Investigations of plasma with multi-phase matters produced by high heat flux pulsed plasmas and its heat mitigation effects

2016 Fiscal Year Final Research Report

• Project/Area Number: 26400535
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Plasma science
• Research Institution: University of Hyogo
• Principal Investigator: KIKUCHI YUSUKE 兵庫県立大学, 工学研究科, 准教授 (00433326)
• Co-Investigator(Renkei-kenkyūsha): YABUUCHI TOSHIKI 大阪大学, 大学院工学研究科, 助教 (20397772)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 重相構造プラズマ / 磁化プラズマガン / 高熱流パルスプラズマ / プラズマ材料相互作用 / ELM / 蒸気遮蔽効果

Outline of Final Research Achievements

Energy transfer processes on plasma with multi-phase matters, in which solid, liquid, vapor, and plasma phase simultaneously appear in a narrow space, have been studied using a magnetized coaxial plasma gun and a steady state/pulse combined plasma irradiation device. The absorbed energy density was measured with calorimeters having heat receiving materials of aluminum (Al) and tungsten (W). As a result, the absorbed energy on the W material was ~70% of that in the incident helium (He) pulsed plasma, whereas only ~20% of the plasma energy was absorbed on the Al material. Al layer formation was identified with a high-speed camera with a bandpass filter of 394 nm, and dynamic behaviors of Al neutral and He ion emissions were revealed using a time-resolved multichannel spectroscopy.

Free Research Field

プラズマ理工学