Modeling the spectral modification of lower hybrid wave in the presence of drift-wave type density fluctuation in the scrape-off-layer of the EAST tokamak

doi:10.1063/5.0053459

	Modeling the spectral modification of lower hybrid wave in the presence of drift-wave type density fluctuation in the scrape-off-layer of the EAST tokamak
	Wu, C. B.1,2; Ding, B. J.1; Li, M. H.1; Baek, S. G.3; Wallace, G. M.3; Li, Y. C.4; Yan, G. H.1,2; Liu, S. C.1
刊名	PHYSICS OF PLASMAS
	2021-08-01
卷号	28
ISSN号	1070-664X
DOI	10.1063/5.0053459
通讯作者	Ding, B. J.(bjding@ipp.ac.cn)
英文摘要	The spectrum change of the lower hybrid (LH) waves caused by a low-frequency density fluctuation in the scrape-off-layer is studied by applying the wave scattering model developed by Bonoli and Ott [Phys. Fluids 25, 359 (1982)] via a Monte Carlo method. Due to the influence of the density fluctuation, the perpendicular component of the LH wave-vector can be rotated in the 2D perpendicular space, which will further change the ray trajectory of the LH wave. A ray-tracing model specific to this purpose is developed to evaluate the probability distribution of both the poloidal refractive index (N-theta) and the parallel refractive index ( N-parallel to) of the LH wave at the last closed flux surface (LCFS). The scattering probability and the rotation scattering angle are determined by the combined effect from the geometric optics approximation term and the ExB drift term in the LH tensor elements. The probability distributions of N-parallel to and N-theta at the LCFS are studied using the EAST parameters as a function of wave frequency, the initial N-parallel to, and the polar injection position, which may influence the lower hybrid current drive efficiency.
资助项目	National Key Research and Development Program of China[2016YFA0400603] ; National Key Research and Development Program of China[2016YFA0400602] ; National Natural Science Foundation of China[11975266] ; National Natural Science Foundation of China[11775259] ; National Natural Science Foundation of China[11675214] ; National Natural Science Foundation of China[11805233] ; National Natural Science Foundation of China[U19A20113]
WOS关键词	MAGNETIC RIPPLE ; CURRENT DRIVE ; PROPAGATION ; SCATTERING ; ACCESSIBILITY ; PLASMAS
WOS研究方向	Physics
语种	英语
出版者	AMER INST PHYSICS
WOS记录号	WOS:000685870100003
资助机构	National Key Research and Development Program of China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/124359]
专题	中国科学院合肥物质科学研究院
通讯作者	Ding, B. J.
作者单位	1.Chinese Acad Sci, Hefei Inst Phys Sci, Inst Plasma Phys, Hefei 230031, Peoples R China 2.Univ Sci & Technol China, Hefei 230026, Peoples R China 3.MIT Plasma Sci & Fus Ctr, Cambridge, MA 02139 USA 4.Shenzhen Univ, Coll Optoelect Engn, Shenzhen 518060, Peoples R China
推荐引用方式 GB/T 7714	Wu, C. B.,Ding, B. J.,Li, M. H.,et al. Modeling the spectral modification of lower hybrid wave in the presence of drift-wave type density fluctuation in the scrape-off-layer of the EAST tokamak[J]. PHYSICS OF PLASMAS,2021,28.
APA	Wu, C. B..,Ding, B. J..,Li, M. H..,Baek, S. G..,Wallace, G. M..,...&Liu, S. C..(2021).Modeling the spectral modification of lower hybrid wave in the presence of drift-wave type density fluctuation in the scrape-off-layer of the EAST tokamak.PHYSICS OF PLASMAS,28.
MLA	Wu, C. B.,et al."Modeling the spectral modification of lower hybrid wave in the presence of drift-wave type density fluctuation in the scrape-off-layer of the EAST tokamak".PHYSICS OF PLASMAS 28(2021).