Femtosecond Photodesorption of Small Molecules from Surfaces: A Theoretical Investigation from First Principles

  • Christiane P. Koch*
  • , Thorsten Klüner
  • , Hans Joachim Freund
  • , Ronnie Kosloff
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

A microscopic model for the excitation and relaxation processes in photochemistry at surfaces is developed. Our study is based on ab initio calculations and the surrogate Hamiltonian method treating surface electron-hole pairs as a bath of two-level systems. Desorption probabilities and velocities in the experimentally observed range are obtained. The excited state lifetime is calculated, and a dependence of observables on pulse length is predicted.

Original languageEnglish
Pages (from-to)4
Number of pages1
JournalPhysical Review Letters
Volume90
Issue number11
DOIs
StatePublished - 2003

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