主な原著論文（抜粋）High-speed atomic oxygen irradiation to atomically thin graphene for astronomical applications
Kazuto Kashiwakura, Ikuyuki Mitsuishia, Midori Hirota, Yoshimi Niwaa, Yuzuru, Tawara, Ryo Kitaura, Haruka
Omachi, Masahito Tagawa, Kentaro Nomoto, Kazuyuki Tsuruoka, Kenji Kawahara, Hiroki Ago
Journal of Astronomical Telescopes, Instruments, and Systems, accepted
Microstructural Changes in Carbonized Wood-Lignin, a Potential Space Material, in Response to AtomicOxygen Irradiation
Toshimitsu Hata, Sensho Honma, Takeshi Kajimoto, Kyoichi Oshida, Yuki, Tobimatsu, Masahito Tagawa,Hirotsugu Kojima, Subyakto
Biomass Conversion and Biorefinery, October 16, 2023, published online, doi.org/10.1007/s13399-023-04957-5
Formation of nanoscale protrusions on polymer films after atomic oxygen Exposure: Observations withpositron annihilation lifetime spectroscopy
Aki Goto, Koji Michishio, Toshitaka Oka, Masahito Tagawa, Shinichi Yamashita
Langmuir Vol.39 No.34 (2023) 11954-11963
Anisotropic molecular scattering at microstructured surface for rarefied gas compression inside airbreathing ion engine
Kosuke Shoda, Naoki Kano, Yuki Jotaki, Keisuke Ezaki, Kazuki Itatani, Takashi Ozawa, Yusuke Yamashita,
Kazutaka Nishiyama, Kumiko Yokota, Masahito Tagawa
CEAS Space Journal Vol.15, No.3 (2023) pp. 403-411.
Formation of nanoscale protrusions on polymer films after atomic oxygen irradiation: Changes inmorphologies, masses, and FT-IR spectra
Aki Goto, Shinichi Yamashita, Masahito Tagawa
Langmuir Vol.38 No.11 (2022) 3339-3349
Laser-detonation hyperthermal beam source applicable to VLEO environmental simulations
Masahito Tagawa, Ryota Okura, Wataru Ide, Sasuga Horimoto, Keisuke Ezaki, Atsushi Fujita, Kosuke Shoda,Kumiko Yokota,
CEAS Space Journal Vol.14, No.4 (2022) pp.757-765.
Effect of atomic hydrogen exposure on hydrogenated amorphous carbon thin films
Yuichi Haruyama, Daiki Morimoto, Akira Heya, Koji Sumitomo, Seigo Ito, Kumiko Yokota, Masahito Tagawa,Japanese Journal of Applied Physics, Vol.60 (2021) 125504.
原子状酸素照射による高分子材料表面の微細構造形成：メカニズム解明に向けたフルエンス補正
後藤亜希、山下真一、田川雅人
放射線化学 Vol. 111 (2021) 59-61
Effect of simultaneous N2 collisions on atomic oxygen-induced polyimide erosion in sub-low Earth orbit:
comparison of laboratory and SLATS data
Kumiko Yokota, Masahito Tagawa, Yusuke Fujimoto, Wataru Ide, Yugo Kimoto, Yuta Tsuchiya, Aki Goto,
Kazuki Yukumatsu, Eiji Miyazaki, Shunsuke Imamura
CEAS Space Journal, Vol.13 (2021) 389-397

Study of rarefied aerodynamics for super low altitude satellite
Takashi Ozawa, Shunsuke Imamura, Masahito Tagawa, Kazuhisa Fujita
Transaction of the Japan Society for Aeronautical and Space Sciences, Aerospace Technology Japan,
Vol.19, No.3 (2021) pp407-414.
Investigation and Experimental Simulation of Performance Deterioration of Microwave Discharge Ion
Thruster μ10 during Space Operation
Ryo Shirakawa, Yusuke Yamashita, Daiki Koda, Ryudo Tsukizaki, Yusuke Shimizu, Masahito Tagawa,Kazutaka Nishiyama
Acta Astronautica, Vol.174 (2020) 367-376.
Soft X-ray irradiation effect on the fluorinated DLC film,
Hiroki Takamatsu, Makoto Okada, Masahito Niibe, XiaoLong Zhou, Kenji Komatsu, Hidetoshi Saito, HirokiAkasaka, Akihiko Saiga, Koji Tamada, Masahito Tagawa, Kumiko Yokota, Yuichi Furuyama, Kazuhiro Kanda,
Diamond and Related Materials, Vol.79 (2017) 14-20.

Hyperthermal atomic oxygen beam irradiation effect on the hydrogenated Si-doped DLC film
Kengo Kidena, Minami Endo, Hiroki Takamatsu, Ryo Imai, Masahito Niibe, Kumiko Yokota, Masahito Tagawa,Yuichi Furuyama, Keiji Komatsu, Hidetoshi Saitoh, Kazuhiko Kanda,
Trans. Mat. Res. Soc. Japan, Vol40, No.4, (2015) pp.353-358.
Resistance of hydrogenated Ti-containing DLC film to hyperthermal atomic oxygen
Kengo Kidena, Minami Endo, Hiroki Takamatsu, Masahito Niibe, Masahito Tagawa, Kumiko Yokota, YuichiFuruyama, Keiji Komatsu, Hidetoshi Saitoh, Kazuhiro Kanda,Metals, Vol.5, (2015) pp. 1957-1970. doi:10.3390/met5041957
Hyperthermal atomic oxygen beam irradiation effect on the Ti-containing DLC film
Kazuhiro Kanda, Kazuhiro Fukuda, Ryo Imai, Masahito Niibe, Sinya Fujimoto, Kumiko Yokota, MasahitoTagawa,Diamond and Related Materials, Vol.41 (2014) pp.49-52.
DOI:10.1016/j.diamond.2013.10.006
Multiple-composition hyperthermal atomic beams formed by a laser-induced plasma for planetaryenvironmental studies
Kumiko Yokota, Daiki Watanabe, Junki Ohira, Masahito Tagawa,Physica Scripta, Vol.T161 (2014) 013035.
DOI: 10.1088/0031-8949/2014/T161/014035
A synchrotron radiation photoelectron spectroscopic study on the oxidation of Si in diamond-like carbon
film by hyperthermal O-atom beam
Kumiko Yokota, Masahito Tagawa, Akitaka Yoshigoe, Yuden Teraoka,
Journal of Surface Analysis, Vol.20 No.3 (2014) pp.221-225.
Effect of Atomic Oxygen Irradiation on Field Emission Cathodes in Low Earth Orbit
Atsuko Shimada, Yoshinobu Tanaka, Yasushi Ohkawa, Koji Matsumoto, Masahito Tagawa, Makoto Matsui,
Yoshiki Yamagiwa,Aerospace Technology Japan, Vol. 12(2014) No. ists29 p.Pb_59-Pb_64.
Relative Electron Impact Ionization Probabilities of O, O 2 and Ar Components in the Laser-Detonation
Hyperthermal Beams
Kumiko Yokota, Shigeru Yasuda, Akira Mizutani, Masahito Tagawa,Japanese Journal of Applied Physics, Vol.52 (2013) 038002.
Experimental Study on Air Breathing Ion Engine using Laser Detonation Beam Source
Masahito Tagawa, Kazutaka Nishiyama, Kumiko Yokota, Yasuo Yoshizawa, Daisaku Yamamoto, Takaho Tsuboi,Hitoshi Kuninaka,
J. Propulsion and Power, Vol.29 (2013) 501-506.
EUV emission from laser-sustained Plasma during atomic oxygen tests
Masahito Tagawa, Kazuhiro Kishida, Kumiko Yokota, Yugo Kimoto, Mayuko Koga, Hiroaki Nishimura,
J. Spacecraft and Rockets, Vol.50 (2013) 460-462.
Comparison of macro and microtribological properties of molybdenum disulfide film exposed to LEO spaceenvironment
Masahito Tagawa, Kumiko Yokota, Kunitaka Ochi, Masao Akiyama, Koji Matsumoto, Mineo Suzuki,Tribology Letters, Vol.45, No.2 (2012) 349-356.
Fabrication of Fluorine-terminated Diamond-Like Carbon Thin Film Using a Hyperthermal Atomic
Fluorine Beam
Kazuhiro Kanda, Noriko Yamada, Kumiko Yokota, Masato Tagawa, Masahito Niibe, Makoto Okada, Yuichi
Haruyama and Shinji Matsui,
Diamond and Related Materials, Vol. 20, 2011, pp703-706.
Effect of the Soft X-rays on Highly Hydrogenated Diamond-Like Carbon Films
Kazuhiro Kanda, Kumiko Yokota, Masahito Tagawa, Mayumi Tode, Yuden Teraoka, Shinji Matsui,Japanese Journal of Applied Physics, Vol.50 No.5 (2011) 055801.
Investigation into tolerance of polysiloxane-block-polyimide film against atomic oxygen
Eiji Miyazaki, Masahito Tagawa, Kumiko Yokota, Rikio Yokota, Yugo Kimoto, Junichiro Ishizawa,
Acta Astronautica Vol.66 No.5-6 (2010) pp.922-928.

Effect of ultraviolet emission from the oxygen plasma on the accelerated erosion phenomenon of fluorinatedpolymer in the atomic oxygen ground tests
Masahito Tagawa, Kumiko Yokota, Kazuhiro Kishida, Akio Okamoto, Jun-ichiro Ishizawa, Timothy K. Minton,
High Performance Polymers Vol.22 No.2 (2010) pp.213-224.
Degradation property of commercially available Si-containing polyimide in simulated atomic oxygen andVUV environments for low Earth orbit
Kumiko Yokota, Shingo Abe, Masahito Tagawa, Minoru Iwata, Eiji Miyazaki, Jun-ichiro Ishizawa, Yugo Kimoto,
Rikio Yokota,
High Performance Polymers, Vol.22 No.2 (2010) pp.237-251.
Synchrotron radiation photoelectron spectroscopy and near-edge x-ray absorption fine structure study onoxidative etching of diamond-like carbon films by hyperthermal atomic oxygen
Masahito Tagawa, Kumiko Yokota, Akira Kitamura, Koji Matsumoto, Akitaka Yoshigoe, Yuden Teraoka,
Kazuhiro Kanda, Masahito Niibe,
Applied Surface Science, Vol. 256 No.24 (2010) 7678-7683.
Mechanistic studies of atomic oxygen reactions with polymers and combined effects with vacuum ultraviolet
light
Masahito Tagawa, Timothy K. Minton,
MRS Bulletin, Vol.35, No.1 (2010) 35-40.
Energy dependence of hyperthermal oxygen atom erosion of a fluorocarbon polymer: relevance to spaceenvironmental effectMasahito Tagawa, Kumiko Yokota, Kazuhiro Kishida, Akio Okamoto, Timothy K. Minton,ACS Advanced Materials and Interfaces, Vol.2, No.7 (2010) pp.1866-1871.
Electronic structure of hydrogenated amorphous carbon thin films as a function of annealing temperatureusing photoemission spectroscopy
Yuichi Haruyama, Masahito Tagawa, Kumiko Yokota, Shinji Matsui,Japanese Journal of Applied Physics, Vol.48, (2009) 055505.
Erosion of FEP Teflon and PMMA by VUV radiation and hyperthermal O or Ar atoms"
Jianming Zhang, Ned F. Lindholm, Amy L. Brunsvold, Hari P. Upadhyaya, and Timothy K. Minton, Masahito
Tagawa,ACS Appl. Mater. Interfaces, Vol. 1, No.3 (2009) 653-660.
Atomic oxygen concentrators for material exposure acceleration tests in low earth orbit
Masahito Tagawa, Hiroaki Doi, Kumiko Yokota,
J. Spacecraft and Rockets, Vol.46, No.2 (2009) 226-229.
Hydrogen desorption from a diamond-like carbon film by hyperthermal atomic oxygen exposures
Kumiko Yokota, Masahito Tagawa, Akira Kitamura, Koji Matsumoto, Akitaka Yoshigoe, Yuden Teraoka,
Applied Surface Science, Vol.255 No.13-14 (2009) 6710-6714.
Atomic layer fluorination of highly oriented pyrolytic graphite using hyperthermal atomic fluorine beam
Masahito Tagawa, Kumiko Yokota, Ken-ichi Maeda, Akitaka Yoshigoe, Yuden Teraoka,
Applied Physics Express, Vol.2, No.6 (2009) 066002.
Fluorination of PMDA-ODA Polyimide using Hyperthermal Atomic Fluorine Beams
Masahito Tagawa, Kumiko Yokota, Kensuke Akamatsu, Hidemi Nawafune,
Polyimides and Other High Temperature Polymers Vol.5, (VSP, Leiden, NL, 2009) pp249-260.
Durability of a Silicon-Containing Polyimide in a Simulated Low Earth Orbit Space Environment
Kumiko Yokota, Masahito Tagawa, Minoru Iwata, Eiji Miyazaki, Jun-ichiro Ishizawa, Mineo Suzuki, RikioYokota,
Polyimides and Other High Temperature Polymers Vol.5, (VSP, Leiden, NL, 2009) pp379-390.
Atomic oxygen-induced polymer degradation phenomena in simulated LEO space environments: How dopolymers react in a complicated space environment?
Masahito Tagawa, Kumiko Yokota,
Acta Astronautica, Vol.62 (2008) 203-211.
Comparison of polyethylene and polyimide as a fluence monitor of atomic oxygen
Yokota K., Tagawa M.,
J. Spacecraft and Rockets, Vol.44, No.2 (2007) pp.434-438.

Space environmental effects on MoS2 and diamond-like carbon lubricating films -atomic oxygen-induced
erosionM. Tagawa, K. Yokota, K. Matsumoto, M. Suzuki, Y. Teraoka, A. Kitamura, M. Belin, J. Fontaine, J-M. Martin,Surface and Coating Technology, Vol.202 (2007) pp.1003-1010.
Direct insertion of oxygen atoms into the backbonds of surface Si atoms using translational energies ofoxygen atom beams
M. Tagawa, K. Yokota, S. Tsumamoto, C. Sogo, A. Yoshigoe, Y. Teraoka,
Applied Physics Letters, Vol.91 (2007) 033504.
Atomic beam-induced fluorination of polyimide and its application to site-selective Cu metallization
M. Tagawa, K. Maeda, T. Kajita, K. Yokota, K. Akamatsu, H. Nawafune,Langmuir, Vol.23, No.23 2007, pp.11351-11354.
Detailed structural analysis and the dielectric properties of silicon nitride film fabricated using purenitrogen plasma generated near atmospheric pressure
Ryoma Hayakawa, Mari Nakae, Takeshi Yoshimura, Atsushi Ashida, Norifumi Fujimura, Tsuyoshi Uehara,
Masahito Tagawa, Yuden Teraoka,
Journal of Applied Physics, Vol.100 (2006) pp.073710.
Computer simulation and its experimental verification of atomic oxygen concentration
Tagawa M., Matsumoto K., Doi H., Yokota K.,
J. Spacecraft and Rockets, Vol.43, No.5 (2006) 999-1003.
A comparison of ultra-thin SiO2 films formed by hyperthermal O-atom beam and rapid thermal oxidation;synchrotron radiation photoemission and crystal truncation rod scattering study
Masahito Tagawa, Kumiko Yokota, Akitaka Yoshigoe, Yuden Teraoka, Takayoshi Shimura,
Applied Physics Letters, Vol.88 (2006) pp.133512-133514.