The confinement of helium tokamak plasmas, impact of electron heating, turbulent transport and zonal flows

Manas P.; Angioni C.; Kappatou A.; Ryter F.; Schneider P. A.

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The confinement of helium tokamak plasmas, impact of electron heating, turbulent transport and zonal flows

机译：氦托卡马克等离子体的局限性，电子加热的影响，湍流传输和纬向流

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In tokamaks, helium plasmas arc regularly observed to have significantly lower confinement than deuterium plasmas. For the first time, in the ASDEX Upgrade tokamak the confinement of helium plasmas is experimentally demonstrated to increase with increasing fraction of electron healing, reaching values comparable to those of the deuterium plasmas. Nonlinear electromagnetic gyrokinetic simulations show that the different impact of zonal flows in regulating the core turbulence in the limit of low electron heating in D and He plasmas breaks the gyro-Bohm scaling of transport, leading to higher levels of transport in He. The thermal coupling between electrons and ions and stronger destabilization of electron temperature gradient modes lead to reduced confinement at the edge of He plasmas.

机译：在托卡马克中，经常观察到氦等离子体的局限性比氘等离子体低得多。第一次，在ASDEX升级托卡马克中，实验证明氦等离子体的局限性随着电子治愈率的增加而增加，达到与氘等离子体相当的值。非线性电磁回旋动力学模拟表明，在D和He等离子体的低电子加热极限中，地带流在调节堆芯湍流方面的不同影响会破坏陀螺-玻姆的输运比例，从而导致He的输运水平更高。电子与离子之间的热耦合以及电子温度梯度模式的更强失稳性导致He等离子体边缘处的约束减小。

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来源
《Nuclear fusion》 |2019年第1期|014002.1-010202.5|共5页
作者
Manas P.; Angioni C.; Kappatou A.; Ryter F.; Schneider P. A.;
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作者单位

Max Planck Inst Plasma Phys, D-85748 Garching, Germany;

Max Planck Inst Plasma Phys, D-85748 Garching, Germany;

Max Planck Inst Plasma Phys, D-85748 Garching, Germany;

Max Planck Inst Plasma Phys, D-85748 Garching, Germany;

Max Planck Inst Plasma Phys, D-85748 Garching, Germany;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
原文格式 PDF
正文语种 eng
中图分类
关键词
helium plasmas; turbulent transport; gyro-Bohm scaling; energy confinement;

机译：氦等离子体;湍流输运;陀螺-玻姆结垢;能量约束;

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专利

1. Evolutions of zonal flows and turbulence in a tokamak edge plasma during electron cyclotron resonance heating [J] . D.F. Kong, A.D. Liu, T. Lan, Nuclear fusion . 2013,第12期

机译：电子回旋加速器共振加热过程中托卡马克边缘等离子体中纬向流和湍流的演变
2. Characteristics of trapped electron transport, zonal flow staircase, turbulence fluctuation spectra in elongated tokamak plasmas [J] . Qi Lei, Kwon Jae-Min, Hahm T. S., Nuclear fusion . 2019,第2期

机译：托卡马克等离子体中的俘获电子输运，地带流动阶梯，湍流涨落谱
3. Frequency-Resolved Nonlinear Turbulent Energy Transfer into Zonal Flows in Strongly Heated L-Mode Plasmas in the HL-2A Tokamak [J] . M. Xu, G. R. Tynan, P. H. Diamond, Physical review letters . 2012,第24期

机译：HL-2A托卡马克中强加热L型等离子体中频率分辨的非线性湍流能量转移到带状流中
4. The confinement of helium tokamak plasmas, impact of electron heating, turbulent transport and zonal flows [C] . P. Manas, C. Angioni, A. Kappatou, EPS Conference on Plasma Physics . 2018

机译：氦Tokamak等离子体的限制，电子加热，湍流运输和区流的影响
5. Particle confinement and exhaust in magnetically contained fusion plasmas: Investigation using the pump limiter ALT-II with high-power heating in the TEXTOR tokamak. [D] . Gray, Douglas Stuart. 1996

机译：含磁性的聚变等离子体中的粒子约束和排气：在TEXTOR托卡马克中使用泵限制器ALT-II进行大功率加热。
6. Generalized flows intrinsic stochasticity and turbulent transport [O] . Weinan E Vanden Eijnden, Eric Vanden Eijnden 2000

机译：广义流内在随机性和湍流传输
7. The confinement of helium tokamak plasmas, impact of electron heating, turbulent transport and zonal flows [O] . P. Manas, C. Angioni, A. Kappatou, 2018

机译：氦Tokamak等离子体的限制，电子加热，湍流运输和区流的影响
8. Electron Heating and Anomalous Transport in the Initial Stage of Turbulent Heating of a Plasma [R] . Iguchi, H. 1977

机译：等离子体湍流加热初期的电子加热和异常输运

The confinement of helium tokamak plasmas, impact of electron heating, turbulent transport and zonal flows

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