of Bari National Institute for Nuclear Physics Bari70126 Italy Moscow115409 Russia Branch of Trieste National Institute for Nuclear Physics Trieste34149 Italy Department of Mathematics and Informatics University of Udine Udine33100 Italy "Tor Vergata" Branch of Rome National Institute for Nuclear Physics Rome00133 Italy Department of Physics University of Rome Tor Vergata Rome00133 Italy Science Data Center Italian Space Agency Rome00133 Italy Department of Physics and the Oskar Klein Centre for Cosmoparticle Physics AlbaNova University Centre KTH Royal Institute of Technology Stockholm10691 Sweden Institute for Applied Physics Nello Carrara Florence50019 Italy Frascati National Laboratory National Institute for Nuclear Physics Frascati00044 Italy Department of Physics University of Trieste Trieste34147 Italy

Abstract: The isotopic composition of Li and Be nuclei in the 1–5 GV range of rigidities (nuclear energies of 0.1–1.5 GeV/nucleon) is analyzed using PAMELA flight data from 2006–2014 on the rigidity of detected nuclei and their velocities (time-of-flight analysis and ionization losses in the detector’s multilayer calorimeter). The new PAMELA data expand the range of energies in earlier measurements, are consistent with scarce results, and indicate correlated deviations of Li and Be isotope ratios from the GALPROP data for GCRs, which can be interpreted as evidence of contributions from several nearby local sources against the GCR background. Analysis of precision AMS-02 data on the spectra of positrons, antiprotons, and secondary nuclei of Li, Be, and B also indicates correlated increases in intensity at rigidities of ~50–1000 GV, which could also be due to local sources. The contribution from local sources against the GCR background is estimated at levels of tens of percents for rigidities of 1–5 GV and several percent at rigidities of 50–1000 GV. © 2023, Allerton Press, Inc.

关键词： Rigidity

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Measurement of the U236(n,f) cross section for neutron energies from 0.4 MeV to 40 MeV from the back-streaming white neutron beam at the China Spallation Neutron Source

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Physical Review C 2020年第3期102卷 034604-034604页

作者： Zhizhou Ren Yiwei Yang Jie Wen Hairui Guo Zhongwei Wen Rong Liu Zijie Han Weili Sun Xingyan Liu Qiping Chen Tao Ye Qi An Huaiyong Bai Jie Bao Ping Cao Yonghao Chen Pinjing Cheng Zengqi Cui Ruirui Fan Changqing Feng Minhao Gu Fengqin Guo Changcai Han Guozhu He Yongcheng He Yuefeng He Hanxiong Huang Weiling Huang Xiru Huang Xiaolu Ji Xuyang Ji Haoyu Jiang Wei Jiang Hantao Jing Ling Kang Mingtao Kang Bo Li Lun Li Qiang Li Xiao Li Yang Li(a) Yang Li(b) Shubin Liu Guangyuan Luan Yinglin Ma Changjun Ning Binbin Qi Jie Ren Xichao Ruan Zhaohui Song Hong Sun Xiaoyang Sun Zhijia Sun Zhixin Tan Hongqing Tang Jingyu Tang Pengcheng Wang Qi Wang Taofeng Wang Yanfeng Wang Zhaohui Wang Zheng Wang Qingbiao Wu Xiaoguang Wu Xuan Wu Likun Xie Han Yi Li Yu Tao Yu Yongji Yu Guohui Zhang Jing Zhang Linhao Zhang Liying Zhang Qingmin Zhang Qiwei Zhang Xianpeng Zhang Yuliang Zhang Zhiyong Zhang Yingtan Zhao Liang Zhou Zuying Zhou Danyang Zhu Kejun Zhu Peng Zhu Institute of Nuclear Physics and Chemistry China Academy of Engineering Physics Mianyang 621900 China Institute of Applied Physics and Computational Mathematics Beijing 100088 China State Key Laboratory of Particle Detection and Electronics China Department of Modern Physics University of Science and Technology of China Hefei 230026 China State Key Laboratory of Nuclear Physics and Technology School of Physics Peking University Beijing 100871 China Key Laboratory of Nuclear Data China Institute of Atomic Energy Beijing 102413 China Institute of High Energy Physics Chinese Academy of Sciences (CAS) Beijing 100049 China Spallation Neutron Source Science Center Dongguan 523803 China University of South China Hengyang 421001 China Northwest Institute of Nuclear Technology Xi'an 710024 China Department of Engineering and Applied Physics University of Science and Technology of China Hefei 230026 China School of Physics Beihang University Beijing 100083 China Xi'an Jiaotong University Xi'an 710049 China

A new measurement of the neutron-induced fission cross section of U236 relative to the standard U235(n,f) cross section from 0.4–40 MeV was carried out by the time-of-flight method and a multicell fast fission ionization chamber at the China Spallation Neutron Source-Back-n white neutron source. The measured resonance peaks and the distribution of fission event-energy spectrum from the U235(n,f) reaction are in good agreement with that of the ENDF/B-VIII.0 evaluation, which confirms the reliability of the experimental setup. The measured U236/235U fission cross section ratios in 0.4–40 MeV neutron energy region are compared to previous measurements. The U236 fission cross section with the relative experimental uncertainty of 11.2%–2.9% in 0.4–1 MeV and 2.9%–2.8% in 1–40 MeV is determined and compared to calculation, previous measurements, and main evaluations. The present theoretical result with calculation program UNF reproduces the experimental data and the LANSCE data better than ENDF/B-VIII.0 evaluation does in the secondary fission region. The result confirms current evaluations from 0.4–40 MeV in most energy points and provides the experimental data for evaluating the discrepancies in the relevant energy region.

关键词： Fission Neutron physics A ≥ 220 Spectrometers & spectroscopic techniques

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Measurement of the Eu( ) cross section up to 500 keV at the CSNS Back-n facility, and the stellar Eu( ) cross section at s-process temperatures

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The European Physical Journal A 2022年第12期58卷 1-16页

作者： Li, Xiankai An, Zhendong Jiang, Wei Yang, Gaole Qiu, Weiwei Liao, Zhengfa Zhuang, Ziyue Zhang, Xiaoping Chen, Shengli Guo, Chenchen Xiao, Erxi Fang, Xiao Li, Xinxiang Wang, Hongwei Hu, Xinrong Jiang, Bing Shen, Wenqing Wang, Jincheng Ren, Jie Ruan, Xichao Wang, Dexin Zhang, Su-Yalatu Luo, Wen Zhu, Zhichao Lan, Haoyang Cao, Zongwei Ma, Xu Liu, Yingdu Wang, Pusen Yang, Yi Su, Ping Deng, Xiangai He, Wanbing Ma, Yugang Ma, Chunwang Wang, Yuting Dai, Zhitao Li, Ertao He, Pengqin Tang, RenGuang Zhou, Tao Wang, Jing Yi, Han Zhang, Yue Chen, Yonghao Fan, Ruirui Gao, Keqing Li, Qiang Sun, Kang Tan, Zhixin Gu, Minhao Jing, Hantao Tang, Jingyu School of Nuclear Science and Technology University of South China Hengyang China School of Physics and Astronomy Sun Yat-sen University Zhuhai China Shanghai Institute of Applied Physics Chinese Academy of Sciences Shanghai China State Key Laboratory of Lunar and Planetary Sciences Macau University of Science and Technology Macau China Institute of High Energy Physics Chinese Academy of Sciences Beijing China Spallation Neutron Source Science Center Dongguan China CNSA Macau Center for Space Exploration and Science Macau China Sino-French Institute of Nuclear Engineering and Technology Sun Yat-sen University Zhuhai China University of Chinese Academy of Sciences Beijing China Shanghai Advanced Research Institute Chinese Academy of Sciences Shanghai China Key Laboratory of Nuclear Data China Institute of Atomic Energy Beijing China College of Mathematics and Physics Inner Mongolia Minzu University Tongliao China Institute of Nuclear Physics Inner Mongolia Minzu University Tongliao China State Key Laboratory of Nuclear Physics and Technology and CAPT Peking University Beijing China Beijing Laser Acceleration Innovation Center Huairou Beijing China Shool of Materials Science and Engineering Xiangtan University Xiangtan China Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) Institute of Modern PhysicsDepartment of Nuclear Science and Technology Fudan University Shanghai China Institute of Particle and Nuclear Physics Henan Normal University Xinxiang China School of Physics Henan Normal University Xinxiang China Shenzhen Center Cancer hospital Chinese Academy of Medical Sciences Shenzhen China Institute for Advanced Study in Nuclear Energy and Safety College of Physics and Optoelectronic Engineering Shenzhen University Shenzhen China

In nuclear astrophysics, the nuclides $$^{151}$$ Eu and $$^{153}$$ Eu are both in the path of the s-process, and their (n, $$\gamma $$ ) cross sections are important input parameters for the calculation of the nuclear astrophysics network. According to the EXFOR database, the neutron capture cross section of natural europium in the resonance region has not been fully measured. The (n, $$\gamma $$ ) cross section of $$^{nat}$$ Eu was measured using the time-of-flight (TOF) technique at the Back-n white neutron source facility of the China Spallation Neutron Source (CSNS) in the 1 eV–to 500 keV range. Four C $$_{6}$$ D $$_{6}$$ liquid scintillator detectors and pulse height weighting techniques were used to measure prompt $$\gamma $$ rays and analyze the data. The results of the analysis were compared with the evaluated data of ENDF/B-VIII.0 and JENDL-5.0. It shows that there are some differences between the measurement results and different evaluated data libraries. The resonance parameters of $$^{151}$$ Eu and $$^{153}$$ Eu were extracted in the 1 eV–150 eV region using the R-Matrix code SAMMY. The accurate Maxwellian-averaged capture cross section (MACS) is derived over the temperature range of the s-process nucleosynthesis model. The result shows that at kT=30 keV, the MACS value of $$^{151}$$ Eu is 3417 ± 297 mb and the value of $$^{153}$$ Eu is 2718 ± 237 mb.

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Quantum Fluctuations Drive Angular Momenta in nuclear Fission

arXiv

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arXiv 2023年

作者： Zhou, M.H. Chen, S.Y. Li, Z.Y. Smith, M.S. Li, Z.P. School of Physical Science and Technology Southwest University Chongqing400715 China China Nuclear Data Center China Institute of Atomic Energy Beijing102413 China Physics Division Oak Ridge National Laboratory Oak RidgeTN37831-6354 United States

Quantum fluctuations are ubiquitous and play crucial roles across various scales and systems, such as the Big Bang, black hole dynamics, quantum phase transitions in microscopic many-body systems, and so on. nuclear fission manifests as a complex nuclear shape stretching until it splits into fragments with substantial angular momenta, also exhibiting complex quantum fluctuations and specifically shape fluctuations. For over 40 years, researchers have puzzled how the fission fragment angular momenta are generated dynamically from (almost) zero spin, as well as the particular role played by quantum fluctuations. Here, for the first time, we report the quantum shape fluctuations that drive fragment angular momenta during nuclear fission, based on a global, microscopic, and dynamical simulation. The calculated probability distributions of fragment angular momenta are in good agreement with the experimental measurements, and the sawtooth-like mass dependence of average angular momenta is reproduced very well. It is noteworthy to find that the shape fluctuations—multiple rotations, vibrations, and their couplings—drive the generation and chaotic evolution of fragment angular momenta during fission fragment formation and induce strong correlations between angular momentum orientations of partner fragments at small, medium, and large opening angles (φLH ≈ 30◦, 90◦, 160◦). Our work not only deepens the fundamental understanding of the nuclear fission mechanism but also has implications for the γ-ray heating problem in nuclear reactors and the synthesis of superheavy elements. Copyright © 2023, The Authors. All rights reserved.

关键词： Gamma rays

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Current nuclear data needs for applications

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Physical Review Research 2022年第2期4卷 021001-021001页

作者： Karolina Kolos Vladimir Sobes Ramona Vogt Catherine E. Romano Michael S. Smith Lee A. Bernstein David A. Brown Mary T. Burkey Yaron Danon Mohamed A. Elsawi Bethany L. Goldblum Lawrence H. Heilbronn Susan L. Hogle Jesson Hutchinson Ben Loer Elizabeth A. McCutchan Matthew R. Mumpower Ellen M. O'Brien Catherine Percher Patrick N. Peplowski Jennifer J. Ressler Nicolas Schunck Nicholas W. Thompson Andrew S. Voyles William Wieselquist Michael Zerkle Nuclear and Chemical Sciences Division Lawrence Livermore National Laboratory Livermore California 94550 USA Department of Nuclear Engineering University of Tennessee Knoxville Tennessee 37996 USA Department of Physics and Astronomy University of California Davis California 95516 USA IB3 Global Solutions Oak Ridge Tennessee 37830 USA Physics Division Oak Ridge National Laboratory Oak Ridge Tennessee 37831 USA University of California Department of Nuclear Engineering Berkeley California 94720 USA Nuclear Science Division Lawrence Berkeley National Laboratory Berkeley California 94720 USA National Nuclear Data Center Brookhaven National Laboratory Upton New York 11973 USA Design Physics Division Lawrence Livermore National Laboratory Livermore California 94550 USA Rensselaer Polytechnic Institute Department of Mechanical Aerospace and Nuclear Engineering 110 8th Street Troy New York 12180 USA Signature Science and Technology Division Pacific Northwest National Laboratory Richland Washington 99352 USA Xe-Mobile Division X-Energy LLC Rockville Maryland 20852 USA Radioisotope Science and Technology Division Oak Ridge National Laboratory Oak Ridge Tennessee 37831 USA NEN-2 Advanced Nuclear Technology Los Alamos National Laboratory Los Alamos New Mexico 87545 USA Theoretical Division Los Alamos National Laboratory Los Alamos New Mexico 87545 USA Chemistry Division Los Alamos National Laboratory Los Alamos New Mexico 87545 USA Nuclear Criticality Safety Division Lawrence Livermore National Laboratory Livermore California 94550 USA Johns Hopkins University Applied Physics Laboratory Laurel Maryland 20723 USA Nuclear Energy and Fuel Cycle Division Oak Ridge National Laboratory Oak Ridge Tennessee 37831 USA Reactor Technology Department Naval Nuclear Laboratory West Mifflin Pennsylvania 15122 USA

Accurate nuclear data provide an essential foundation for advances in a wide range of fields, including nuclear energy, nuclear safety and security, safeguards, nuclear medicine, and planetary and space exploration. In these and other critical domains, outdated, imprecise, and incomplete nuclear data can hinder progress, limit precision, and compromise safety. Similar nuclear data needs are shared by many applications, thus prioritizing these needs is especially important and urgently needed. Many levels of analysis are required to prepare nuclear measurements for employment in end-user applications. Because research expertise is typically limited to one level, collaboration across organizations and international borders is essential. This perspective piece provides the latest advances in nuclear data for applications and describes an outlook for both near- and long-term progress in the field.

关键词： nuclear engineering nuclear reactors Quantum computation Monte Carlo methods nuclear data analysis & compilation

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