Abstract
The effect of lateral interactions among surface adsorbates on the formation of coverage gratings by laser induced thermal desorption (LITD) has been simulated. It was found that measurements of diffracted second harmonic generation (SHG) signals from these gratings as a function of desorption laser power and initial surface coverage can give information on the type and strength of interactions among adsorbates on the surface, i.e. attractive, repulsive or none. The ratios of the second to the first order diffracted SH signals were found to increase with initial coverage for attractive interactions and to decrease for repulsive interactions.
Original language | English |
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Pages (from-to) | 389-394 |
Number of pages | 6 |
Journal | Surface Science |
Volume | 376 |
Issue number | 1-3 |
DOIs | |
State | Published - 10 Apr 1997 |
Keywords
- Laser induced thermal desorption (LITD)
- Second harmonic generation