摘要: The kinetics of surface 'explosions' on single-crystal surfaces has been explored by mathematical modelling a number possible kinetic models and examining the quality fit to wide range experimental data. Second-order autocatalysis previously preferred model. However, this model is inconsistent since it assumes random distribution adsorbates yet islanding known occur in 'explosive' adsorbate systems. Indeed, found be necessary assume high local coverage (practically independent global coverage) near initiation sites data well. Hence, new approach that takes into account effect interactions between neighbouring required. A circular island developed which incorporates effects asynchronous reduced yield caused merging using simple assumptions. This capable producing fits desorption as good those obtained second-order
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