Abstract
Introduction I T has been recognized that polyimide lm, which is widely used in space applications, is eroded by atomic oxygen in a low Earth orbit (LEO) spaceenvironment.Becausepolyimidehas beenusedas a monitoringmaterial to evaluate atomic oxygen uence, details of atomic oxygen reactionwith polyimide should be made clear under various atomic oxygen exposure conditions. One of the important factors that would in uence the reactivity of atomic oxygen is a sample temperature. However, there exists no ground-based report regarding an accuratemeasurementon the temperature dependence of polyimide erosion under the exposure to atomic oxygen beam with a translationalenergy of 5 eV, which corresponds to the collisional energy of atomic oxygen and materials in LEO. In this Note we are reporting the in situ results of temperature dependence in polyimide erosion under 5-eV atomic oxygen exposures. The effect of translational energy of the atomic oxygen beam on the temperaturedependenceof polyimideerosionwas also examined in the ground-basedexperiments.
Published Version
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