Ryudo Tsukizaki

Profile Information

Affiliation: Associate Professor, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency

Degree: Ph(Mar, 2013, The University of Tokyo)

Researcher number: 70720697
ORCID iD: https://orcid.org/0000-0002-6265-1672
J-GLOBAL ID: 202001010789612597
researchmap Member ID: R000013995

Research Interests

Research Areas

Aerospace, marine, and maritime Engineering / Aerospace engineering / Electric Propulsion, Plasma, Microwave, Ion thruster, Laser spectroscopy

Research History

Nov, 2021 - Present

Associate Professor, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency
Aug, 2013 - Oct, 2021

Assistant Professor, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency
Sep, 2016 - Oct, 2017

Visiting scholar, University of California, Los Angeles
Apr, 2013 - Jul, 2013

Graduate School of Frontier Sciences, The University of Tokyo
Apr, 2010 - Mar, 2013

JSPS Research fellow DC1, The Graduate School of Engineering Department of Aeronautics and Astronautics, The University of Tokyo
May, 2010 - Aug, 2010

Research Assistant, NASA Goddard space flight center
Sep, 2008 - Jun, 2010

Hayabusa Project Research Assistant, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency

Education

Apr, 2010 - Mar, 2013

Department of Aeronautics and Astronautics, The Graduate School of Engineering, The University of Tokyo
Apr, 2008 - Mar, 2010

Department of Aeronautics and Astronautics, The Graduate School of Engineering, The University of Tokyo
Apr, 2004 - Mar, 2008

Department of Aeronautics and Astroronautics, The Faculty of Engineering, The University of Tokyo
Apr, 2000 - Mar, 2003

静岡県立静岡高校

Committee Memberships

Apr, 2023 - Present

電気推進部門委員, 日本航空宇宙学会
Apr, 2022 - Mar, 2024

論文編集委員, 日本航空宇宙学会
Apr, 2019 - Mar, 2020

delegate, THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES

Awards

May, 2024

船井学術賞, 公益財団法人船井情報科学技振興財団
Apr, 2021

文部科学大臣表彰若手科学者賞, 文部科学省
Dec, 2020

内閣総理大臣顕彰, 内閣総理大臣

はやぶさ2プロジェクトチーム
Sep, 2020

Trusted Reviewer, Institute of Physics
Feb, 2020

第8回技術経営・イノベーション大賞科学技術と経済の会会長賞, はやぶさ２による未踏天体探査の完遂と新たな探査技術の確立, 一般社団法人科学技術と経済の会

はやぶさ2プロジェクト
Apr, 2019

技術賞, 小天体ランデブーのための深宇宙航行技術の進展と小惑星Ryuguへの到着, 日本航空宇宙学会

はやぶさ2プロジェクト
Mar, 2019

The Aviation Week Network's Laureate Award for Space: Technology & Innovation, 小惑星リュウグウへの到着と小型ローバ・ランダ（MINERVA-II1の2機とMASCOT）の成功, Aviation Week Network

はやぶさ2プロジェクト
Dec, 2018

理事長賞, はやぶさ２探査機の小惑星リュウグウへの到達, 宇宙航空研究開発機構

はやぶさ2プロジェクト
Nov, 2017

エヌエフ基金研究開発奨励賞, マイクロ波プラズマ源の内部診断手法の確立とイオンエンジンへの適用, エヌエフ財団
Mar, 2013

育志賞, 日本学術振興会
Sep, 2012

平成 24 年度電気学会優秀論文発表 A 賞, マイクロ波放電式イオンスラスタのプラズマ診断, 日本電気学会
Apr, 2012

第 43 期年会優秀講演賞, マイクロ波放電式イオンエンジンμ10の推力増強と準安定中性粒子の空間密度分布, 日本航空学会
Mar, 2010

工学系研究科長賞(研究), マイクロ波放電式イオンスラスタにおける性能向上と光ファイバ探針による内部現象解明, 東京大学
2010

The AIAA 2010 Electric Propulsion Outstanding Technical Achievement Award, AIAA
Jul, 2009

Modi Memorial Jaya-Jayant Award, Enhancement of Thrust Force of the ECR Ion Thruster μ10, 27th International Symposium on Space Technology and Science

Papers

Simple model of multi-scale and multi-site emissions for porous ionic liquid electrospray thrusters

Koki Takagi, Yusuke Yamashita, Ryudo Tsukizaki, Kazutaka Nishiyama, Yoshinori Takao

Journal of Applied Physics, 135(24), Jun 27, 2024 Peer-reviewed
Effect of nozzle contamination on microwave discharge cathode performance

Takato Morishita, Ryudo Tsukizaki, Kazutaka Nishiyama

AIP Advances, 14(6), Jun 1, 2024 Peer-reviewed
Performance Enhancement of Microwave Discharge Cathode by External Gas Injection System

Soichiro Tsuji, Takato Morishita, Ayumu Nono, Ryudo Tsukizaki, Kazutaka Nishiyama

Acta Astronautica, May, 2024 Peer-reviewed
Measurements of electron velocity distribution function in microwave cathode plume by incoherent laser Thomson scattering

Takuya Koiso, Yusuke Yamashita, Ryudo Tsukizaki, Kazutaka Nishiyama

Vacuum, 220 112760-112760, Feb, 2024 Peer-reviewed
Effect of spacecraft surface conductivity on voltage of microwave neutralizer in gridded ion thrusters

Ayumu Nono, Takato Morishita, Satoshi Hosoda, Ryudo Tsukizaki, Kazutaka Nishiyama

Acta Astronautica, 212 130-138, Nov, 2023 Peer-reviewed
Performance characterization of the μ10 electron-cyclotron-resonance ion thruster using alternative propellants: Krypton vs. xenon

S. Barquero, K. Tabata, R. Tsukizaki, M. Merino, J. Navarro-Cavallé, K. Nishiyama

Acta Astronautica, Jul, 2023 Peer-reviewed
Thruster Performance Related to Plasma Mode-Transition and Plasma Hysteresis in Microwave Discharge Ion Thruster

Yusuke YAMASHITA, Takuya KOISO, Ryudo TSUKIZAKI, Kazutaka NISHIYAMA

Journal of Evolving Space Activities, 1 21, Jun, 2023 Peer-reviewed
Experimental Prediction of Performance Degradation During Space Operation in Microwave Discharge Ion Thruster µ10

Yusuke YAMASHITA, Kana HATTORI, Ryudo TSUKIZAKI, Satoshi HOSODA, Kazutaka NISHIYAMA

Journal of Evolving Space Activities, 1, Apr, 2023 Peer-reviewed
Samples returned from the asteroid Ryugu are similar to Ivuna-type carbonaceous meteorites.

Tetsuya Yokoyama, Kazuhide Nagashima, Izumi Nakai, Edward D Young, Yoshinari Abe, Jérôme Aléon, Conel M O'D Alexander, Sachiko Amari, Yuri Amelin, Ken-Ichi Bajo …

Science (New York, N.Y.), 379(6634) eabn7850, Feb 24, 2023 Peer-reviewed
Noble gases and nitrogen in samples of asteroid Ryugu record its volatile sources and recent surface evolution.

Ryuji Okazaki, Bernard Marty, Henner Busemann, Ko Hashizume, Jamie D Gilmour, Alex Meshik, Toru Yada, Fumio Kitajima, Michael W Broadley, David Byrne …

Science (New York, N.Y.), 379(6634) eabo0431, Feb 24, 2023 Peer-reviewed
Macromolecular organic matter in samples of the asteroid (162173) Ryugu.

Hikaru Yabuta, George D Cody, Cécile Engrand, Yoko Kebukawa, Bradley De Gregorio, Lydie Bonal, Laurent Remusat, Rhonda Stroud, Eric Quirico, Larry Nittler …

Science (New York, N.Y.), 379(6634) eabn9057, Feb 24, 2023 Peer-reviewed
Soluble organic molecules in samples of the carbonaceous asteroid (162173) Ryugu.

Hiroshi Naraoka, Yoshinori Takano, Jason P Dworkin, Yasuhiro Oba, Kenji Hamase, Aogu Furusho, Nanako O Ogawa, Minako Hashiguchi, Kazuhiko Fukushima, Dan Aoki …

Science (New York, N.Y.), 379(6634) eabn9033, Feb 24, 2023 Peer-reviewed
A dehydrated space-weathered skin cloaking the hydrated interior of Ryugu.

Takaaki Noguchi, Toru Matsumoto, Akira Miyake, Yohei Igami, Mitsutaka Haruta, Hikaru Saito, Satoshi Hata, Yusuke Seto, Masaaki Miyahara, Naotaka Tomioka …

Nature astronomy, 7(2) 170-181, 2023 Peer-reviewed
Importance of stepwise ionization from the metastable state in electron cyclotron resonance ion thrusters

Yusuke Yamashita, Ryudo Tsukizaki, Kazutaka Nishiyama

Journal of Electric Propulsion, 1(1), Dec, 2022 Peer-reviewedInvited
First asteroid gas sample delivered by the Hayabusa2 mission: A treasure box from Ryugu.

Ryuji Okazaki, Yayoi N Miura, Yoshinori Takano, Hirotaka Sawada, Kanako Sakamoto, Toru Yada, Keita Yamada, Shinsuke Kawagucci, Yohei Matsui, Ko Hashizume …

Science advances, 8(46) eabo7239, Nov 18, 2022 Peer-reviewed
A pristine record of outer Solar System materials from asteroid Ryugu's returned sample

Motoo Ito, Naotaka Tomioka, Masayuki Uesugi, Akira Yamaguchi, Naoki Shirai, Takuji Ohigashi, Ming-Chang Liu, Richard C. Greenwood, Makoto Kimura, Naoya Imae …

NATURE ASTRONOMY, 6(10) 1163-+, Oct, 2022 Peer-reviewed
Effect of ion beam extraction on neutral density distribution inside a gridded microwave discharge ion thruster

Yusuke Yamashita, Ryudo Tsukizaki, Kazutaka Nishiyama

Vacuum, 200 110962-110962, Jun, 2022 Peer-reviewed
Ion engine system of Hayabusa2

Satoshi Hosoda, Kazutaka Nishiyama, Ryudo Tsukizaki

Hayabusa2 Asteroid Sample Return Mission, 401-414, Apr, 2022 Peer-reviewed
Pebbles and sand on asteroid (162173) Ryugu: In situ observation and particles returned to Earth

S. Tachibana, H. Sawada, R. Okazaki, Y. Takano, K. Sakamoto, Y. N. Miura, C. Okamoto, H. Yano, S. Yamanouchi, P. Michel …

Science, 375(6584) 1011-1016, Mar 4, 2022 Peer-reviewed
Preliminary analysis of the Hayabusa2 samples returned from C-type asteroid Ryugu

Toru Yada, Masanao Abe, Tatsuaki Okada, Aiko Nakato, Kasumi Yogata, Akiko Miyazaki, Kentaro Hatakeda, Kazuya Kumagai, Masahiro Nishimura, Yuya Hitomi …

Nature Astronomy, 6(2) 214-220, Feb, 2022 Peer-reviewed

Misc.

110

Outer Solar System Exploration using Small Solar Power Sail

森治, 高尾勇輝, 松下将典, 杉原アフマッド清志, 宮崎康行, 佐藤泰貴, 奥泉信克, 久保勇貴, 尾崎直哉, 船瀬龍 …

宇宙科学技術連合講演会講演集(CD-ROM), 67th, 2023
Development of the Ion Engine System for DESTINY⁺

田畑邦佳, 月崎竜童, 今井駿, 森下貴都, 西山和孝

宇宙科学技術連合講演会講演集(CD-ROM), 67th, 2023
Effect of sputtering on current control of microwave neutralizer cathode on the deep space explorer HAYABUSA2

月崎竜童, 森下貴都, 今井駿, 田畑邦佳, 西山和孝

宇宙科学技術連合講演会講演集(CD-ROM), 67th, 2023
3Dプリンタ造形レジストジェットの高温電気接点設計—High-temperature electrical contact design for 3D-printed resistojet

中田, 大将, 杵淵, 紀世志, 蘇亜, 拉図, 岡田, 健太郎, HILLSTROM, Alexander, 酒井, 仁史, 月崎, 竜童, NAKATA, Daisuke, KINEFUCHI, Kiyoshi, SUYA, LATU …

令和4年度宇宙輸送シンポジウム: 講演集録 = Proceedings of Space Transportation Symposium FY2022, Jan, 2023
第36・37回国際電気推進会議(IEPC2019・2022)報告—Report on 36th International Electric Propulsion Conference (IEPC2019) and 37th International Electric Propulsion Conference (IEPC2022)

月崎竜童, 横田茂

日本航空宇宙学会誌 = Aeronautical and space sciences Japan, 70(10) 214-217, Oct, 2022
On the origin and evolution of the asteroid Ryugu: A comprehensive geochemical perspective

Eizo Nakamura, Katsura Kobayashi, Ryoji Tanaka, Tak Kunihiro, Hiroshi Kitagawa, Christian Potiszil, Tsutomu Ota, Chie Sakaguchi, Masahiro Yamanaka, Dilan M. Ratnayake …

PROCEEDINGS OF THE JAPAN ACADEMY SERIES B-PHYSICAL AND BIOLOGICAL SCIENCES, 98(6) 227-282, Jun, 2022
Full-kinetic particle simulation for plasma thruster

2021 63-67, Mar, 2022
1kW級ホールスラスタの推進性能に対する陰極種類と位置の影響—Effects of Cathode Type and Position on Thrust Performance of 1-kW Class Hall Thruster

渡邊, 裕樹, 張, 科寅, 松永, 芳樹, 月崎, 竜童, WATANABE, Hiroki, CHO, Shinatora, MATSUNAGA, Yoshiki, TSUKIZAKI, Ryudo

令和3年度宇宙科学に関する室内実験シンポジウム講演集 = Proceedings of 2022 Symposium on Laboratory Experiment for Space Science, Feb, 2022
In-Situ Resource Utilization for Electric Propulsion and Application of Hydrogen and Dry Ice as Propellant

杵淵紀世志, 張科寅, 渡邊裕樹, 月崎竜童, 中田大将

宇宙科学技術連合講演会講演集(CD-ROM), 66th, 2022
Development of the Ion Engine System for DESTINY⁺

西山和孝, 月崎竜童, 今井駿, 田畑邦佳, 森下貴都

宇宙科学技術連合講演会講演集(CD-ROM), 66th, 2022
レーザ誘起蛍光法による可視化マイクロ波放電式中和器の内部プラズマ及びプルーム計測—Internal and External Plasma Parameter Measurements of Visualizable Microwave Discharge Cathode by Laser-Induced Fluorescence Spectroscopy

森下, 貴都, 月崎, 竜童, 西山, 和孝, 國中, 均, MORISHITA, Takato, TSUKIZAKI, Ryudo, NISHIYAMA, Kazutaka, KUNINAKA, Hitoshi

令和3年度宇宙輸送シンポジウム: 講演集録 = Proceedings of Space Transportation Symposium FY2021, Jan, 2022
マイクロ波放電型イオンスラスタのプラズマモード遷移に関する研究—Plasma Mode Transition of Microwave Discharge Ion Thruster

山下, 裕介, 月崎, 竜童, 西山, 和孝, YAMASHITA, Yusuke, TSUKIZAKI, Ryudo, NISHIYAMA, Kazutaka

令和3年度宇宙輸送シンポジウム: 講演集録 = Proceedings of Space Transportation Symposium FY2021, Jan, 2022
Hayabusa2's Return to Earth and a New Departure by Microwave Discharge Ion Engines

Kazutaka Nishiyama, Satoshi Hosoda, Ryudo Tsukizaki, Shun Imai, Makoto Yoshikawa, Yuichi Tsuda

Proceedings of the International Astronautical Congress, IAC, C4, 2021
Development of the Ion Engine System for DESTINY⁺

西山和孝, 細田聡史, 月崎竜童, 今井駿

宇宙科学技術連合講演会講演集(CD-ROM), 65th, 2021
Operational Results of Ion Engine System for the Asteroid Explorer Hayabusa2

西山和孝, 細田聡史, 月崎竜童, 今井駿

宇宙科学技術連合講演会講演集(CD-ROM), 65th, 2021
Study on Low-Power Hall Thrusters for Space Explorations

渡邊裕樹, 和田明哲, 月崎竜童, 池田知行

宇宙航空研究開発機構研究開発報告 JAXA-RR-(Web), (20-008), 2021
R&D status of JAXA 1-kW Hall Thruster System for Active Debris Removal

張科寅, 渡邊裕樹, 松永芳樹, 月崎竜童, 大川恭志, 近藤大将, 艸分宏昌, 山元透

宇宙航空研究開発機構特別資料 JAXA-SP-(Web), (21-001), 2021
Asteroid Sample Return mission HAYABUSA2 from Asteroid “Ryugu”

月崎竜童

静電気学会講演論文集, 2021, 2021
Ion velocity measurement of microwave cathode plume by laser-induced fluorescence spectroscopy

MORISHITA Takato, TSUKIZAKI Ryudo, NISHIYAMA Kazutaka, KUNINAKA Hitoshi

Jan, 2021
Study on Coupling Operation of Microwave Discharge Neutralizer

NONO Ayumu, MORISHITA Takato, HOSODA Satoshi, TSUKIZAKI Ryudo, NISHIYAMA Kazutaka

Jan, 2021

Books and Other Publications

Hayabusa2 asteroid sample return mission : technological innovations and advances

Hirabayashi, Masatoshi, Tsuda, Yuichi

Elsevier, 2022 (ISBN: 9780323997317)
Ion engine system of Hayabusa2

Satoshi Hosoda, Kazutaka Nishiyama, Ryudo Tsukizaki

Elsevier, 2022
Sensitivity degradation of optical navigation camera and attempts for dust removal

Naoko Ogawa, Yasuhiro Yokota, Koki Yumoto, Eri Tatsumi, Toru Kouyama, Tomokatsu Morota, Manabu Yamada, Satoshi Hosoda, Ryudo Tsukizaki, Kazutaka Nishiyama, Rie Honda, Seiji Sugita, Fuyuto Terui, Yuya Mimasu, Kent Yoshikawa, Go Ono, Yuto Takei, Takanao Saiki, Yuichi Tsuda

Elsevier, 2022

Teaching Experience

Dec, 2022 - Jan, 2023

Advanced Energy Conversion (Graduate School of Frontier Sciences, The University of Tokyo)
Sep, 2021 - Feb, 2022

Propulsion and Energy Systems (Graduate School of Frontier Sciences The University of Tokyo)
Sep, 2021 - Nov, 2021

Propulsion and Energy Systems (The University of Tokyo)
Sep, 2013 - Mar, 2016

Earth and Astronomical Science (Komazawa Women's University)

Professional Memberships

Jul, 2011 - Present

American Institute of Aeronautics and Astronautics
Sep, 2009 - Present

Electric Rocket Propulsion Society
Apr, 2008 - Present

THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES

Research Projects

磁化イオン－中性粒子連成スワール加速の創成と液体水素プラズマ宇宙推進への展開

科学研究費助成事業, 基盤研究(A), 日本学術振興会, Apr, 2023 - Mar, 2027

杵淵紀世志, 窪田健一, 小林弘明, 土屋雄司, 月崎竜童
Research on ion acceleration mechanism in microwave plasma

Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), Japan Society for the Promotion of Science, Apr, 2023 - Mar, 2027
Acceleration Mechanism of Xenon Ion in Electric Propulsion Thrusters

Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (A), Grant-in-Aid for Young Scientists (A), Japan Society for the Promotion of Science, Apr, 2017 - Mar, 2021

Tsukizaki Ryudo
Azimuthal velocity measurements of ion thruster by laser-induced fluorescence spectroscopy

Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B), Grant-in-Aid for Young Scientists (B), Japan Society for the Promotion of Science, Apr, 2014 - Mar, 2017

Tsukizaki, Ryudo
Development of Global Remote Sensing for Neutral Particles in Upper Atmosphere

Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A), Grant-in-Aid for Scientific Research (A), Japan Society for the Promotion of Science, Apr, 2010 - Mar, 2015

KUNINKA Hitoshi, KOIZUMI Hiroyuki, NISHIYAMA Kazutak, HOSODA Satoshi, TSUKIZAKI Ryudo
2次元速度分布計測によるプラズマ推進機の加速機構の解明

科学研究費助成事業特別研究員奨励費, 特別研究員奨励費, 日本学術振興会, 2013 - 2013

月崎竜童
マイクロ波放電式イオンエンジンのプラズマ診断

科学研究費助成事業特別研究員奨励費, 特別研究員奨励費, 日本学術振興会, 2010 - 2012

月崎竜童

Industrial Property Rights

特願2021-016380 ータ一体型カソードチューブおよびホローカソード

張科寅, 月崎竜童, ほか
特願2020-120787 ガス供給システムおよび推進システム

月崎竜童

Academic Activities

IOP Trusted Reviewer

Peer review

Institute of Physics, Sep, 2020 - Present

Media Coverage

The Hidden Story

J-WAVE, JK Radio Tokyo United, https://www.j-wave.co.jp/original/tokyounited/archives/the-hidden-story/2021/02/19-111253.html, Feb, 2021 TV or radio program

Profile Information

Research Interests

Research Areas

Research History

Education

Committee Memberships

Awards

Papers

Misc.

Books and Other Publications

Teaching Experience

Professional Memberships

Research Projects

Industrial Property Rights

Academic Activities

Media Coverage

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