首页> 外文期刊>The Journal of Chemical Physics >SURFACE MIGRATION AS A DETERMINATE FACTOR OF THE STICKING COEFFICIENT DERIVED FROM THE CHEMISORPTION MODEL
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SURFACE MIGRATION AS A DETERMINATE FACTOR OF THE STICKING COEFFICIENT DERIVED FROM THE CHEMISORPTION MODEL

机译:表面迁移作为化学吸附模型得出的定标系数的决定因素

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A chemisorption process model has been developed and a sticking coefficient has been formulated by taking the surface migration of physisorbed particles into account. This model incorporates Langmuir's model for use when the migration barrier is infinite, and the standard precursor model for use when dealing with a bare surface. The migration of incident particles was found to make the sticking coefficient independent of the surface coverage at low temperatures (approximate to 100 K). At higher temperatures, the migration appears to be a hidden parameter in the chemisorption process. The effect of migration can probably be confirmed, even at room temperature, by analyzing the chemisorption using free radicals. (C) 1995 American Institute of Physics. [References: 20]
机译:已经开发出化学吸附过程模型,并通过考虑物理吸附颗粒的表面迁移来制定粘着系数。该模型合并了Langmuir模型(当迁移障碍无限时使用)和标准前体模型(用于处理裸露表面时)。发现入射粒子的迁移使粘附系数与低温(约100 K)下的表面覆盖率无关。在较高的温度下,迁移似乎是化学吸附过程中的一个隐藏参数。即使在室温下,也可以通过使用自由基分析化学吸附来确认迁移的影响。 (C)1995年美国物理研究所。 [参考:20]

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