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A dumbbell model with five parameters describing nuclear fusion or fission

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Chinese Physics C 2013年第1期37卷 44-50页

作者：孙乾上官丹骅包景东 Department of Physics Beijing Normal University Institute of Applied Physics and Computational Mathematics

We propose a five-parameter dumbbell model to describe the fusion and fission processes of massive nuclei, where the collective variables are： distance ρ between center-of-mass of two fusing nuclei, neck parameter ν, asymmetry D, two deformation variables β1 and β2. The present model has macroscopic qualitative expression of polarization and nuclear collision of head to head, sphere to sphere, waist to waist and so on. The conception of ＂projectile eating target＂ based on open mouth and swallow is proposed to describe nuclear fusion process, and then our understanding of the probability of fusion and quasi-fission is in agreement with some previous work. The calculated fission barriers of a lot of compound nuclei are compared with the experimental data.

关键词： dumbbell model nuclear fusion nuclear fission potential energy surface

Recent progress of tungsten-based high-entropy alloys in nuclear fusion

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Tungsten 2021年第2期3卷 143-160页

作者： Xin Wang He Huang Jie Shi Hai-Yan Xu Da-Qiao Meng Institute of Materials China Academy of Engineering PhysicsMianyang 621908China

The extreme environment in a fusion reactor,namely high thermal load and intense energetic particles,requires the materials to possess high strength and good ductility at high temperature in combination with excellent radiation *** metal tungsten(W)and its alloy cannot satisfy these rigorous requirements,but the discovery of the W-based high-entropy alloys(HEAs)with outstanding properties sheds light on the developments of structural *** properties of some of these alloys make them promising candidates for engineering applications in fusion reactor beyond conventional W and its *** particular,their strengthening-toughening mechanism has also aroused wide ***,the design,microstructure,mechanical properties and irradiation performance of W-based HEAs are reviewed,and their future prospects are outlined.

关键词： tungsten-based high-entropy alloy nuclear fusion Microstructure Mechanical properties Irradiation resistance

A Discussion on the Translation of Popular Science Articles on nuclear fusion from the Perspective of Functional Equivalence

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校园英语 2019年第39期 243-244页

作者： Chen LIN Southwestern Institute of Physics

Eugene Nida’s Functional Equivalence focuses on target readers, stressing fluency and naturalness of translation. This provides a practical guidance to translation strategies and translation criticism. Excellent popular science articles on nuclear fusion, represented by the ones on ITER(International Thermonuclear Experimental Reactor) website, feature vivid and common language. This article will make a brief analysis of the translation of these articles from the perspective of Functional Equivalence.

关键词： Functional Equivalence nuclear fusion popular science articles

A Quick Survey of nuclear fusion and Plasma Control

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A Quick Survey of Nuclear Fusion and Plasma Control

Long radial coherence of electron temperature fluctuations in non-local transport in HL-2A plasmas

第三十届中国控制会议

作者： XU Chao Institute of Cyber-Systems & Control Department of Control Science & Engineering Zhejiang University,Hangzhou 310027,P.R.China

＜正＞Control engineering has been considered as one of the enabling components in producing energy from fusion.A brief survey is given in this paper for control engineers on nuclear fusion basics and various plasma c... 详细信息

关键词： Energy nuclear fusion Plasma Control Diagnostics Inverse Problems Statistical Inference

来源： cnki会议评论

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Chinese Physics B 2024年第2期33卷 413-420页

作者：石中兵方凯锐李景春邹晓岚卢兆旸闻杰王占辉丁玄同陈伟杨曾辰蒋敏季小全佟瑞海李永高施陪万钟武律许敏 Southwestern Institute of Physics Chengdu 610041China Department of Earth and Space Sciences Southern University of Science and TechnologyShenzhen 518055China Shenzhen Key Laboratory of nuclear and Radiation Safety College of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhen 518060China CEA IRFMSaint-Paul-lez-Durance 13108France

The dynamics of long-wavelength(kθ<1.4 cm^(-1)),broadband(20 kHz–200 kHz)electron temperature fluctuations(Te/Te)of plasmas in gas-puff experiments are observed for the first time in HL-2A *** a relatively low density(ne(0)■0.91×10^(19)m^(-3)–1.20×10^(19)m^(-3))scenario,after gas-puffing the core temperature increases and the edge temperature *** the contrary,temperature fluctuation drops at the core and increases at the *** show the non-local emergence is accompanied with a long radial coherent length of turbulent *** in a higher density(ne(0)?1.83×10^(19)m^(-3)–2.02×10^(19)m^(-3))scenario,the phenomena are not ***,compelling evidence indicates that E×B shear serves as a substantial contributor to this extensive radial *** finding offers a direct explanatory link to the intriguing core-heating phenomenon witnessed within the realm of non-local transport.

关键词： nuclear fusion non-local transport tokamak gas-puffing

Approximating the Radial Distribution Function of the Electron in a Hydrogen Atom by a Normal Distribution Suggests That Magnetic Confinement fusion Would Be Less Energy Efficient than Inertial Confinement fusion

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Applied Mathematics 2024年第9期15卷 585-593页

作者： Motohisa Osaka Department of Basic Science Nippon Veterinary and Life Science University Tokyo Japan

Since the position of the electron in a hydrogen atom cannot be determined, the region in which it resides is said to be determined stochastically and forms an electron cloud. The probability density function of the single electron in 1s orbit is expressed as φ2, a function of distance from the nucleus. However, the probability of existence of the electron is expressed as a radial distribution function at an arbitrary distance from the nucleus, so it is estimated as the probability of the entire spherical shape of that radius. In this study, it has been found that the electron existence probability approximates the radial distribution function by assuming that the probability of existence of the electron being in the vicinity of the nucleus follows a normal distribution for arbitrary x-, y-, and z-axis directions. This implies that the probability of existence of the electron, which has been known only from the distance information, would follow a normal distribution independently in the three directions. When the electrons’ motion is extremely restricted in a certain direction by the magnetic field of both tokamak and helical fusion reactors, the probability of existence of the electron increases with proximity to the nucleus, and as a result, it is less likely to be liberated from the nucleus. Therefore, more and more energy is required to free the nucleus from the electron in order to generate plasma.

关键词： Electron Cloud Radial Distribution Function nuclear fusion Tokamak Laser

Shaping the Future of Energy:A Path t oward Zero-Emission and Sustainable Solutions

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Journal of Energy and Power Engineering 2024年第2期18卷 75-78页

作者： Ali Zamani Paydar Bahman Zohuri Physics and Energy Engineering Department Amirkabir University of TechnologyTehranIran Galaxy Advanced Engineering AlbuquerqueNew Mexico 87111USA

In the age of rapidly growing global population and escalating energy demands,the pursuit of sustainable,zero-emission energy sources has become *** article explores the interplay between environmental concerns,such as global warming and the greenhouse effect,and the need for innovative energy *** melting polar ice caps exemplify the urgent need for reducing carbon ***(advanced reactor concepts)in both fission and fusion technologies offer promising paths to zero-emission *** fission reactors,including SMRs(small modular reactors)and Generation IV reactors,provide improved safety,efficiency,and waste *** energy,despite being in the experimental stage,holds potential as a nearly limitless clean energy ***(artificial intelligence)significantly enhances these technologies by optimizing design,operations,maintenance,safety,and grid ***-driven innovations are pivotal in accelerating the development and deployment of ARC technologies,ensuring they are safe,reliable,and *** article underscores the vital role of policy support,global cooperation,and strategic investments in shaping a sustainable energy future that can mitigate the effects of climate change,support economic growth,and protect our planet.

关键词： Zero-emission energy global warming greenhouse effect polar ice caps ARC nuclear fission nuclear fusion AI sustainable energy renewable energy technologies

nuclear Hexadecapole Deformation Effects on the Production of Super-Heavy Elements

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Chinese Physics Letters 2010年第6期27卷 66-69页

作者： WANG Nan DOU Liang ZHAO En-Guang Werner Scheid College of Physics Shenzhen University Shenzhen 518060 Institute of Theoretical Physics Chinese Academy of Sciences Beijing 100190 Center of Theoretical nuclear Physics National Laboratory of Heavy ion Accelerator Lanzhou 730000 Institut fur Theoretisehe Physik Justus-Liebig-Universitat D-35392 Giessen Germany

We investigate the effects of the nuclear hexadecapole deformations on the interaction potentials between nuclei, the driving potentials and the fusion probabilities for some cold fusion reactions leading to super-heavy elements. It is found that nuclear hexadecapole deformations change significantly the structure of the driving potentials and the fusion probabilities for some reaction channels.

关键词： HEAVY elements nuclear physics SCATTERING (Physics) nuclear fusion nuclear structure nuclear reactions PROBABILITY theory

Coulomb expansion of deuterated methane clusters irradiated by an ultrashort intense laser pulse

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Chinese Physics B 2008年第4期17卷 1237-1241页

作者：李洪玉刘建胜王成倪国权李儒新徐至展 State Key Laboratory of High Field Laser Physics Shanghai Institute of Optics and Fine MechanicsChinese Academy of Sciences

The simulations of three-dimensional particle dynamics show that when irradiated by an ultrashort intense laser pulse, the deuterated methane cluster expands and the majority of deuterons overrun the more slowly expanding carbon ions, resulting in the creation of two separated subelusters. The enhanced deuteron kinetic energy and a narrow peak around the energy maximum in the deuteron energy distribution make a considerable contribution to the efficiency of nuclear fusion compared with the ease of homonuelear deuterium clusters. With the intense laser irradiation, the nuclear fusion yield increases with the increase of the cluster size, so that deuterated heteronuelear clusters with larger sizes are required to achieve a greater neutron yield.

关键词： deuterated methane cluster ultrashort intense laser pulse Coulomb explosion nuclear fusion