主な国際会議発表（抜粋）

Effect of Structured Surface on Pressure Measurement in Hypersonic Rarefied Wind Tunnel
Ryunosuke Endo, Masahito Tagawa, Kumiko Yokota, Takashi Ozawa
33rd International Symposium on Rarefied Gas Dynamics, July 15-19 (2024), Göttingen, Germany
DSMC Computations of Intake Performance for Air Breathing Ion Engine
Takashi Ozawa, Shunsuke Imamura, Masahito Tagawa, Kumiko Yokota
33rd International Symposium on Rarefied Gas Dynamics, July 15-19 (2024), Göttingen, Germany
Degradation of fluorinated polymers/lubricants due to hyperthermal nitrogen collision in very low earth
orbit
Kumiko Yokota, Kaichi Nakayama, Santa Nishioka, Kazuki Ueta, Masahito Tagawa
49th Leeds-Lyon Symposium on Tribology, September 2-4 (2024), Lyon, France
Evaluation of atomic oxygen effects obtained onboard SLATS/MDM
Yugo Kimoto, Aki Goto, Kazuki Yukumatsu, Eiji Miyazaki, Kumiko Yokota, Masahito Tagawa
ISMSE16/ICPMSE14, October 7-11 (2024), Saint-Raphaël, France
Individual erosion yields of FEP by atomic oxygen and by argon in simulated VLEO environments
Masahito Tagawa, Santa Nishioka, Kaichi Nakayama, Kazuki Ueta, Kumiko Yokota
ISMSE16/ICPMSE14, October 7-11 (2024), Saint-Raphaël, France
Real-time Observation of Polyimide Erosion in Very Low Earth Orbit (VLEO) and Its Impact on Space
Environmental Effect on Materials
Masahito Tagawa, Kumiko Yokota, Atsushi Fujita, Wataru Ide, Towa Ushijima, Koki Yao, Sasuga Horimoto,Santa Nishioka, Kaichi Nakayama, Yuta Tsuchiya, Aki Goto, Kazuki Yukumatsu, Eiji Miyazaki, Yugo Kimoto
2023 MRS Spring Meeting & Exhibit, San Francisco, April 10-14, 2023 (Invited)
Atomic-oxygen-induced Microstructures Formed on Hydrocarbon Polymer Films
Aki Goto, Takashi Tanji, Masahito Tagawa, Koji Michishio, Toshitaka Oka, Shinichi Yamashita
2023 MRS Spring Meeting & Exhibit, San Francisco, April 10-14, 2023
Ground-based simulation experiment on degradation of spacecraft polymeric materials in VLEO
Santa Nishioka, Sasuga Horimoto, Kaichi Nakayama, Kumiko Yokota, Masahito Tagawa, Zelina Iskanderova,
Jacob Kleiman
34th International Symposium on Space Technology and Science, June 3-9, 2023, Kurume, Fukuoka
Ground-based experiment for simultaneous N2 collisions effect on atomic oxygen-induced polyimide erosionin very-low Earth orbit.
Kaichi Nakayama, Sasuga Horimoto, Atsushi Fujita, Shohei Urakawa, Santa Nishioka, Wataru Ide, Kumiko
Yokota, and Masahito Tagawa
34th International Symposium on Space Technology and Science, June 3-9, 2023, Kurume, Fukuoka
High compression intake system for air breathing ion engine using anisotropic molecular scattering
property of intake surfaces
Koki Sugimoto, Kosuke Shoda, Kazuki Itatani, Keisuke Ezaki, Yusaku Ashida, Koki Murata, Kumiko Yokota,
Masahito Tagawa, Yusuke Yamashita, Kazutaka Nishiyama
34th International Symposium on Space Technology and Science, June 3-9, 2023, Kurume, Fukuoka
A high compression intake system for air breathing ion engine
Koki Murata, Keisuke Ezaki, Kosuke Shoda, Kazuki Itatani, Yusaku Ashida, Koki Sugimoto, Yusuke Yamashita,
Kazutaka NIshiyama, Kumiko Yokota, Masahito Tagawa
34th International Symposium on Space Technology and Science, June 3-9, 2023, Kurume, Fukuoka
Atmospheric density measurement by dynamic pressure gauge aboard S-520-32 sounding rocket
Taiga Adachi, Shoma Taira, Rintaro Atsuta, Yusuke Yamashita, Takashi Ozawa, Yoshinori Nakayama, Nanami
Tobita, Takumi Abe, Kumiko Yokota, Masahito Tagawa
34th International Symposium on Space Technology and Science, June 3-9, 2023, Kurume, Fukuoka
A design of pressure gauge for sounding rocket experimentRintaro Atsuta, Shoma Taira, Taiga Adachi, Yusuke Yamashita, Takashi Ozawa, Takumi Abe, Yoshinori
Nakayama, Nanami Tobita, Kumiko Yokota, Masahito Tagawa
34th International Symposium on Space Technology and Science, June 3-9, 2023, Kurume, Fukuoka

Atomic oxygen density variation in VLEO region: SLATS/AOFS flight data analysis
Towa Ushijima, Atsushi Fujita, Koki Yao, Yuta Tsuchiya, Aki Goto, Kazuki Yukumatsu, Eiji Miyazaki, Yugo
Kimoto, Yasunobu Miyoshi, Kumiko Yokota, Masahito Tagawa
34th International Symposium on Space Technology and Science, June 3-9, 2023, Kurume, Fukuoka
Evaluation of the structural shielding/shadowing effect of atomic oxygen from SLATS flight data
Koki Yao, Towa Ushijima, Atsushi Fujita, Yuta Tsuchiya, Aki Goto, Kazuki Yukumatsu, Eiji Miyazaki, Yugo
Kimoto, Yusuke Yamashita, Kumiko Yokota, Masahito Tagawa
34th International Symposium on Space Technology and Science, June 3-9, 2023, Kurume, Fukuoka
Effect on atomic oxygen-induced surface erosion of polyimide on atmospheric drag of satellite in very low
Earth orbit
Yusaku Ashida, Kazuki Itatani, Kosuke Shoda, Keisuke Ezaki, Koki Sugimoto, Takashi Ozawa, Yusuke
Yamashita, Nozomu Kogiso, Hiroaki Tanaka, Kumiko Yokota, Masahito Tagawa
34th International Symposium on Space Technology and Science, June 3-9, 2023, Kurume, Fukuoka
Passive compression device in molecular flow by surface scattering: A key device for spacecraft intake
systemMasahito Tagawa, Yusaku Ashida Koki Sugimoto, Kosuke Shoda, Keisuke Ezaki, Kumiko Yokota, Takashi
Ozawa, Yusuke Yamashita, Kazutaka Nishiyama
The 5th International Workshop on Scattering of Atoms and Molecules from Surfaces, 12th - 15th September 2022,
Gonville and Caius College, Cambridge, UK
Atomic oxygen density variation measured by SLATS/AOFS: Comparison of flight data and atmosphericmodel predictions
Masahito Tagawa, Kumiko Yokota, Atsushi Fujita, Wataru Ide, Yasunobu Miyoshi, Yuta Tsuchiya, Aki Goto,
Kazuki Yukumatsu, Eiji Miyazaki, Yugo Kimoto
Proceedings of the 15th International Symposium on Materials in a Space Environment / 13 th International
Conference on Protection of Materials and Systems from Space Environment, Leiden, Netherlands, September 1823, 2022.
Shielding effect of atomic oxygen by satellite structure observed on SLATS and its compensation formaterial exposure experiment
Masahito Tagawa, Kumiko Yokota, Wataru Ide, Atsushi Fujita, Shohei Urakawa, Yuta Tsuchiya, Aki Goto,
Kazuki Yukumatsu, Eiji Miyazaki, Yugo Kimoto
Proceedings of the 15th International Symposium on Materials in a Space Environment / 13 th International
Conference on Protection of Materials and Systems from Space Environment, Leiden, Netherlands, September 1823, 2022.
N2-acceleration effect on atomic oxygen-induced polyimide erosion in sub-LEO observed by SLATS/AOFS
Kumiko Yokota, Masahito Tagawa, Wataru Ide, Atsushi Fujita, Sasuga Horimoto, Santa Nishioka, Keisuke Ezaki,
Yuta Tsuchiya, Aki Goto, Kazuki Yukumatsu, Eiji Miyazaki, Yugo Kimoto
Proceedings of the 15th International Symposium on Materials in a Space Environment / 13th International
Conference on Protection of Materials and Systems from Space Environment, Leiden, Netherlands, September 1823, 2022.
Impact of neutral atmosphere environment on SLATS
Yugo Kimoto, Yuta Tsuchiya, Eiji Miyazaki, Aki Goto, Kazuki Yukumatsu, Shunsuke Imamura, Haruo Kawasaki,
Masanori Sasaki, Kumiko Yokota, Masahito Tagawa, Wataru Ide, Atsushi Fujita, Shohei Urakawa, Sasuga
Horimoto, Santa Nishioka
Proceedings of the 15th International Symposium on Materials in a Space Environment / 13th International
Conference on Protection of Materials and Systems from Space Environment, Leiden, Netherlands, September 1823, 2022.
Trial experiment of mass gain behavior on pristine Kapton film after heating in vacuum
Eijo Fujiwara, Minoru Iwata, Masahito Tagawa, Sumitaka Tachikawa
Proceedings of the 15th International Symposium on Materials in a Space Environment / 13 th International
Conference on Protection of Materials and Systems from Space Environment, Leiden, Netherlands, September 1823, 2022.
Space polymers erosion in simulated LEO and VLEO environments
Zilina Iskanderova, Jacob Kleiman, Masahito Tagawa, Santa Nishioka, Sasuga Horimoto
Proceedings of the 15th International Symposium on Materials in a Space Environment / 13th International
Conference on Protection of Materials and Systems from Space Environment, Leiden, Netherlands, September 1823, 2022.

Perspective on Atomic Oxygen Reaction with Thermal Control Materials in Space
Masahito Tagawa, Kumiko Yokota (Keynote Lecture)
The 13th Asian Thermophysical Properties Conference, September 26-30, 2022, Sendai, Japan
Performance change of field emission cathode by atomic oxygen irradiation
Keisuke Ezaki, Kazuki Itatani, Yuki Fukami, Yusaku Ashida, Yasushi Ohkawa, Satomi Kawamoto, Kumiko
Yokota, Masahito Tagawa
The 13th Asian Thermophysical Properties Conference, September 26-30, 2022, Sendai, Japan
A research on material degradation of spacecraft in sub-low Earth orbit environment -An estimate of thecontribution of inert molecule’s energy to the acceleration effect of the erosion of polyimide Sasuga Horimoto, Santa Nishioka, Wataru Ide, Kumiko Yokota, Masahito Tagawa
The 13th Asian Thermophysical Properties Conference, September 26-30, 2022, Sendai, Japan
Development of atmospheric density measurement system for the experiment by sounding rocket S-520-32
Shoma Taira, Taishi Kato, Momoka Shimoi, Taiga Adachi, Yusuke Yamashita, Takashi Ozawa, Takumi Abe,
Yoshinori Nakayama, Kumiko Yokota, Masahito Tagawa
The 13th Asian Thermophysical Properties Conference, September 26-30, 2022, Sendai, Japan
Surface erosion of carbon-based materials in VLEO space environment: Collision-induced desorption byatmospheric N2 associated with oxidation by O
Kumiko Yokota, Sasuga Horimoto, Wataru Ide, Santa Nishioka, Masahito Tagawa
The 14th International Symposium on Atomic Level Characterization of New Materials and Devices ‘22
October 16- 21, 2022, Okinawa, Japan
Scattering behavior of atoms at polymer surface exposed to ISS space environment
Masahito Tagawa, Keisuke Ezaki, Kosuke Shoda, Yusaku Ashida, Koki Sugimoto, Kumiko Yokota, Nozomu
Kogiso, Hiroaki Tanaka
The 14th International Symposium on Atomic Level Characterization of New Materials and Devices ‘22
October 16- 21, 2022, Okinawa, Japan
Accelerated AO-induced polyimide erosion in VLEO by simultaneous collisions of hyperthermal N 2
molecules
Sasuga Horimoto, Atsushi Fujita, Wataru Ide, Kumiko Yokota, Masahito Tagawa
1st International Symposium on VLEO Missions and Technologies, Manchester, UK, June 28-29, 2021
Atmospheric density probe for VLEO applications
Taishi Kato, Shoma Taira, Momoka Shimoi, Kumiko Yokota, Yoshinori Nakayama, Takashi Ozawa, Masahito
Tagawa
1st International Symposium on VLEO Missions and Technologies, Manchester, UK, June 28-29, 2021
Molecular scattering at microstructured surface for rarefied gas compression inside air breathing ion
engineKosuke Shoda, Naoki Kano, Yuki Jotaki, Keisuke Ezaki, Kazuki Itatani, Takashi Ozawa, Yusuke Yamashita,
Kazutaka Nishiyama, Kumiko Yokota, Masahito Tagawa
1st International Symposium on VLEO Missions and Technologies, Manchester, UK, June 28-29, 2021
VLEO-related research activities at Kobe University
Masahito Tagawa, Wataru Ide, Naoki Kano, Momoka Shimoi, Yuki Fukami, Kosuke Shoda, Taishi Kato, Kazuki
Itatani, Atsushi Fujita, Sasuga Horimoto, Keisuke Ezaki, Shoma Taira, Yuki Jotaki, Kumiko Yokota
1st International Symposium on VLEO Missions and Technologies, Manchester, UK, June 28-29, 2021
AO density variations during geomagnetic anomaly observed by SLATSAtsushi Fujita, Kumiko Yokota, Masahito Tagawa, Wataru Ide, Sasuga Horimoto, Yugo Kimoto, Yuta Tsuchiya,
Aki Goto, Kazuki Yukumatsu, Eiji Miyazaki, Yasunobu Miyoshi
2nd Applied Space Environments Conference, November 1-5, 2021, Online
Effect of direct atomic oxygen exposures on carbon nanotube field emission cathode: comparison of flightdata and in-situ ground-based experiment
Kazuki Itatani, Keisuke Ezaki, Fukami Yuki, Kumiko Yokota, Masahito Tagawa, Yasushi Ohkawa, Satomi
Kawamoto
2nd Applied Space Environments Conference, November 1-5, 2021, Online
Microstructure Formation on Polymers Induced by Atomic Oxygen: Higher-order Structure Effects on
Morphologies
Aki Goto, Takashi Tanji, Masahito Tagawa, Koji Michishio, Toshitaka Oka, Shinichi Yamashita

The Miller Online Workshop on Radiation Chemistry, 10-12 February 2022, Online
Scattering behavior of thermal molecular beams at microstructured surface for high compression intake
system of air breathing ion engine
Keisuke Ezaki, Kosuke Shoda, Kazuki Itatani, Yuki Jotaki, Yuki Jotaki, Yusaku Ashida, Koki Sugimoto, Takashi
Ozawa, Yusuke Yamashita, Kazutaka Nishiyama, Kumiko Yokota, Masahito Tagawa
Proceedings of the 33rd International Symposium on Space Technology and Science, Beppu, Oita, February 26 –March 4, 2022
Development of atmospheric density probe aboard S-520-32 sounding rocket
Shoma Taira, Taishi Kato, Momoka Shimoi, Taiga Adachi, Towa Ushijima, Yusuke Yamashita, Takashi Ozawa,
Takumi Abe, Yoshinori Nakayama, Kumiko Yokota, Masahito Tagawa
Proceedings of the 33rd International Symposium on Space Technology and Science, Beppu, Oita, February 26 –March 4, 2022
Ground-based experiment for simultaneous N2 collision effect on atomic oxygen-induced polyimide erosion
in sub-low Earth orbit
Sasuga Horimoto, Atsushi Fujita, Shohei Urakawa, Santa Nishioka, Wataru Ide, Kumiko Yokota, Masahito
TagawaProceedings of the 33rd International Symposium on Space Technology and Science, Beppu, Oita, February 26 –March 4, 2022
Result of Exposure Experiment of Piezoelectric Actuators Using ExHAM
Nozomu Kogiso, Hiroaki Tanaka, Tadashige Ikeda, Kosei Ishimura, Masato Tagawa, Minoru Iwata, Motoharu
FujigakiProceedings of the 33rd International Symposium on Space Technology and Science, Beppu, Oita, February 26 –March 4, 2022
Fluence estimation of ionizing radiation in space environments for material degradation
Minoru Iwata, Masahito Tagawa, Sumitaka Tachikawa
Proceedings of the 33rd International Symposium on Space Technology and Science, Beppu, Oita, February 26 –March 4, 2022

Atomic Oxygen Exposure Test Capabilities at Kobe University: Its Performance and Limitations
Kumiko Yokota, Masahito Tagawa, Jacob I. Kleiman
Advanced Space Environmental Conference, Universal City USA, May 13-17, 2019
Reduced Dissociation of Molecules in Laser-Detonation-Driven Hyperthermal Beams
Masahito Tagawa, Ryota Okura, Kumiko Yokota
Advanced Space Environmental Conference, Universal City USA, May 13-17, 2019
Kapton erosion yields in various flight environments
Wataru Ide, Yusuke Fujimoto, Kim K. de Groh, Bruce A. Banks, Yuta Tsuchiya, Kazuki Yukumatsu,
Aki Goto, Eiji Miyazaki Yugo Kimoto, Kumiko Yokota, Masahito Tagawa
Joint Symposium of 32nd International Symposium on Space Technology and Science and 9th NanoSatellites Symposium, Fukui, June 15-21, 2019
Direct simulation Monte Carlo evaluation of hyperthermal molecular flow in air breathing ion
engineNaoki Kano, Ryo Shirakawa, Momoka Shimoi, Takashi Ozawa, Kazutaka Nishiyama, Kumiko Yokota,
Masahito Tagawa
Joint Symposium of 32nd International Symposium on Space Technology and Science and 9th NanoSatellites Symposium, Fukui, June 15-21, 2019
Development of ionization gauge for in-orbit measurement of molecular density
Momoka Shimoi, Ryota Okura, Ryo Shirakawa, Naoki kano, Shunsuke Imamura, Takashi Ozawa,
Kumiko Yokota, Masahito Tagawa
Joint Symposium of 32nd International Symposium on Space Technology and Science and 9th NanoSatellites Symposium, Fukui, June 15-21, 2019
Particle simulations of ECR plasma generation in air breathing ion engine
Ryo Shirakawa, Hideyuki Usui, Yohei Miyake, Masahito Tagawa, Kazutaka Nishiyama
Joint Symposium of 32nd International Symposium on Space Technology and Science and 9th NanoSatellites Symposium, Fukui, June 15-21, 2019

Study of rarefied aerodynamics for super low altitude satellites
Takashi Ozawa, Shunsuke Imamura, Masahito Tagawa, Kazuhisa Fujita
Joint Symposium of 32nd International Symposium on Space Technology and Science and 9th NanoSatellites Symposium, Fukui, June 15-21, 2019
Effect of collision energy on oxidation of Si atoms embedded in polyimide by simulated low Earthorbit space environment
K. Yokota, R. Shirakawa, M. Shimoi, W. Ide, N. Kano, M. Tagawa
18th European Conference on Applications of Surface and Interface Analysis, Dresden Germany,
September 15-20 2019
Collision-induced erosion on polyimide in simulated low Earth orbit space environment
M. Tagawa, R. Shirakawa, M. Shimoi, W. Ide, N. Kano, K. Yokota
18th European Conference on Applications of Surface and Interface Analysis, Dresden Germany,
September 15-20 2019
Importance of atom-surface scattering on the design criteria of future air breathing ion engine
M. Tagawa, K. Yokota, R. Shirakawa, N. Kano, M. Shimoi, F. Ezuka, K. Matsuoka, S. Imamura, K.
Nishiyama, T. Ozawa
23rd International Workshop on Inelastic Ion-Surface Collisions (IISC-23), Matsue, Japan, 17 – 22November 2019
Hyperthermal collision-induced erosion of spacecraft polymeric materials in low Earth orbit
Yokota, R. Shirakawa, W. Ide, Y. Fukami, M. Tagawa
23rd International Workshop on Inelastic Ion-Surface Collisions (IISC-23), Matsue, Japan, 17 – 22November 2019
A consideration of degradation of polymeric materials in sub-low Earth orbits space environment
Yusuke Fujimoto, Ryota Okura, Kazuki Kita, Minoru Iwata, Kumiko Yokota, Masahito Tagawa
15th Spacecraft Charging Technology Conference, Kobe, Japan, May 25-29, 2018
Development of a pulsed supersonic valve aimed for Martian atmospheric simulation
Ryota Okura, Yusuke Fujimoto, Kazuki Kita, Minoru Iwata, Chee Sze Keat, Yugo Kimoto, Kumiko Yokota,
Masahito Tagawa
15th Spacecraft Charging Technology Conference, Kobe, Japan, May 25-29 2018
Plasma particle simulation of ECR plasma generation in Air Breathing Ion Engine (ABIE)
Ryo Shirakawa, Hideyuki Usui, Yohei Miyake, Masahito Tagawa, Kazutaka Nishiyama
15th Spacecraft Charging Technology Conference, Kobe, Japan, May 25-29, 2018
One-nozzle two-beam laser-detonation system
Kumiko Yokota, Kazuki Kita, Ryota Okura, Teppei Shimizu, Sze Keat Chee, Minoru Iwata, Masahito Tagawa
14th International Symposium on Materials in the Space Environment/12th International Conference on protectionof Materials and Structures in a Space Environment, October 1-5 2018, Biarritz, France.
Over-estimation of atomic oxygen fluences due to undecomposed oxygen molecules included in
hyperthermal beams
Masahito Tagawa, Kazuki Kita, Ryota Okura, Yusuke Fujimoto, Ryo Shirakawa, Teppei Shimizu, Minoru Iwata,
Kumiko Yokota,
14th International Symposium on Materials in the Space Environment/12th International Conference on protectionof Materials and Structures in a Space Environment, October 1-5 2018, Biarritz, France.

Enhancement of atomic oxygen resistance of charge dissipative ion beam treated polymers
Z. Iskanderova, J. Kleiman, F. Bussieres, M. Tagawa, R. Ng, R. Sodhi
14th International Symposium on Materials in the Space Environment/12th International Conference on protectionof Materials and Structures in a Space Environment, October 1-5 2018, Biarritz, France.
Cultivation of research and project-support network for degradation of space-use materials -Concept ofcluster type in-situ test facilities systemMinoru Iwata, Masahito Tagawa, Sumitaka Tachikawa, Issei Kato, Takayuki Hirose
14th International Symposium on Materials in the Space Environment/12th International Conference on protectionof Materials and Structures in a Space Environment, October 1-5 2018, Biarritz, France.

Evaluation of vacuum transfer vessel performance to construct cluster type in-situ test facilities network
Alexandre Simon, Minoru Iwata, Masahito Tagawa, Sumitaka Tachikawa
14th International Symposium on Materials in the Space Environment/12th International Conference on protectionof Materials and Structures in a Space Environment, October 1-5 2018, Biarritz, France.

A pulsed supersonic valve aimed for Martian atmospheric simulation
Ryota Okura, Minoru Iwata, Chee Sze Keat, Kumiko Yokota, Masahito Tagawa,31st International Symposium on Space Technology and Science,
June 3-9, 2017, Matsuyama, Japan
Mass-loss of FEP/Ag films in sub-low Earth orbit space environment
Yusuke Fujimoto, Kazuki Kita, Yasuko Koshiba, Kenji Ishida, Minoru Iwata, Kumiko Yokota,
Masahito Tagawa,31st International Symposium on Space Technology and Science,
June 3-9, 2017, Matsuyama, Japan
Accelerating effect of atomic oxygen-induced polyimide degradation due to simultaneous collisionof chemically inert molecules
Kazuki Kita, Yusuke Fujimoto, Yuki Yamasaki, Minoru Iwata, Kumiko Yokota, Masahito Tagawa,31st International Symposium on Space Technology and Science,
June 3-9, 2017, Matsuyama, JapanA consideration on surface corrosion mechanism of fluoroethylenepropylene (FEP) films in sublow earth orbit (LEO) environment
Kumiko Yokota, Yusuke Fujimoto, Ryota Okura, Kazuki Kita, Masahito Tagawa,33rd European Conference on Surface Science,
August 27-September 1, 2017, Szeged, Hungary.
Collision-induced enhancement of polyimide corrosion in sub-low Earth orbit (LEO) spaceenvironment
Masahito Tagawa, Ryota Okura, Yusuke Fujimoto, Kazuki Kita, Kumiko Yokota,
33rd European Conference on Surface Science,
August 27-September 1, 2017, Szeged, Hungary.
Molecular beam source for degradation studies of polyimide-based thermal blanket in very low
altitude space environment
Kumiko Yokota, Ryota Okura, Chee Sze Keat, Masahito Tagawa,21st European Thermophysical Properties Conference,
September 3-8, 2017, Graz, Austria.
A consideration on degradation of FEP-based radiator equipped to low altitude spacecraft
Masahito Tagawa, Yusuke Fujimoto, Kazuki Kita, Kumiko Yokota,
European 21st Thermophysical Properties Conference,
September 3-8, 2017, Graz, Austria.
A fast piezoelectric-driven pulsed supersonic valve using displacement enlargement mechanism
for molecular beam applications
Masahito Tagawa, Kumiko Yokota, Chee Sze Keat,
16th Joint Vacuum Conference, 14th European Vacuum Conference,
June 6-10, 2016, Portoroz, Slovenia.
Extreme ultraviolet emission from laser-induced plasma relevance to neutral gas environment
simulation in low Earth orbit
Kumiko Yokota, Masahito Tagawa,16th Joint Vacuum Conference, 14th European Vacuum Conference,
June 6-10, 2016, Portoroz, Slovenia.
Atomic oxygen-induced erosion property of polyimide-based multilayer insulation in very low
altitudes,

Kumiko Yokota, Yuki Yamasaki, Kazuki Kita, Masahito Tagawa,11th Asia Thermophysical Properties Conference,
October 2-6, 2016, Yokohama, Japan.
A pulsed supersonic valve system for researches on collision-induced reactive thin film etching
phenomena
Masahito Tagawa, Kumiko Yokota, Tsubasa Yasukochi, Chee Sze Keat,
Pacific Rim Symposium on Surfaces, Coatings and Interfaces,
December 11-15, 2016, Kohala Coast, HI.
Extreme ultraviolet emission from laser-induced O2+Ar plasmas relevance to ground-based
simulation of thin film etching reactions in low Earth orbit
Masahito Tagawa, Takashi Ohyabu, Junki Ohira, Kaoru Morimoto, Kumiko Yokota,
Pacific Rim Symposium on Surfaces, Coatings and Interfaces,
December 11-15, 2016, Kohala Coast, HI.
Acceleration of Solid Particle Using GXII Laser System
Yukihito Kitazawa, Yoichiro Hironaka, Jyunki Ohira, Takayoshi Sano ,Keisuke Shigemori, Masahito
Tagawa, Haruhisa Matsumoto, 1st Workshop on Laser solutions for Orbital Space Debris, April 27-28,
2015, Paris, France
Effect of high-energy inert gas collisions on the atomic oxygen-induced polymer erosion
Masahito Tagawa, Kenta Ide, Yuki Yamasaki, Daiki Watanabe, Kumiko Yokota, 13th International
Symposium on Materials in the Space Environment, June 22-26, 2015, Pau, France.