Abstract
Electron-hole pair excitations in low energy collisions of dipolar molecules with metal surface are studied in the framework of one-dimensional independent electron model. The motion of the incoming (rigid) molecule is treated classically and is coupled to the electron dynamics, which is treated quantum mechanically through the timedependent self-consistent field (TDSCF) approximation. Model calculations were carried out for NO and HCl molecules colliding with surface of Li and Al. The average fraction of collision energy converted to electron-hole pair excitation 〈ΔE〉 E and the probability for trapping due to this process were evaluated for collision energies in the range 0.01-10 eV. The effects of the pure dipolar electron-molecule interaction is compared to that of the short range interaction. It is concluded that the (screened) long range dipolar part of the electron-molecule interaction can play an important role in the collisional energy transfer between dipolar molecules and metal surfaces.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 531-542 |
| Number of pages | 12 |
| Journal | Surface Science |
| Volume | 151 |
| Issue number | 2-3 |
| DOIs | |
| State | Published - Mar 2 1985 |
Funding
The Fritz Haber Center is supported by the Minerva Gesellschaft fur die Forschung, Munchen, FRG. This research was supported in part by the US-Israel Binational Science Foundation, Jerusalem, Israel. M.R. is gratified to the chemistry Division of the NSF for support.
ASJC Scopus subject areas
- Condensed Matter Physics
- Surfaces and Interfaces
- Surfaces, Coatings and Films
- Materials Chemistry