Secondary ion generation mechanism studied by ISS-SIMS and work function measurements
作者： Eizoh Kawatoh , Norihito Terada , Ryuichi Shimizu , Hee Jae Kang
DOI: 10.1016/0168-583X(89)90737-4
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摘要: Abstract Oxygen enhancement effects in secondary ion generation were studied polycrystalline Ni at different partial pressures of oxygen, Po2, by sequential ISS-SIMS and work function measurements. The investigation has revealed that the undergoes three stages: (I) intensity increases monotonically with an increase which is described very well electron tunneling model. (II) This tendency abruptly changes, i.e. decreases rapidly, for a slight Po2 (III) intensities gradually become saturated further Po2. It also been found critical coverage, θc, corresponds exactly to stage behaviour, was observed Blaise Bernheim single crystal (100)Ni surface.
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