Processes of interaction of low-energy electrons with molecules play important role in gaseous, plasma, liquid and condensed-matter environments. Increased interest to these processes is stimulated by recent studies of their role in the physics of the upper atmosphere and in biological environments. Placing molecules in laser fields creates opportunities for control and manipulation of electron-molecule collision processes. Electron-molecule interactions in different environments present interest not only due to their importance in applications, but also because they demonstrate interesting physics mechanisms. The present project proposes to study electron-molecule collision processes in gas phase, on surfaces, in condensed matter environment and in the presence of strong laser fields. The first part of the proposal deals with dissociative electron attachment to polyatomic molecules with the account of interaction between two resonances or interaction between several vibrational modes. The role of vibrational Feshbach resonances due to weakly-bound dipole-supported states in these systems will be further investigated. The second class of processes which will be studied is dissociative electron attachment to physisorbed molecules and molecules embedded in bulk medium. The theory of these processes taking into account the electron interaction with the environment will be further developed. Finally, the effects of laser field in electron-molecule interaction will be studied. The main focus will be on the above-threshold ionization and particularly its resonant enhancement which was recently discovered in atom ionization.
