| Budget Amount *help |
¥24,570,000 (Direct Cost: ¥18,900,000、Indirect Cost: ¥5,670,000)
Fiscal Year 2020: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2019: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2017: ¥21,970,000 (Direct Cost: ¥16,900,000、Indirect Cost: ¥5,070,000)
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| Outline of Final Research Achievements |
In this research, two-photon absorption laser-induced fluorescence spectroscopy has been applied to the microwave ion thruster that was used for the asteroid explorer Hayabusa2. It revealed that neutrals are excited to metastable, which resulted in the increase of ionization rate and in the improvement of thrust performance in the ion source. Also, we applied it to the plume region of the microwave cathode. The dynamics of the xenon neutral number densities was revealed.
The above achievements have been published in 13 peer reviewed journal papers, and currently three review processes are undergoing.
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