Analysis on the azimuthal velocity fluctuation of drift-wave turbulence and zonal flow via dynamic programming based time-delay estimation technique in a linear magnetized plasma device
文献类型：期刊论文
| 作者 | Chen Ran1,2; Liu A-Di1; Shao Lin-Ming2; Hu Guang-Hai1,2; Jin Xiao-Li1 |
| 刊名 | ACTA PHYSICA SINICA
 |
| 出版日期 | 2014-09-20 |
| 卷号 | 63页码:10 |
| 关键词 | dynamic programming based time-delay estimation zonal flow drift-wave turbulence velocity fluctuation |
| ISSN号 | 1000-3290 |
| DOI | 10.7498/aps.63.185201 |
| 英文摘要 | The effective measurement of plasma turbulence flow field is of great help for better understanding the turbulence in magnetically confined plasmas, and experimentally verifying the theoretically predicted phenomenon such as zonal flows. In this article, the dynamic programming based time-delay estimation technique is employed for the first time to estimate azimuthal velocity fluctuation of drift-wave turbulence in a linear magnetized plasma generated via a hot cathode plasma source. Analysis results clearly reproduce the zonal flow structure which is spontaneously generated by nonlinear energy transfer from the drift-wave turbulence. Moreover, via the comparison among the zonal flow (ZF) characteristics estimated respectively by the turbulent fluctuations of plasma located in different frequency regions, we further evaluate the dependences of accuracy and response for estimating ZF property using this newly developed time-delay estimation algorithm on the level of relative incoherent noise in the carrier waves. This work provides an example and reference value for deeper exploration on plasma turbulence and in particular the relevant flow field with the help of the dynamic programming based time-delay estimation technique. |
| WOS关键词 | VELOCIMETRY ; DENSITY |
| 资助项目 | National Natural Science Foundation of China[11205193] ; Specialized Research Fund for the Doctoral Program of Higher Education of China[20113402120023] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000342679900036 |
| 出版者 | CHINESE PHYSICAL SOC |
| 资助机构 | National Natural Science Foundation of China ; Specialized Research Fund for the Doctoral Program of Higher Education of China |
| 源URL | [http://119.78.100.186/handle/113462/46546]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Chen Ran |
| 作者单位 | 1.Univ Sci & Technol China, Dept Modern Phys, CAS Key Lab Plasma Phys, Hefei 230026, Peoples R China 2.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen Ran,Liu A-Di,Shao Lin-Ming,et al. Analysis on the azimuthal velocity fluctuation of drift-wave turbulence and zonal flow via dynamic programming based time-delay estimation technique in a linear magnetized plasma device[J]. ACTA PHYSICA SINICA,2014,63:10. |
| APA | Chen Ran,Liu A-Di,Shao Lin-Ming,Hu Guang-Hai,&Jin Xiao-Li.(2014).Analysis on the azimuthal velocity fluctuation of drift-wave turbulence and zonal flow via dynamic programming based time-delay estimation technique in a linear magnetized plasma device.ACTA PHYSICA SINICA,63,10. |
| MLA | Chen Ran,et al."Analysis on the azimuthal velocity fluctuation of drift-wave turbulence and zonal flow via dynamic programming based time-delay estimation technique in a linear magnetized plasma device".ACTA PHYSICA SINICA 63(2014):10. |
入库方式： OAI收割
来源：近代物理研究所
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