Modification of a 5-eV Atomic-Oxygen Laser Detonation Source
| Autor: | M. Dinguirard, V. Viel-Inguimbert, Irina Gouzman, Eitan Grossman |
|---|---|
| Rok vydání: | 2003 |
| Předmět: |
Materials science
business.industry Detonation Aerospace Engineering Plasma Radiation Laser law.invention Kapton Space and Planetary Science law Physics::Atomic and Molecular Clusters Transmittance Optoelectronics Physics::Atomic Physics Irradiation Physics::Chemical Physics business Beam (structure) |
| Zdroj: | Journal of Spacecraft and Rockets. 40:110-113 |
| ISSN: | 1533-6794 0022-4650 |
| DOI: | 10.2514/2.3922 |
| Popis: | The present work describes the modification of a commercial pulsed laser detonation source, used for simulating the low Earth orbit 5-eV atomic-oxygen environment. In this facility the pulsed atomic-oxygen beam originatesfrom a plasma and is accompanied by high levels of vacuum-UV radiation. Thus, the exposure of materials to the atomic-oxygen beam is therefore an exposure to a combined atomic-oxygen and vacuum-UV environment creating synergistic erosion effects. A simple, low-cost system, based on the selective reflection of oxygen atoms, was developed in order to remove the vacuum-UV component from the atomic-oxygen beam. This system reflected about 50% of the original atomic-oxygen content. The vacuum-UV content in the reflected atomic-oxygen beam was reduced to 0.03% of its content in the original atomic-oxygen beam. Chemical changes occurring in Kapton HN and Tefzel (ethylene-tetrafluoroethylene copolymer) under vacuum-UV irradiation were used to prove that the reflected residual vacuum-UV radiation has no effect on the tested polymers. |
| Databáze: | OpenAIRE |
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