Response of plasma turbulence against externally-controlled perturbations  

作　　者：S. I. Itoh K. Itoh 

机构地区：[1]Research Institute for Applied Mechanics, Kyushu University [2]Itoh Research Center for Plasma Turbulence, Kyushu University [3]National Institute for Fusion Science

出　　处：《Chinese Physics B》2012年第9期385-395,共11页中国物理B（英文版）

基　　金：Project supported by Grants-in-aid for Scientific Research of JSPF, Japan (Grant Nos. 21224014 and 23244113);the Collaboration Programs of NIFS (Grant No. NIFS10KOAP023);the RIAM of Kyushu University;Asada Science Foundation

摘　　要：A theory of the dynamic response of the turbulent plasma against the externally-controlled perturbations is reported. Based on Mori＇s method [Prog. Theor. Phys. 33 423 （1965）], the nonlinear force is assmned to be separated into the memory function and the nonlinear fluctuating force. The former corresponds to the damping term, and the latter is categorized into the noise term. The response of the turbulent plasma against the externally-controlled source is formulated. The response kernel, which connects the externally-controlled source and the response of the turbulent field, is shown to have both the nonlocal property （in space） and the non-Markovian response （in time）. A discussion is made on the nonlocal and non-Markovian response, including the case of disparate-scale interactions. A new method is proposed to observe experimentally the nonlocal interaction in the drift wave turbulence via the zonal flows.A theory of the dynamic response of the turbulent plasma against the externally-controlled perturbations is reported. Based on Mori＇s method [Prog. Theor. Phys. 33 423 （1965）], the nonlinear force is assmned to be separated into the memory function and the nonlinear fluctuating force. The former corresponds to the damping term, and the latter is categorized into the noise term. The response of the turbulent plasma against the externally-controlled source is formulated. The response kernel, which connects the externally-controlled source and the response of the turbulent field, is shown to have both the nonlocal property （in space） and the non-Markovian response （in time）. A discussion is made on the nonlocal and non-Markovian response, including the case of disparate-scale interactions. A new method is proposed to observe experimentally the nonlocal interaction in the drift wave turbulence via the zonal flows.

关 键 词：turbulent transport nonlocal and non-Markovian response 

分 类 号：O533[理学—等离子体物理]