High-speed atomic oxygen irradiation of atomically thin graphene for astronomical applications

Kazuto Kashiwakura; Ikuyuki Mitsuishi; Midori Hirota; Yoshimi Niwa; Yuzuru Tawara; Ryo Kitaura; Haruka Omachi; Masahito Tagawa; Kentaro Nomoto; Kazuyuki Tsuruoka; Kenji Kawahara; Hiroki Ago

doi:10.1117/1.jatis.10.2.026006

論文 High-speed atomic oxygen irradiation of atomically thin graphene for astronomical applications

Kazuto Kashiwakura ; Ikuyuki Mitsuishi ; Midori Hirota ; Yoshimi Niwa ; Yuzuru Tawara ; Ryo Kitaura (National Institute for Materials Science) ; Haruka Omachi ; Masahito Tagawa ; Kentaro Nomoto ; Kazuyuki Tsuruoka ; Kenji Kawahara ; Hiroki Ago

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Kazuto Kashiwakura, Ikuyuki Mitsuishi, Midori Hirota, Yoshimi Niwa, Yuzuru Tawara, Ryo Kitaura, Haruka Omachi, Masahito Tagawa, Kentaro Nomoto, Kazuyuki Tsuruoka, Kenji Kawahara, Hiroki Ago. High-speed atomic oxygen irradiation of atomically thin graphene for astronomical applications. Journal of Astronomical Telescopes, Instruments, and Systems. 2024, 10 (2), 026006. https://doi.org/10.1117/1.jatis.10.2.026006

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(abstract)

In this paper, the first results of high-speed atomic oxygen (AO) irradiation tests for atomically thin single-layer graphene sheets are presented as space environmental tolerance evaluation tests for application in astronomy. The single-layer graphene sample was prepared without a metal coating, and high-speed AO irradiation tests were conducted with an averaged velocity of ∼6 km/s using a laser-detonation AO beam source, assuming a low Earth orbit (LEO) case. Scanning electron microscopy images also support this conclusion in terms of the observed image contrast. Consequently, to protect the single-layer graphene sheets from erosion, a special treatment such as coating is needed to survive in an LEO for ≳ a year.

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