Edge Electrostatic Fluctuation Characteristics in the Sino-United Spherical Tokamak

Chin. Phys. Lett.

2004, Vol. 21

Issue (8): 1578-1581 DOI:

Original Articles

Edge Electrostatic Fluctuation Characteristics in the Sino-United Spherical Tokamak

WANG Wen-Hao¹;HE Ye-Xi¹;GAO Zhe¹;ZENG Li¹,ZHANG Guo-Ping¹;XIE Li-Feng¹;FENG Chun-Hua²;XIAO Qiong¹;LI Xiao-Yan¹

¹Department of Engineering Physics, Tsinghua University, Beijing 100084 ²Institute of Physics, Chinese Academy of Sciences, Beijing 100080

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WANG Wen-Hao, HE Ye-Xi, GAO Zhe et al 2004 Chin. Phys. Lett. 21 1578-1581

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Abstract Edge plasma parameters, including electron temperature T_e, density n_e, plasma potential Ф_p , radial electric field E_r and the corresponding fluctuations in the Sino-United Spherical Tokamak, have been systematically measured with Langmuir probe arrays. Wavenumber spectrum analyses show that edge fluctuations have a radial propagation character of the drift wave turbulence, with a characteristic radial phase velocity v_phr ～ 0.7 km.s^-1 in the scrape-off layer and vsuB>phr ～ 0.9-1.4km.s^-1 in the plasma edge.

Keywords: 52.40.Hf 52.25.Gj Fa

Published: 01 August 2004

PACS:	52.40.Hf	(Plasma-material interactions; boundary layer effects)
	52.25.Gj	(Fluctuation and chaos phenomena)
	52.55
	Fa

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2004/V21/I8/01578

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	WANG Wen-Hao
	HE Ye-Xi
	GAO Zhe
	ZENG Li
	ZHANG Guo-Ping
	XIE Li-Feng
	FENG Chun-Hua
	XIAO Qiong
	LI Xiao-Yan

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