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- W1648270822 abstract "In this study, a novel hyperthermal oxygen atom source has been used to perform in situ O-atom erosion of Kapton surfaces at room temperature; this surface has been examined using X-ray photoelectron spectroscopy before and after exposure to different fluences of O atoms, and then after exposure to air. The XPS data indicate that the 0:C ratio decreases from 0.23 to 0.11 during a 24-hour exposure to a 5 eV O-atom flux of about 1.4×1014 O atoms/cm2-s. This decrease in surface oxygen content is consistent with loss of the carbonyl groups. The nitrogen concentration increases with O-atom exposure, and a new N chemical state forms. Following the 24-hour, O-atom exposure, the sample was exposed to air for 3 hours and re-examined using XPS. The O, N and C concentrations return to the same values obtained before O-atom exposure due to reaction with O2 in the air. Small amounts of atmospheric moisture may adsorb as well. Previous data from space and ground simulations indicate an increase in the O Is signal with exposure to atomic oxygen. The results obtained in this study demonstrate that it is necessary to examine the chemical effects of O-atom degradation of Kapton without air exposure before surface characterization." @default.
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- W1648270822 date "2001-01-01" @default.
- W1648270822 modified "2023-09-24" @default.
- W1648270822 title "In Situ Xps Studies of Kapton Exposed to 5 EV Atomic Oxygen" @default.
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- W1648270822 doi "https://doi.org/10.1007/978-94-010-0714-6_8" @default.
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