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
文献类型：期刊论文
| 作者 | Wu, C. B.2,3; Ding, B. J.2 ; Li, M. H.2; Baek, S. G.1; Wallace, G. M.1; Li, Y. C.4; Yan, G. H.2,3; Liu, S. C.2
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| 刊名 | PHYSICS OF PLASMAS
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| 出版日期 | 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. |
| WOS关键词 | MAGNETIC RIPPLE ; CURRENT DRIVE ; PROPAGATION ; SCATTERING ; ACCESSIBILITY ; PLASMAS |
| 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研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000685870100003 |
| 出版者 | AMER INST PHYSICS |
| 资助机构 | National Key Research and Development Program of China ; National Natural Science Foundation of China |
| 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.MIT Plasma Sci & Fus Ctr, Cambridge, MA 02139 USA 2.Chinese Acad Sci, Hefei Inst Phys Sci, Inst Plasma Phys, Hefei 230031, Peoples R China 3.Univ Sci & Technol China, Hefei 230026, Peoples R China 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). |
入库方式： OAI收割
来源：合肥物质科学研究院
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