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OVERVIEW OF ALFVEN EIGENMODE EXPERIMENTS IN JET

机译:喷气式飞机的本征模式实验概述

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Results from the first experiments to drive Alfven Eigenmodes (AEs) with antennas external to a tokamak plasma are presented. In ohmically heated plasma discharges, direct experimental measurements of the damping of toroidicity induced AEs (TAEs) have allowed an identification of different regimes corresponding to different dominant TAE absorption mechanisms with a wide range of damping rates, 10~(-3) ≤ γ/ω ≤ 10~(-1). In plasmas heated by ion cyclotron resonance heating, neutral beam injection heating, lower hybrid heating and high plasma current ohmic heating, a new class of weakly damped Alfven eigenmodes, the kinetic Alfven eigenmodes, predicted in theoretical models that include finite Larmor radius and finite parailel electric field effects, has been identified experimentally.
机译:给出了用托卡马克等离子体外部的天线驱动Alfven本征模式(AE)的第一个实验的结果。在欧姆加热的等离子体放电中,直接实验性地测量了由环形感应的AE(TAE)的阻尼,从而确定了与不同的主要TAE吸收机制相对应的不同机制,其阻尼率范围很广,10〜(-3)≤γ/ ω≤10〜(-1)。在通过离子回旋共振加热,中性束注入加热,较低的混合加热和高等离子体电流欧姆加热加热的等离子体中,在理论模型中预测的新型弱阻尼Alfven本征模式,即动力学Alfven本征模式,包括有限的拉莫尔半径和有限的平行四边形电场效应,已通过实验确定。

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