Simulated effect of edge plasma density parameters on lower hybrid wave scattering in EAST
文献类型：期刊论文
| 作者 | Wu, C. B.1,2; Ding, B. J.1 ; Baek, S. G.3; Li, M. H.1; Wallace, G. M.3; Li, Y. C.4; Yan, G. H.1,2
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| 刊名 | PHYSICS OF PLASMAS
 |
| 出版日期 | 2022-02-01 |
| 卷号 | 29 |
| ISSN号 | 1070-664X |
| DOI | 10.1063/5.0077657 |
| 通讯作者 | Ding, B. J.(bjding@ipp.ac.cn) |
| 英文摘要 | The incorporation of lower hybrid (LH) wave spectrum broadening in the poloidal wavenumber ( k theta) space at the last close field surface (LCFS) is reported to lead to better agreement of the modeled LH wave current profile with the experimental results [Baek et al., Nucl. Fusion 61, 106034 (2021)]. To further understand its underlying mechanism and find the possible influence factors, effects of wave scattering caused by drift-wave type density fluctuation on the probability distribution of the LH wave polar refractive index ( N theta ) at the LCFS are studied under density parameters in the scrape-off-layer. According to a scattering model [P. T. Bonoli and E. Ott, Phys Fluids 25(2), 359-375 (1982)], scattering probability and scattering angle distribution are two main factors that determine the degree of spectral broadening. Studies presented here show that the total scattering probability increases first and then decreases as the wave propagates toward a smaller normalized radius of poloidal magnetic flux ( rho). The degree of spectral broadening is found to depend on the density and density fluctuation together by changing the intensity and a proportion of the geometrical optics approximation term and the E x B drift term in the scattering model. Furthermore, the fluctuation correlation length can significantly modify the probability distribution of N theta at the LCFS, which is found to significantly change the LH wave current profile. |
| WOS关键词 | PARTICLE SIMULATION ; CURRENT DRIVE ; FLUCTUATIONS ; ABSORPTION ; PROFILE |
| 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] ; United States Department of Energy[DE-SC0010492] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| 出版者 | AIP Publishing |
| WOS记录号 | WOS:000761044600001 |
| 资助机构 | National Key Research and Development Program of China ; National Natural Science Foundation of China ; United States Department of Energy |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/127763]  |
| 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.,Baek, S. G.,et al. Simulated effect of edge plasma density parameters on lower hybrid wave scattering in EAST[J]. PHYSICS OF PLASMAS,2022,29. |
| APA | Wu, C. B..,Ding, B. J..,Baek, S. G..,Li, M. H..,Wallace, G. M..,...&Yan, G. H..(2022).Simulated effect of edge plasma density parameters on lower hybrid wave scattering in EAST.PHYSICS OF PLASMAS,29. |
| MLA | Wu, C. B.,et al."Simulated effect of edge plasma density parameters on lower hybrid wave scattering in EAST".PHYSICS OF PLASMAS 29(2022). |
入库方式： OAI收割
来源：合肥物质科学研究院
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