Development of New Steady State Plasma Source with High Heat Flux Using Wave Heating

利用波加热开发新型高热通量稳态等离子体源

• 批准号: 03558003
• 负责人: TAKAMURA Shuichi
• 金额: $ 8.64万
• 依托单位: Nagoya University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research (B)
• 财政年份: 1991
• 资助国家: 日本
• 起止时间: 1991 至 1993
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-03558003/
• 关键词: Divertor-Plasma Simulator; Wave Heating; Whistler Wave Heating; Plasma Heat Flow; Fusion; Ion Cyclotron Wave Heating; Fluid-Code Simulation; Plasma-Wall Interaction; ホイッスラー波加熱; ダイバータプラズマ; NAGDIS-I; プラズマ源; プラズマ-壁相互作用; ダイバ-タ

(1) Plasmsa heat flux to the target plate in the wide density region below 10^<19>m^<-3> was measured with the calorimetric measurement and the radiation thermometer. The thoretical heat flux was estimated from the experimental values of the electron density and temperature, and the plasma potential. From these measurement it is concluded that the plasma heat flux is strongly related with the ion reflection.(2) The propagation and absorption of excited waves was calculated theoretically and compared with the experimental observation. The observed dispersion of the excited waves is consistent with the whistler wave but the damping length along the magnetic field is much shorter than the theoretical one.(2) High density plasma around 10^<19>m^<-3> is obtained stably by the pulse discharge.(3) Characteristics of the wave heating in NAGDIS-I was studied using B2 code. In the high neutral pressure region, the wave power is mainly used to ionize the neutral particles. Cosequently the electron density increases drastically and ion temperature rises by the enhancement of the electron-ion energy transfer.(4) Electron temperature measurement using HeI intensity ratio in the plasma with hot electron was studied. In oder to apply this method in the density region below 10^<19>m^<-3>, HeI intensity ratio was calculated by collisional radiative model and the modification of HeI intensity ratio by the presence of the hot electrons was shown.

(1)用量热法和辐射温度计测量了10^&lt；19&gt；-3&gt；宽密度范围内靶板的等离子体热流密度。由电子密度、温度和等离子体电势的实验值估算了理论热流密度。从测量结果可以看出，等离子体热流密度与离子反射密切相关。(2)对激发波的传播和吸收进行了理论计算，并与实验结果进行了比较。观测到的激发波的色散与哨声波一致，但沿磁场方向的衰减长度远小于理论值。(2)脉冲放电稳定地获得了10^&lt；19&gt；m；-3&gt；附近的高密度等离子体。(3)用B2程序研究了NAGDIS-I中的波加热特性。在高中性压区，波能主要用于电离中性粒子。同时，随着电子-离子能量传递的增强，电子密度急剧增加，离子温度升高。(4)研究了高能电子等离子体中电子温度的HEI强度比测量。为了将该方法应用于密度小于10^&lt；19&gt；m^&lt；-3&gt；，用碰撞辐射模型计算了高能电子对高能电子强度比的修正。

项目成果

S.Masuzaki: "The reduction of plasma heat flow to the divertor plate by the ponderomotive force." 11th Int.Conf.on Plasma surface Interactions in Controlled Fusion Devices. (To be Presented).

S.Masuzaki：“通过有质动力减少流向偏滤器板的等离子体热流。”

S.Masuzaki: "The reduction of plasma heat flow to the divertor plate by the ponderomotive force" 11th Int.Conf.on Plasma Surface Interactions in Controlled Fusion Devices 発表予定.

S.Masuzaki：“通过有质动力减少流向偏滤器板的等离子体热流”将在第 11 届受控聚变装置中等离子体表面相互作用国际会议上发表。

M.Kojima: "Experimental and Numerical Simulation Studies on Time Resoluved Structure of Imprurity Generation and Transport in NAGDIS-I" 11th Int.Conf.on Plasma Surface Interactions in Controlled Fusion Devices 発表予定.

M.Kojima：“NAGDIS-I 中杂质生成和传输的时间分辨结构的实验和数值模拟研究”将在第 11 届受控聚变装置中等离子体表面相互作用国际会议上发表。

M.Kojima: "Experimental and Numerical Simulation Studies on Time Resolved Structure of Impurity Generation and Transport in NAGDIS-I." 11th Int. Conf. on Plasma surface Interactions in Controlled Fusion Devices. (To be Presented).

M.Kojima：“NAGDIS-I 中杂质生成和传输的时间分辨结构的实验和数值模拟研究”。

S.Masuzaki: "Experimental and Theoretical Study on Plasma Heat Flow to Plasma Facing Materials." Proc.of 20th Europ.Conf.on Controlled Fusion and Plasma Physics. Vol.17C, Part III. 743-746 (1993)

S.Masuzaki：“等离子体热流到等离子体表面材料的实验和理论研究。”