首页   按字顺浏览 期刊浏览 卷期浏览 Technique for measuring surface diffusion by laser‐beam‐localized surface photochemistry
Technique for measuring surface diffusion by laser‐beam‐localized surface photochemistry

 

作者: H. J. Zeiger,   J. Y. Tsao,   D. J. Ehrlich,  

 

期刊: Journal of Vacuum Science&Technology B: Microelectronics Processing and Phenomena  （AIP Available online 1985）
卷期: Volume 3, issue 5  

页码: 1436-1440

 

ISSN:0734-211X

 

年代: 1985

 

DOI:10.1116/1.583005

 

出版商: American Vacuum Society

 

关键词: DECOMPOSITION;PHOTODISSOCIATION;ADSORPTION;DESORPTION;DIFFUSIVITY;SURFACE PROPERTIES;MIGRATION;LEAD COMPOUNDS;ETHYL COMPOUNDS;SAPPHIRE;SORPTIVE PROPERTIES;NEUTRAL−PARTICLE TRANSPORT;GREEN FUNCTION;PHOTOCHEMISTRY;LASER BEAMS;SURFACE ANALYSIS;Al2O3

 

数据来源: AIP

 

摘要:

A technique is described for determining the surface diffusivity of a weakly bound adsorbate by measuring the kinetics of a spatially localized, laser‐beam‐driven surface photoreaction. The diffusivity is extracted from the experimental data by means of a Green’s function integral technique. The solution is numerically integrated in order to calculate the spatial and temporal evolution of the surface‐number‐density of parent and product molecules. The new technique has been applied to experiments with tetraethyl lead molecules adsorbed on sapphire.

 

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