北京大学等离子体联合实验装置

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• 论文作者：吴一帆 ; 余羿 ; 肖池阶 ; 闻一之 ; 陈逸航 ; 杨肖易 ; 袁博达 ; 夏世波 ; 余照飞 ; 刘志宏 ; 王龙 ; 吴杰峰 ; 叶民友
• 年：2016
• 作者机构：中国科学技术大学核科学与技术学院;北京大学物理学院;中国科学技术大学近代物理系;合肥聚能电物理高技术开发有限公司;中国科学院物理所;
• 论文关键词：直线等离子体装置 ; 直柱放电 ; 会切场放电 ; 自发旋转
• 英文论文关键词：linear plasma device ; cylindrical geometry ; cusp geometry ; intrinsic rotation
• 会议召开时间：2016-10-21
• 会议录名称：安徽省第四届（2016年）“卓凌杯”真空科技青年创新大赛暨学术研讨会论文集
• 语种：中文
• 分类号：O53
• 学会代码：AHZK
• 会议名称：安徽省第四届（2016年）“卓凌杯”真空科技青年创新大赛暨学术研讨会
• 会议地点：中国安徽安庆
• 主办单位：安徽省真空学会
• 学会名称：安徽省真空学会
• 页数：7
• 文件大小：745k
• 原文格式：D
• 会议级别：地方

摘要

本文介绍了北京大学等离子体联合实验装置(PPT)的建造,并给出了初步的实验结果。该装置为直线稳态等离子体装置,采用螺旋波激发氩等离子体,其密度可以达到1013cm-3量级,温度约5-10ev。装置中心磁场强度2000G,可根据线圈接线方式的不同,实现直柱位形放电或者会切场位形放电,同时通过给在等离子体截面中心的轴向内置导体通稳态5000A电流,可以在等离子体中形成可控的极限磁场,改善约束。实验发现,等离子体密度与放电气体的气压、磁场强度、磁场位形、波源功率、吸收效率等因素密切相关,在直柱放电下,径向电场在百福特量级,在会切场位形下,还同时存在同量级的轴向电场,这些电场共同作用,驱动等离子体自发旋转。
In this article, we present the foundation of Peking University Plasma Test(PPT)device, together with some first results. PPT is a linear steady-state plasma device,which has a cylindrical vacuum chamber with 500 mm diameter and 1000 mm length.It can discharge not only a cylindrical geometry but also a cusp geometry in a center magnetic field of about 2000 Gauss. An inner copper conductor located in the center of cylindrical vacuum can shape a poloidal magnetic field for a better plasma confinement. A 13.6MHz helicon source can produce and sustain a steady-state plasma with a density up to over 1013cm-3. Radial electric field exists, resulting in an obvious plasma intrinsic rotation. All of these characteristics make it convenient for basic plasma physics experiments.

引文

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