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Parameter Processes of a Strong Laser in Partially Stripped Plasmas

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Chinese Physics Letters 2000年第12期17卷 893-895页

作者： hu xi-wei Department of Modern Physics University of Science and Technology of ChinaHefei 230026

The effects of the nonlinear polarization in a partially stripped plasma on the parameter processes of a strong laser are discussed. The nonlinear mode coupling equations of stimulated Raman scattering (SRS) are derived. The linear instability growth rates of SRS and stimulated Brillouin scattering (SBS) are given. When the pump wave intensity I0 > 1017 W/cm2, the third order susceptibility associated with bound electrons will reduce the SRS and SBS linear growth rate enormous1y. In addition, the nonlinear susceptibility can affect the nonlinear evolution of SRS and SBS significantly.

关键词： nonlinear susceptibility Parameter

Nonlinear Evolutions of Stimulated Raman and Brillouin Scattering Processes in Partially Stripped-Ion Plasmas

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Chinese Physics Letters 2001年第9期18卷 1230-1233页

作者： hu Ye-Min hu xi-wei Departmentof Electrical Engineering Huazhong University of Science and TechnologyWuhan 430074 Department of Modern Physics University of Science and Technology of ChinaHefei 230026

Numerical analyses for the nonlinear evolutions of stimulated Raman scattering (SRS) and stimulated Brillouin scattering (SBS) processes are given. Various effects of the second- and third-order nonlinear susceptibilities on the SRS and SBS processes are studied. The nonlinear evolutions of SRS and SBS processes are atfected more efficiently than their linear growth rates by the nonlinear susceptibility.

关键词： Brillouin nonlinear Nonlinear

Nonlinear Description of Stimulated Raman Scattering and the Corresponding Four-Wave Process

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Chinese Physics Letters 1997年第9期14卷 678-681页

作者： WANG Shan-cai hu xi-wei Department of Modern Physics University of Science and Technology of ChinaHefei 230026

Nonlinear behaviors of the stimulated Raman scattering and the corresponding four-wave process(ω0→ω_(s)+ω_(pl)+ω_(p2))are *** analytic and numerical solutions of the coupling equations which count the decay of th... 详细信息

关键词： Nonlinear wave decay

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Chinese Physics Letters 2011年第5期28卷 184-186页

作者： HE Yong hu xi-wei JIANG Zhong-He Institute of Fluid Physics China Academy of Engineering PhysicsMianyang 621900 College of Electrical and Electronic Engineering Huazhong University of Science and TechnologyWuhan 430074

Instability of a planar shock front perturbed by a corrugated interface is analyzed,where the perturbation wavelength is along the shock front *** presented analysis involves the effects of the features on the shock front,which is different from a general method presented by D'yakov and Kontorovich,where the shock front is taken as an infinitely *** growth rate of the instability of the perturbed shock front is obtained and compared with the growth rate of the Rayleigh-Taylor instability(RTI)of an interface,on which the density gradient and the initial conditions are similar to the perturbed shock *** analysis and comparisons of the growth rate of the instability indicate that the features of the shock front should be considered seriously in the shock interface interactions.

关键词： shock perturbed interface

Locking of Tearing Modes by the Error Field

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Chinese Physics Letters 2011年第9期28卷 190-193页

作者： XU Tao hu Qi-Ming hu xi-wei YU Qing-Quan J-TEXT Tokamak Laboratory State Key Laboratory of Advanced Electromagnetic Engineering and TechnologyCollege of Electric and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074 Max-Planck-Institute Für Plasmaphysik EURATOM Association85748 GarchingGermany

The locking of tearing modes by the error field is studied by nonlinear numerical *** threshold of mode locking for J-TEXT tokamak plasmas is found.

关键词： tokamak locking mode

Microwave Absorption in Electron Cyclotron Resonance Plasma

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Chinese Physics Letters 2000年第1期17卷 31-33页

作者： LIU Ming-Hai hu xi-wei WU Qin-Chong YU Guo-Yang Institute of Plasma Physics Chinese Academy of SciencesHefei 230031 Department of Modern Physics University of Science and Technology of ChinaHefei 230026

The microwave power absorption in electron cyclotron resonance plasma reactor was investigated with a two-dimensional *** results indicated that there are two typical power deposition profiles over the entire parameter region:(1)microwave power deposition peaks on the axis and decreases in radial direction,(2)microwave power deposition has its maximum at some radial position,i.e.,a hollow *** spatial distribution of electron temperature resembles always to the microwave power absorption *** dependence of plasma parameter on the gas pressure is discussed also.

关键词： microwave absorption Electron

Electromagnetic Wave Attenuation in Atmospheric Pressure Plasmas

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Chinese Physics Letters 2001年第9期18卷 1225-1226页

作者： LIU Ming-Hai hu xi-wei JIANG Zhong-He LU xin-Pei GU Cheng-Lin PAN Yuan College of Electric and Electronic Engineering Huazhong University of Science and TechnologyWuhian 430074

The properties of electromagnetic waves in atmospheric pressure plasmas are investigated with the Lorentz model. The effects of the electromagnetic wave frequency, plasma density, and the electron-neutral collision frequency on the attenuation of electromagnetic waves are discussed. The numerical results indicate that the wave attenuation is stronger at the region of the longer wavelength and at the higher plasma density.

关键词： density. wave neutral

Preliminary Analysis of Hysteresis Phenomenon in Electron Cyclotron Resonance Plasma

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Chinese Physics Letters 2001年第4期18卷 559-561页

作者： LIU Ming-Hai hu xi-wei YU Guo-Yang WU Qin-Chong PAN Yuan Department of Electrical Power Engineering Huazhong University of Science and TechnologyWuhan 430074 Institute of Plasma Physics Chinese Academy of SciencesHefei 230031

The hysteresis phenomenon in electron cyclotron resonance plasma has been investigated theoretically by solving the equations of the density and energy balance of electron and by taking the effects of several collisions such as ionization and recombination into *** results show that multiple-steady states in experimental measurements can be characterized by considering a fact that the energy balance function has three different real roots in certain region of *** root represents a saddle point and other roots represent stable points,that is,the system is *** effects of ionization and the energy transformation due to the collisions between the electron and neutral gas are discussed also.

关键词： roots Electron energy

Observation of Hot Electrons in Surface-Wave Plasmas Excited by Surface Plasmon Polaritons

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Chinese Physics Letters 2011年第11期28卷 162-165页

作者： hu Ye-Lin CHEN Zhao-Quan LIU Ming-Hai HONG Ling-Li LI Ping ZHENG xiao-Liang xiA Guang-Qing hu xi-wei College of Electrical and Information Engineering Anhui University of Science and TechnologyHuainan 232001 State Key Laboratory of Advanced Electromagnetic Engineering and Technology Huazhong University of Science and TechnologyWuhan 430074 State Key Laboratory of Structure Analysis for Industrical Equipment Dalian University of TechnologyDalian 116024

The electron energy distribution functions(EEDFs)are studied in the planar-type surface-wave plasma(SWP)caused by resonant excitation of surface plasmon polaritons(SPPs)using a single cylindrical *** plasma characteristics can be considered as a bi-Maxwellian EEDF,which correspond to a superposition of the bulk low-temperature electron and the high-energy electron beam-like *** beam component energy is pronounced at about 10 eV but the bulk part is lower than 3.5 *** hot electrons included in the proposed plasmas play a significant role in plasma heating and further affect the discharge chemistry.

关键词： beam Electron resonant