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聚变等离子体中尘埃杂质的带电和运动特性及温度变化研究

Release Time:2019-03-11  Hits:

Indexed by: Journal Article

Date of Publication: 2010-12-01

Journal: 物理学报

Included Journals: Scopus、CSCD、ISTIC、PKU、SCIE

Volume: 59

Issue: 12

Page Number: 8692-8700

ISSN: 1000-3290

Key Words: 尘埃;聚变等离子体;充电方程

Abstract: 研究了在磁约束聚变环境中不同等离子体参数下尘埃粒子的带电、运动及温度特性.研究表明:电子温度与离子温度比对尘埃带电量有明湿的影响;二次电子发射会显著减少尘埃带电量;尘埃充电的弛豫时间比在实验室加工等离子中要短得多.在考虑离子拖曳力作用下,尘埃粒子的速度可达10-2m·s-1的量级;针对碳材料计算得到粒子的寿命达毫秒量级.这些数值研究结果与实验观测结果相一致.

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