检索结果-内蒙古大学图书馆

2024 Radiation Protection and Shielding Division, RPSD 2024

作者： Harris, Z. Hill, B. Kim, S. Mattera, A. McCutchan, E.A. Palaguachi, O. Seeley, M. Sonzogni, A.A. University of Arkansas FayettevilleAR72701 United States Rensselaer Polytechnic Institute TroyNY12180 United States University of Illinois at Urbana-Champaign UrbanaIL61801 United States National Nuclear Data Center Brookhaven National Laboratory UptonNY11973-5000 United States Colgate University HamiltonNY13346 United States Stony Brook University Stony BrookNY11794 United States Nuclear Science & Technology Department Brookhaven National Laboratory UptonNY11973-5000 United States

来源：评论

学校读者我要写书评

暂无评论

Security Compressed Sensing Image Encryption Algorithm Based on Elliptic Curve

Security Compressed Sensing Image Encryption Algorithm Based...

引用

作者： Anan Jin Xiang Li Qingzhi Xiong School of Information Engineering East China University of Technology Jiangxi Engineering Technology Research Center of Nuclear Geoscience Data Science and System East China University of Technology Jiangxi Key Laboratory of Cybersecurity Intelligent Perception East China University of Technology

Aiming to address the problems of high costs associated with the storage and transmission of environmental monitoring images, as well as potential security risks, this paper proposes a security compressed sensing image encryption algorithm based on elliptic curve cryptography. The algorithm introduces elliptic curve encryption technology within a compressed sensing framework,using elliptic curve cryptography to encrypt the matrix during the compression perception acquisition process. This enables secure acquisition of environmental monitoring encrypted images. Therefore, this paper presents a security compressed sensing framework to address security gaps in the compression perception reconstruction process and improve the security of environmental monitoring *** results show that the proposed algorithm effectively encrypts and reconstructs environmental monitoring images, with high security and resistance to cracking.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Measurement of ω meson production in pp collisions at = 13 TeV

引用

Journal of High Energy Physics 2025年第4期2025卷 1-30页

作者： Acharya, S. Adamová, D. Agarwal, A. Aglieri Rinella, G. Aglietta, L. Agnello, M. Agrawal, N. Ahammed, Z. Ahmad, S. Ahn, S. U. Ahuja, I. Akindinov, A. Akishina, V. Al-Turany, M. Aleksandrov, D. Alessandro, B. Alfanda, H. M. Alfaro Molina, R. Ali, B. Alici, A. Alizadehvandchali, N. Alkin, A. Alme, J. Alocco, G. Alt, T. Altamura, A. R. Altsybeev, I. Alvarado, J. R. Anaam, M. N. Andrei, C. Andreou, N. Andronic, A. Andronov, E. Anguelov, V. Antinori, F. Antonioli, P. Apadula, N. Aphecetche, L. Appelshäuser, H. Arata, C. Arcelli, S. Aresti, M. Arnaldi, R. Arneiro, J. G. M. C. A. Arsene, I. C. Arslandok, M. Augustinus, A. Averbeck, R. Azmi, M. D. Baba, H. Badalà, A. Bae, J. Baek, Y. W. Bai, X. Bailhache, R. Bailung, Y. Bala, R. Balbino, A. Baldisseri, A. Balis, B. Banerjee, D. Banoo, Z. Barbasova, V. Barile, F. Barioglio, L. Barlou, M. Barman, B. Barnaföldi, G. G. Barnby, L. S. Barreau, E. Barret, V. Barreto, L. Bartels, C. Barth, K. Bartsch, E. Bastid, N. Basu, S. Batigne, G. Battistini, D. Batyunya, B. Bauri, D. Bazo Alba, J. L. Bearden, I. G. Beattie, C. Becht, P. Behera, D. Belikov, I. Bell Hechavarria, A. D. C. Bellini, F. Bellwied, R. Belokurova, S. Beltran, L. G. E. Beltran, Y. A. V. Bencedi, G. Bensaoula, A. Beole, S. Berdnikov, Y. Berdnikova, A. Bergmann, L. Besoiu, M. G. Betev, L. Bhaduri, P. P. Bhasin, A. Bhat, M. A. Bhattacharjee, B. Bianchi, L. Bianchi, N. Bielčík, J. Bielčíková, J. Bigot, A. P. Bilandzic, A. Biro, G. Biswas, S. Bize, N. Blair, J. T. Blau, D. Blidaru, M. B. Bluhme, N. Blume, C. Boca, G. Bock, F. Bodova, T. Bok, J. Boldizsár, L. Bombara, M. Bond, P. M. Bonomi, G. Borel, H. Borissov, A. Borquez Carcamo, A. G. Bossi, H. Botta, E. Bouziani, Y. E. M. Bratrud, L. Braun-Munzinger, P. Bregant, M. Broz, M. Bruno, G. E. Buckland, M. D. Budnikov, D. Buesching, H. Bufalino, S. Buhler, P. Burmasov, N. Buthelezi, Z. Bylinkin, A. Bysiak, S. A. Cabanillas Noris, J. C. Cabrera, M. F. T. Cai, M. Caines, H. Caliva, A. Calvo Villar, E. Camacho, J. M. M. Camerini, P. Canedo, F. D. M. Cantway, S. L. Carabas, M. Université Clermont Auvergne CNRS/IN2P3 LPC Clermont-Ferrand France Nuclear Physics Institute of the Czech Academy of Sciences Husinec-Řež Czech Republic Variable Energy Cyclotron Centre Homi Bhabha National Institute Kolkata India European Organization for Nuclear Research (CERN) Geneva Switzerland Dipartimento di Fisica dell’Università and Sezione INFN Turin Italy Dipartimento DISAT del Politecnico and Sezione INFN Turin Italy Dipartimento di Fisica e Astronomia dell’Università and Sezione INFN Bologna Italy Department of Physics Aligarh Muslim University Aligarh India Korea Institute of Science and Technology Information Daejeon Republic of Korea Faculty of Science P.J. Šafárik University Košice Slovak Republic Frankfurt Institute for Advanced Studies Johann Wolfgang Goethe-Universität Frankfurt Frankfurt Germany Research Division and ExtreMe Matter Institute EMMI GSI Helmholtzzentrum für Schwerionenforschung GmbH Darmstadt Germany INFN Sezione di Torino Turin Italy Central China Normal University Wuhan China Instituto de Física Universidad Nacional Autónoma de México Mexico City Mexico University of Houston Houston United States Sungkyunkwan University Suwon City Republic of Korea Department of Physics and Technology University of Bergen Bergen Norway INFN Sezione di Cagliari Cagliari Italy Institut für Kernphysik Johann Wolfgang Goethe-Universität Frankfurt Frankfurt Germany INFN Sezione di Bari Bari Italy Physik Department Technische Universität München Munich Germany High Energy Physics Group Universidad Autónoma de Puebla Puebla Mexico Horia Hulubei National Institute of Physics and Nuclear Engineering Bucharest Romania University of Derby Derby United Kingdom Universität Münster Institut für Kernphysik Münster Germany Physikalisches Institut Ruprecht-Karls-Universität Heidelberg Heidelberg Germany INFN Sezione di Padova Padova Italy INFN Sezione di Bologna Bologna Italy Lawrence Berkeley National Laboratory Berkeley United Sta

The pT-differential cross section of ω meson production in pp collisions at $$ \sqrt{s} $$ = 13 TeV at midrapidity (|y| < 0.5) was measured with the ALICE detector at the LHC, covering an unprecedented transverse-momentum range of 1.6 < pT < 50 GeV/c. The meson is reconstructed via the ω → π+π−π0 decay channel. The results are compared with various theoretical calculations: PYTHIA8.2 with the Monash 2013 tune overestimates the data by up to 50%, whereas good agreement is observed with Next-to-Leading Order (NLO) calculations incorporating ω fragmentation using a broken SU(3) model. The ω/π0 ratio is presented and compared with theoretical calculations and the available measurements at lower collision energies. The presented data triples the pT ranges of previously available measurements. A constant ratio of Cω/π0 = 0.578 ± 0.006 (stat.) ± 0.013 (syst.) is found above a transverse momentum of 4 GeV/c, which is in agreement with previous findings at lower collision energies within the systematic and statistical uncertainties.

关键词：

来源：评论

学校读者我要写书评

暂无评论

B-doped MCP detector developed for neutron resonance imaging at Back-n white neutron source

引用

nuclear science and Techniques 2024年第8期35卷 1-11页

作者： Li, Qiang Wang, Li-Jiao Tang, Jing-Yu Qiu, Xiang-Biao Chen, Zhen Zhao, Mao-Yuan Ning, Chang-Jun Pan, Kai Xu, Wei Li, Tao Lu, Su-Peng Yi, Han Fan, Rui-Rui Feng, Chang-Qing Zhang, Rong Sun, Xiao-Yang An, Qi Bai, Hao-Fan Bai, Jiang-Bo Bao, Jie Cao, Ping Chen, Qi-Ping Chen, Yong-Hao Cui, Zeng-Qi Fan, An-Chuan Feng, Fan-Zhen Gu, Min-Hao Han, Chang-Cai Han, Zi-Jie He, Guo-Zhu He, Yong-Cheng Hong, Yang Hu, Yi-Wei Huang, Han-Xiong Jiang, Wei Jiang, Zhi-Jie Jin, Zheng-Yao Kang, Ling Li, Bo Li, Gong Li, Xiao Li, Yang Liu, Jie Liu, Rong Liu, Shu-Bin Liu, Yi-Na Luan, Guang-Yuan Ren, Jie Ren, Zhi-Zhou Ruan, Xi-Chao Song, Zhao-Hui Sun, Kang Tan, Zhi-Xin Tang, Sheng-Da Wang, Jin-Cheng Wang, Peng-Cheng Wang, Zhao-Hui Wen, Zhong-Wei Wu, Xiao-Guang Wu, Xuan Xia, Cong Yu, Yong-Ji Zhang, Guo-Hui Zhang, Hang-Chang Zhang, Lin-Hao Zhang, Qi-Wei Zhang, Xian-Peng Zhang, Yu-Liang Zhang, Yue Zhang, Zhi-Yong Zhou, Zhi-Hao Zhu, Ke-Jun Zou, Chong Institute of High Energy Physics Chinese Academy of Sciences (CAS) Beijing China Spallation Neutron Source Science Center Dongguan China State Key Laboratory of Particle Detection and Electronics Institute of High Energy Physics Chinese Academy of Sciences Beijing China Dongguan Songshan Lake Future School Dongguan China School of Nuclear Science and Technology University of Science and Technology of China Hefei China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of China Hefei China North Night Vision Science and Technology (Nanjing) Research Institute Co. Ltd Nanjing China Department of Modern Physics University of Science and Technology of China Hefei China State Key Laboratory of Nuclear Physics and Technology School of Physics Peking University Beijing China Institute of Modern Physics Fudan University Shanghai China Key Laboratory of Nuclear Data China Institute of Atomic Energy Beijing China China Academy of Engineering Physics Institute of Nuclear Physics and Chemistry Mianyang China USTC archaeometry lab University of Science and Technology of China Hefei China Northwest Institute of Nuclear Technology Xi’an China University of Chinese Academy of Sciences Beijing China China Shipbuilding Trading Co. Ltd Beijing China

Neutron resonance imaging (NRI) has recently emerged as an appealing technique for neutron radiography. Its complexity surpasses that of conventional transmission imaging, as it requires a high demand for both a neutron source and detector. Consequently, the progression of NRI technology has been sluggish since its inception in the 1980s, particularly considering the limited studies analyzing the neutron energy range above keV. The white neutron source (Back-n) at the China Spallation Neutron Source (CSNS) provides favorable beam conditions for the development of the NRI technique over a wide neutron energy range from eV to MeV. Neutron-sensitive microchannel plates (MCP) have emerged as a cutting-edge tool in the field of neutron detection owing to their high temporal and spatial resolutions, high detection efficiency, and low noise. In this study, we report the development of a $$^{10}$$ B-doped MCP detector, along with its associated electronics, data processing system, and NRI experiments at the Back-n. Individual heavy elements such as gold, silver, tungsten, and indium can be easily identified in the transmission images by their characteristic resonance peaks in the 1–100 eV energy range; the more difficult medium-weight elements such as iron, copper, and aluminum with resonance peaks in the 1–100 keV energy range can also be identified. In particular, results in the neutron energy range of dozens of keV (Aluminum) are reported here for the first time.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Prospect for measurement of the CP-violating phase φs in the Bs → J/Ψφ channel at a future Z factory

arXiv

引用

arXiv 2022年

作者： Li, Xiaomei Ruan, Manqi Zhao, Mingrui Science and Technology on Nuclear Data Laboratory China Institute of Atomic Energy Beijing China Institute of High Energy Physics Chinese Academy of Sciences Beijing China Niels Bohr Institute University of Copenhagen Copenhagen Denmark

The CP-violating phase φs, the Bs decay width (Γs), and the Bs decay width difference (ΔΓs) are sensitive probes to new physics and can constrain the heavy quark expansion theory. The potential for the measurement at future Z factories is studied in this manuscript. It is found that operating at Tera-Z mode, the expected precision can reach: σ(φs) = 4.6 mrad, σ(ΔΓs) = 2.4 ns-1 and σ(Γs) = 0.72 ns-1. The precision of φs is 40% larger than the expected precision with the LHCb experiment at HL-LHC. If operating at 10-Tera-Z mode, the precision of φs can be measured at 45% of the precision obtained from the LHCb experiment at HL-LHC. However, the measurement of Γs and ΔΓs cannot benefit from the excellent time resolution and tagging power of the future Zfactories. Only operating at 10-Tera-Z mode can the Γs and ΔΓs reach an 18% larger precision than the precision expected to be obtained from LHCb at HL-LHC. The control of penguin contamination at the future Z-factories is also discussed. © 2022, CC BY.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Neutron and γ background measurements of the experimental halls at the CSNS back-streaming white neutron source

引用

nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 2020年 980卷 164506-164506页

作者： Li, Qiang Jing, Hantao Zhou, Bin Ning, Changjun Tang, Jingyu Ren, Jie Yi, Han Zhu, Xing Zhang, Liying Jiang, Wei Fan, Ruirui Bao, Jie Feng, Changqing Ruan, Xichao Chen, Yonghao Zhou, Luping Li[a], Yang Tan, Zhixin Chen, Yukai An, Qi Bai, Huaiyong Cao, Ping Chen, Qiping Cheng, Pinjing Cui, Zengqi Gu, Minhao Guo, Fengqin Han, Changcai Han, Zijie He, Guozhu He, Yongcheng He, Yuefeng Huang, Hanxiong Huang, Weiling Huang, Xiru Ji, Xiaolu Ji, Xuyang Jiang, Haoyu Kang, Ling Kang, Mingtao Li, Bo Li, Lun Li, Xiao Li[b], Yang Liu, Rong Liu, Shubin Liu, Xingyan Luan, Guangyuan Ma, Yinglin Qi, Binbin Song, Zhaohui Sun, Hong Sun, Xiaoyang Sun, Zhijia Tang, Hongqing Wang, Pengcheng Wang, Qi Wang, Taofeng Wang, Yanfeng Wang, Zhaohui Wang, Zheng Wen, Jie Wen, Zhongwei Wu, Qingbiao Wu, Xiaoguang Wu, Xuan Xie, Likun Yang, Yiwei Yu, Li Yu, Tao Yu, Yongji Zhang, Guohui Zhang, Jing Zhang, Linhao Zhang, Qingmin Zhang, Qiwei Zhang, Xianpeng Zhang, Yuliang Zhang, Zhiyong Zhao, Yingtan Zhou, Liang Zhou, Zuying Zhu, Danyang Zhu, Kejun Zhu, Peng Beijing100049 China Spallation Neutron Source Science Center Dongguan523803 China Key Laboratory of Nuclear Data China Institute of Atomic Energy Beijing102413 China Sate Key Laboratory of Particle Detection and Electronics China Department of Modern Physics University of Science and Technology of China Hefei230026 China State Key Laboratory of Nuclear Physics and Technology School of Physics Peking University Beijing100871 China Institute of Nuclear Physics and Chemistry China Academy of Engineering Physics Mianyang621900 China University of South China Hengyang421001 China Northwest Institute of Nuclear Technology Xi'an710024 China Department of Engineering and Applied Physics University of Science and Technology of China Hefei230026 China School of Physics Beihang University Beijing100083 China Xi'an Jiaotong University Xi'an710049 China

Accurate nuclear data measurements require a good background control of the experimental environment. At the back-streaming white neutron source (the so-called Back-n White Neutron Source) at China Spallation Neutron Source that is dedicated for nuclear data measurements, comprehensive shielding measures have been employed around the neutron beam line to reduce the neutron and γ backgrounds in the experimental end-stations. The basic background generated by the neutron beam without samples was simulated by the Monte Carlo method and correspondingly measured with a Bonner sphere spectrometer. The results show that the experimental measurements and simulations are generally in good agreement, and the neutron background level meets the requirements of the nuclear data experiments. Moreover, the γ background that was measured by using liquid BC501A and NaI scintillator detectors is mainly from the natural radioactivity of environment, and the beam induced γ background is very weak, whereas the natural γ background can be removed by a coincidence in time with beam bunch or be deducted by background measurement without samples. While the present measurements prove that the neutron/γ basic background has been well controlled, the experimentalists can devote the effort to solve the background problem caused by the samples. © 2020 Elsevier B.V.

关键词： Neutron sources

来源：评论

学校读者我要写书评

暂无评论

Back-n white neutron source at CSNS and its applications

arXiv

引用

arXiv 2021年

作者： Tang, Jing-Yu An, Qi Bai, Jiang-Bo Bao, Jie Bao, Yu Cao, Ping Chen, Hao-Lei Chen, Qi-Ping Chen, Yong-Hao Chen, Zhen Cui, Zeng-Qi Fan, Rui-Rui Feng, Chang-Qing Gao, Ke-Qing Gao, Xiao-Long Gu, Min-Hao Han, Chang-Cai Han, Zi-Jie He, Guo-Zhu He, Yong-Cheng Hong, Yang Hu, Yi-Wei Huang, Han-Xiong Huang, Xi-Ru Jiang, Hao-Yu Jiang, Wei Jiang, Zhi-Jie Jing, Han-Tao Kang, Ling Li, Bo Li, Chao Li, Jia-Wen Li, Qiang Li, Xiao Li, Yang Liu, Jie Liu, Rong Liu, Shu-Bin Liu, Xing-Yan Long, Ze Luan, Guang-Yuan Ning, Chang-Jun Niu, Meng-Chen Qi, Bin-Bin Ren, Jie Ren, Zhi-Zhou Ruan, Xi-Chao Song, Zhao-Hui Sun, Kang Sun, Zhi-Jia Tan, Zhi-Xin Tang, Xin-Yi Tian, Bin-Bin Wang, Li-Jiao Wang, Peng-Cheng Wang, Zhao-Hui Wen, Zhong-Wei Wu, Xiao-Guang Wu, Xuan Xie, Li-Kun Yang, Xiao-Yun Yang, Yi-Wei Yi, Han Yu, Li Yu, Tao Yu, Yong-Ji Zhang, Guo-Hui Zhang, Lin-Hao Zhang, Qi-Wei Zhang, Xian-Peng Zhang, Yu-Liang Zhang, Zhi-Yong Zhou, Lu-Ping Zhou, Zhi-Hao Zhu, Ke-Jun State Key Laboratory of Particle Detection and Electronics Department of Modern Physics University of Science and Technology of China Hefei230026 China Institute of Nuclear Physics and Chemistry China Academy of Engineering Physics Mianyang621900 China Key Laboratory of Nuclear Data China Institute of Atomic Energy Beijing102413 China Beijing100049 China Spallation Neutron Source Science Center Dongguan523803 China State Key Laboratory of Nuclear Physics and Technology School of Physics Peking University Beijing100871 China Northwest Institute of Nuclear Technology Xi’an710024 China University of Chinese Academy of Sciences Beijing100049 China Department of Engineering and Applied Physics University of Science and Technology of China Hefei230026 China

Back-streaming neutrons from the spallation target of the China Spallation Neutron Source (CSNS) that emit through the incoming proton channel were exploited to build a white neutron beam facility (the so-called Back-n white neutron source), which was completed in March 2018. The Back-n neutron beam is very intense, at approximately 2×107 n/cm2/s at 55 m from the target, and has a nominal proton beam with a power of 100 kW in the CSNS-I phase and a kinetic energy of 1.6 GeV and a thick tungsten target in multiple slices with modest moderation from the cooling water through the slices. In addition, the excellent energy spectrum spanning from 0.5 eV to 200 MeV, and a good time resolution related to the time-of-flight measurements make it a typical white neutron source for nuclear data measurements;its overall performance is among that of the best white neutron sources in the world. Equipped with advanced spectrometers, detectors, and application utilities, the Back-n facility can serve wide applications, with a focus on neutron-induced cross-section measurements. This article presents an overview of the neutron beam characteristics, the experimental setups, and the ongoing applications at Back-n. © 2021, CC BY-SA.

关键词： Neutron sources

来源：评论

学校读者我要写书评

暂无评论

Analysis of 7Li(n,n′)7Li* reactions using the continuum-discretized coupled-channels method

引用

Physical Review C 2012年第6期86卷 064604-064604页

作者： D. Ichinkhorloo Y. Hirabayashi K. Katō M. Aikawa T. Matsumoto S. Chiba Meme Media Laboratory Hokkaido University Sapporo 060-8628 Japan Information Initiative Center Hokkaido University Sapporo 060-0810 Japan Nuclear Reaction Data Centre Faculty of Science Hokkaido University Sapporo 060-0810 Japan Department of Physics Kyushu University Fukuoka 812-8581 Japan Research Laboratory for Nuclear Reactors Tokyo Institute of Technology Tokyo 152-8550 Japan

We study 7Li(n,n′)7Li* reactions by using the continuum-discretized coupled-channels (CDCC) method with the complex Jeukenne-Lejeune-Mahaux effective nucleon-nucleon interaction. In this study, the 7Li nucleus is described by an α+t cluster model. The calculated elastic cross sections for incident energies between 11.5 and 24.0 MeV show good agreements with experimental data. Furthermore, we calculate the neutron spectra of 7Li ground and excited breakup states measured at selected angular points for incident energies of 11.5 and 18.0 MeV. The results reproduce the observed data systematically.

关键词： nuclear reactions FIELD theory (Physics) CROSS sections (nuclear physics) LITHIUM nuclear energy GROUND state (Quantum mechanics)

来源：评论

学校读者我要写书评

暂无评论

Performance study of trial M-THGEM

引用

Radiation Detection technology and Methods 2020年第1期4卷 78-82页

作者： Shao-Qing Deng Wen-Qi Yan Dao-Jin Hong Bo-Xiang Yu Gao-Long Zhang Yu-Guang Xie School of Physics and Nuclear Energy Engineering Beihang UniversityBeijing 100191China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China University of Science and Technology of China Hefei 230026China State Key Laboratory of Particle Detection and Electronics Beijing 100049China University of Chinese Academy of Sciences Beijing 100049China Beijing Advanced Innovation Center for Big Data-Based Precision Medicine Beihang UniversityBeijing 100083China

Background M-THGEM is a new type of electron multiplier,which is developed with a high gain,good stability and uniformity based on *** the successful application of small area M-THGEM,the large-area M-THGEM is proposed based on large-volume gas *** The production of large-area M-THGEM is difficult compared with the small one with more holes and more stable *** meet the requirements of large-area gas detectors,the performances of the large-area M-THGEM need to be measured and researched,which will provide a guidance on the process and design of the *** The M-THGEM membrane was loaded into a chamber to complete the test under the conditions of 55Fe/X-ray source(5.9 keV)and working gas Ar∶iC4H10=97∶*** performance of gain,energy resolution,uniformity and long-term stability can be *** Based on the small area M-THGEM,the research and design of large-area M-THGEM with 200×200 mm^(2)were *** basic performances were *** results show that the gain with the working gas of Ar∶iC_(4)H_(10)=97∶3 can reach to 6×10^(3),and the energy resolution of the^(55)Fe/X-ray source(5.9 keV)reaches 29.4%with a good gain uniformity and *** At present,the production and measurement of the large-area M-THGEM has been *** M-THGEM of 200×200 mm^(2)shows a good performance,which will provide many references for the future design.

关键词： M-THGEM Gain Energy resolution Stability

来源：评论

学校读者我要写书评

暂无评论

Manipulation of Giant Multipole Resonances via Vortex γ Photons

引用

Physical Review Letters 2023年第20期131卷 202502-202502页

作者： Zhi-Wei Lu Liang Guo Zheng-Zheng Li Mamutjan Ababekri Fang-Qi Chen Changbo Fu Chong Lv Ruirui Xu Xiangjin Kong Yi-Fei Niu Jian-Xing Li Ministry of Education Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter Shaanxi Province Key Laboratory of Quantum Information and Quantum Optoelectronic Devices School of Physics Xi’an Jiaotong University Xi’an 710049 China School of Nuclear Science and Technology Lanzhou University Lanzhou 730000 China Frontiers Science Center for Rare Isotopes Lanzhou University Lanzhou 730000 China Key Laboratory of Nuclear Physics and Ion-beam Application (MoE) Institute of Modern Physics Fudan University Shanghai 200433 China Department of Nuclear Physics China Institute of Atomic Energy P.O. Box 275(7) Beijing 102413 China China Nuclear Data Center China Institute of Atomic Energy P.O. Box 275(41) Beijing 102413 China

Traditional photonuclear reactions primarily excite giant dipole resonances, making the measurement of isovector giant resonances with higher multipolarities a great challenge. In this Letter, the manipulation of collective excitations of different multipole transitions in even-even nuclei via vortex γ photons is investigated. We develop the calculation method for photonuclear cross sections induced by the vortex γ photon beam using the fully self-consistent random-phase approximation plus particle-vibration coupling (RPA+PVC) model based on Skyrme density functional. We find that the electromagnetic transitions with multipolarity J<|mγ| are forbidden for vortex γ photons due to the angular momentum conservation, with mγ being the projection of total angular momentum of γ photon on its propagation direction. For instance, this allows for probing the isovector giant quadrupole resonance without interference from dipole transitions using vortex γ photons with mγ=2. Furthermore, the electromagnetic transition with J=|mγ|+1 vanishes at a specific polar angle. Therefore, the giant resonances with specific multipolarity can be extracted via vortex γ photons. Moreover, the vortex properties of γ photons can be meticulously diagnosed by measuring the nuclear photon-absorption cross section. Our method opens new avenues for photonuclear excitations, generation of coherent γ photon laser and precise detection of vortex particles, and consequently, has significant impact on nuclear physics, nuclear astrophysics and strong laser physics.

关键词： Electromagnetic transitions Equations of state of nuclear matter Gamma-ray strength functions Giant resonances Models & methods for nuclear reactions nuclear reactions nuclear transition rates Photonuclear reactions Polarization phenomena Resonance reactions

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：