Dynamics of electron internal transport barrier formation at the H-L transition on EAST
文献类型：期刊论文
| 作者 | Han, X.3 ; Liu, Y.3; Zhou, T. F.3; Zhang, T.3; Shi, T. H.3; Li, Y. Y.3; Yuan, Y.3; Mao, S. T.3; Jin, Y. F.3; Wu, X. H.2,3
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| 刊名 | NUCLEAR FUSION
 |
| 出版日期 | 2022-06-01 |
| 卷号 | 62 |
| ISSN号 | 0029-5515 |
| 关键词 | internal transport barrier RSAEs II-L transition EAST |
| DOI | 10.1088/1741-4326/ac5c75 |
| 通讯作者 | Liu, Y.(liuyong@ipp.ac.cn) ; Gao, X.(xgao@ipp.ac.cn) |
| 英文摘要 | The dynamics of electron-internal transport barrier (e-ITB) formation is studied in the hybrid plasma of neutral beam injection and lower hybrid wave heating on EAST. The e-ITB is observed to be repetitively formed at the H-L transition, where the relaxation process of core radiation triggers an increase in neutron yield and core electron temperature. A reversed q-profile is beneficial for generating the barrier, identified by the appearance of reversed shear Alfven eigenmodes (RSAEs). The dimensionless parameter of the normalized Larmor radius (rho(T)e*) is estimated to visualize the dynamic behavior of the e-ITB. It is found that the e-ITB forms once the electron rho(Te)* exceeds 0.014, and the RSAEs are accompanied by the e-ITB formation. The barrier foot moves inwards until the L-H transition occurs, where the H-mode pedestal or type-I edge localized mode (ELM) strongly influences the e-ITB intensity. The results of thermal transport modeling show a significant reduction in the core thermal transport coefficient in the electron channel while maintaining a nearly unchanged ion transport level as the e-ITB evolves. |
| 资助项目 | National Key R&D Program of China[2017YFE0301205] ; National Key R&D Program of China[2019YFE03040002] ; National Natural Science Foundation of China[12175277] ; National Natural Science Foundation of China[11975271] ; National Natural Science Foundation of China[11875289] ; National Natural Science Foundation of China[11805136] ; National Natural Science Foundation of China[12075284] ; China Postdoctoral Science Foundation[2021M703256] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| 出版者 | IOP Publishing Ltd |
| WOS记录号 | WOS:000784224300001 |
| 资助机构 | National Key R&D Program of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/128493]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Liu, Y.; Gao, X. |
| 作者单位 | 1.Shenzhen Univ, Adv Energy Res Ctr, Shenzhen 518060, Peoples R China 2.Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China 3.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Anhui, Peoples R China |
| 推荐引用方式 GB/T 7714 | Han, X.,Liu, Y.,Zhou, T. F.,et al. Dynamics of electron internal transport barrier formation at the H-L transition on EAST[J]. NUCLEAR FUSION,2022,62. |
| APA | Han, X..,Liu, Y..,Zhou, T. F..,Zhang, T..,Shi, T. H..,...&Gao, X..(2022).Dynamics of electron internal transport barrier formation at the H-L transition on EAST.NUCLEAR FUSION,62. |
| MLA | Han, X.,et al."Dynamics of electron internal transport barrier formation at the H-L transition on EAST".NUCLEAR FUSION 62(2022). |
入库方式： OAI收割
来源：合肥物质科学研究院
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