| タイトル | The reaction efficiency of thermal energy oxygen atoms with polymeric materials |
| 著者（英） | Koontz, S. L.; Nordine, Paul |
| 著者所属（英） | NASA Johnson Space Center |
| 発行日 | 1990-01-01 |
| 言語 | eng |
| 内容記述 | The reaction efficiency of several polymeric materials with thermal-energy (0.04 eV translational energy), ground-state (O3P) oxygen atoms was determined by exposing the materials to a room temperature gas containing a known concentration of atomic oxygen. The reaction efficiency measurements were conducted in two flowing afterglow systems of different configuration. Atomic oxygen concentration measurements, flow, transport and surface dose analysis is presented in this paper. The measured reaction efficiencies of Kapton, Mylar, polyethylene, D4-polyethylene and Tedlar are .001 to .0001 those determined with high-energy ground-state oxygen atoms in low earth orbit or in a high-velocity atom beam. D4-polyethylene exhibits a large kinetic isotope effect with atomic oxygen at thermal but not hyperthermal atom energies. |
| NASA分類 | NONMETALLIC MATERIALS |
| レポートNO | 91A49815 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/346098 |
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