| Budget Amount *help |
¥23,400,000 (Direct Cost: ¥18,000,000、Indirect Cost: ¥5,400,000)
Fiscal Year 2017: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2016: ¥6,760,000 (Direct Cost: ¥5,200,000、Indirect Cost: ¥1,560,000)
Fiscal Year 2015: ¥14,690,000 (Direct Cost: ¥11,300,000、Indirect Cost: ¥3,390,000)
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| Outline of Final Research Achievements |
The streamer discharge in open air is one of the important types of atmospheric-pressure non-thermal plasma, and it has been attracting interest in a wide range application fields: environmental pollution control, plasma-assisted ignition and combustion, and plasma medicine. However, the processes by which reactive species are produced in air streamers are not fully understood because the electron density determination using conventional measurement
systems has been extremely difficult.
In order to overcome the difficulty, we developed novel electron density sensors capable of visualizing two-dimensional electron density distributions from single-shot recordings under sensitivity of 10^20m^-3 and temporal resolution of 1ns. These sensors were successfully used for the electron density imaging over the air streamer discharges and production mechanisms of several reactive species were elucidated.
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