Estimation of plasma density perturbation from dusty plasma injection by laser irradiation on tungst

• 作 者: In Je KANG Min-Keun BAE In Sun PARK Min Ji LEE Kyu-Sun CHUNG
• 机 构: Department of Electrical Engineering, Hanyang University, Seoul 133791, Republic of Korea“,”Plasma T
• 出 处: 等离子体科学和技术（英文版）
• 发表日期: 2020年4期
• 关键词: plasma density perturbation dusty plasma tungsten dust DiPS

To investigate the interaction of dusty plasma with magnetized plasmas at divertor plasma simulator,radial profiles of plasma density (ne) and electron temperature were measured in terms of plasma discharge currents and magnetic flux intensity by using a fast scanning probes system with triple tips.Dusty plasma with dusts (a generation rate of 3 μg s-1 and a size of 1-10 μm)was produced via interactions between a high-power laser beam and a full tungsten target.As ne increases,the scale of the effects of dusty plasma injection on magnetized plasmas was decreased.Also,the duration of transient fluctuation was reduced.For numerical estimation of plasma density perturbation due to dusty plasma injection,the result was ～10％ at a core region of the magnetized plasma with ne of (2-5) × 1011 cm-3 at steady state condition.