専門・基盤技術グループ

森下 貴都

モリシタ タカト  (Takato Morishita)

基本情報

所属
国立研究開発法人宇宙航空研究開発機構 宇宙科学研究所 研究開発員
学位
博士(工学)(2022年3月 東京大学)

研究者番号
30968475
ORCID ID
 https://orcid.org/0000-0002-4271-9254
J-GLOBAL ID
202201009111687275
researchmap会員ID
R000042757

論文

 11
  • Takato Morishita, Ryudo Tsukizaki, Kazutaka Nishiyama
    AIP Advances 2024年6月1日  査読有り筆頭著者責任著者
  • Soichiro Tsuji, Takato Morishita, Ayumu Nono, Ryudo Tsukizaki, Kazutaka Nishiyama
    Acta Astronautica 2024年5月  査読有り
  • Ayumu Nono, Takato Morishita, Satoshi Hosoda, Ryudo Tsukizaki, Kazutaka Nishiyama
    Acta Astronautica 212 130-138 2023年11月  査読有り
  • Takato Morishita, Ryudo Tsukizaki, Kazutaka Nishiyama, Hitoshi Kuninaka
    Journal of Applied Physics 131(1) 013301-013301 2022年1月7日  査読有り招待有り筆頭著者責任著者
    An understanding of the plasma physics inside a microwave discharge cathode is key to extending the lifetime of microwave ion thruster systems. However, probes can only measure the plume region due to their low spatial resolution and electromagnetic disturbance. In this study, we develop a microwave discharge-based cathode with a small optical window in the discharge chamber that provides visual access to the cathode interior. The cathode has the same anode currents as those of a flight model in the diode mode (anode voltage error is within 7%). Laser-induced fluorescence spectroscopy is applied to the cathode. The axial and radial ion velocity distribution functions (IVDFs) in the plume region and the axial IVDFs inside the cathode are measured. The measured functions, which represent the number density of Xe II (P-3(2))6p[3](5/2), are compared to a previously reported number density of Xe II measured by an electrostatic probe in the plume region. The functions exhibit multimodal characteristics. Theoretical models based on the measured current oscillation support these characteristics.
  • Masatoshi CHONO, Naoji YAMAMOTO, Ryudo TSUKIZAKI, Takato MORISHITA, Kenichi KUBOTA, Shinatra CHO, Kiyoshi KINEFUCHI, Toru TAKAHASHI
    TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES 64(3) 189-192 2021年  査読有り

MISC

 22

書籍等出版物

 2

講演・口頭発表等

 34

所属学協会

 2

共同研究・競争的資金等の研究課題

 3

社会貢献活動

 3

メディア報道

 5