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Particle simulations of mode conversion between slow mode and fast mode in lower hybrid range of frequencies

文献类型：期刊论文

作者Jia, Guozhang1,2; Xiang, Nong1,2; Wang, Xueyi1,3; Huang, Yueheng1,2; Lin, Yu3
刊名PHYSICS OF PLASMAS
出版日期2016
卷号23期号:1页码:012504
DOI10.1063/1.4939604
文献子类Article
英文摘要The propagation and mode conversion of lower hybrid waves in an inhomogeneous plasma are investigated by using the nonlinear delta f algorithm in a two-dimensional particle-in-cell simulation code based on the gyrokinetic electron and fully kinetic ion (GeFi) scheme [Lin et al., Plasma Phys. Controlled Fusion 47, 657 (2005)]. The characteristics of the simulated waves, such as wavelength, frequency, phase, and group velocities, agree well with the linear theoretical analysis. It is shown that a significant reflection component emerges in the conversion process between the slow mode and the fast mode when the scale length of the density variation is comparable to the local wavelength. The dependences of the reflection coefficient on the scale length of the density variation are compared with the results based on the linear full wave model for cold plasmas. It is indicated that the mode conversion for the waves with a frequency of 2.45 GHz (omega similar to 3 omega(LH), where omega(LH) represents the lower hybrid resonance) and within Tokamak relevant amplitudes can be well described in the linear scheme. As the frequency decreases, the modification due to the nonlinear term becomes important. For the low-frequency waves (omega similar to 1.3 omega(LH)), the generations of the high harmonic modes and sidebands through nonlinear mode-mode coupling provide new power channels and thus could reduce the reflection significantly. (C) 2016 AIP Publishing LLC.
WOS关键词PARAMETRIC-INSTABILITIES ; PLASMAS ; TOKAMAK ; WAVES
WOS研究方向Physics
语种英语
WOS记录号WOS:000375853700022
资助机构program of Fusion Reactor Physics and Digital Tokamak with the CAS "One-Three-Five" Strategic Planning ; program of Fusion Reactor Physics and Digital Tokamak with the CAS "One-Three-Five" Strategic Planning ; program of Fusion Reactor Physics and Digital Tokamak with the CAS "One-Three-Five" Strategic Planning ; program of Fusion Reactor Physics and Digital Tokamak with the CAS "One-Three-Five" Strategic Planning ; program of Fusion Reactor Physics and Digital Tokamak with the CAS "One-Three-Five" Strategic Planning ; program of Fusion Reactor Physics and Digital Tokamak with the CAS "One-Three-Five" Strategic Planning ; program of Fusion Reactor Physics and Digital Tokamak with the CAS "One-Three-Five" Strategic Planning ; program of Fusion Reactor Physics and Digital Tokamak with the CAS "One-Three-Five" Strategic Planning ; program of Fusion Reactor Physics and Digital Tokamak with the CAS "One-Three-Five" Strategic Planning ; program of Fusion Reactor Physics and Digital Tokamak with the CAS "One-Three-Five" Strategic Planning ; 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program of Fusion Reactor Physics and Digital Tokamak with the CAS "One-Three-Five" Strategic Planning ; program of Fusion Reactor Physics and Digital Tokamak with the CAS "One-Three-Five" Strategic Planning ; program of Fusion Reactor Physics and Digital Tokamak with the CAS "One-Three-Five" Strategic Planning ; program of Fusion Reactor Physics and Digital Tokamak with the CAS "One-Three-Five" Strategic Planning ; program of Fusion Reactor Physics and Digital Tokamak with the CAS "One-Three-Five" Strategic Planning ; program of Fusion Reactor Physics and Digital Tokamak with the CAS "One-Three-Five" Strategic Planning ; program of Fusion Reactor Physics and Digital Tokamak with the CAS "One-Three-Five" Strategic Planning ; program of Fusion Reactor Physics and Digital Tokamak with the CAS "One-Three-Five" Strategic Planning ; program of Fusion Reactor Physics and Digital Tokamak with the CAS "One-Three-Five" Strategic Planning ; JSPS-NRF-NSFC A3 Foresight Program in the field of Plasma Physics (NSFC)(11261140328) ; 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2013GB112010 ; 2013GB112010 ; 2013GB112010 ; 2013GB112010 ; 2013GB112010 ; 2013GB112010 ; 2013GB112010 ; 2013GB112010 ; 11405218 ; 11405218 ; 11405218 ; 11405218 ; 11405218 ; 11405218 ; 11405218 ; 11405218 ; 11405218 ; 11405218 ; 11405218 ; 11405218 ; 11405218 ; 11405218 ; 11405218 ; 11405218 ; 2015GB101003) ; 2015GB101003) ; 2015GB101003) ; 2015GB101003) ; 2015GB101003) ; 2015GB101003) ; 2015GB101003) ; 2015GB101003) ; 2015GB101003) ; 2015GB101003) ; 2015GB101003) ; 2015GB101003) ; 2015GB101003) ; 2015GB101003) ; 2015GB101003) ; 2015GB101003) ; 11405208) ; 11405208) ; 11405208) ; 11405208) ; 11405208) ; 11405208) ; 11405208) ; 11405208) ; 11405208) ; 11405208) ; 11405208) ; 11405208) ; 11405208) ; 11405208) ; 11405208) ; 11405208)
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/21870]  
专题合肥物质科学研究院_中科院等离子体物理研究所
作者单位1.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China
2.Chinese Acad Sci, Ctr Magnet Fus Theory, Hefei 230031, Peoples R China
3.Auburn Univ, Dept Phys, Allison Lab 206, Auburn, AL 36849 USA
推荐引用方式
GB/T 7714		 Jia, Guozhang,Xiang, Nong,Wang, Xueyi,et al. Particle simulations of mode conversion between slow mode and fast mode in lower hybrid range of frequencies[J]. PHYSICS OF PLASMAS,2016,23(1):012504.
APA Jia, Guozhang,Xiang, Nong,Wang, Xueyi,Huang, Yueheng,&Lin, Yu.(2016).Particle simulations of mode conversion between slow mode and fast mode in lower hybrid range of frequencies.PHYSICS OF PLASMAS,23(1),012504.
MLA Jia, Guozhang,et al."Particle simulations of mode conversion between slow mode and fast mode in lower hybrid range of frequencies".PHYSICS OF PLASMAS 23.1(2016):012504.

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来源：合肥物质科学研究院

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