Light induced atom desorption:a photo-atomic effect

The effect of non resonant and weak light on the adsorption-desorption processes of alkali atoms on organic coated surfaces is discussed and a new phenomenon, the light-induced atom desorption, is presented. It is demonstrated that light can control the adsorption-desorption as well as the diffusion of the atoms inside silane coatings

Energy-Pooling Processes in Laser-Excited Alkali Vapors : An Update on Experiments

Les processus d'"energy pooling" dans les vapeurs atomiques alcalines excitées par laser sont passés en revue. On présente en particulier les résultats les plus récents obtenus pour le sodium.We present a short review of energy pooling experiments in laser excited alkali vapors, for low atom density and low radiation intensity. Special emphasis is devoted to the most recent results obtained in sodium vapor

Energy pooling collision cross-section measurements in Indium: the In(6S1/2) + In(6S1/2) In(n P) + In(5P3/2) process

The quantitative investigation of the energy pooling collision (EPC) process between resonantly laser excited In atoms is reported. The process is studied in a laser induced fluorescence (LIF) experiment where the nP populations, with n=11, 10 and 9, are monitored. The population mechanism for these levels is verified via a temporal analysis of the fluorescence signals. This is possible in In due to the strongly reduced self trapping of the resonant radiation. The cross section for energy pooling collision to these nP levels has been derived by considering the Rydberg character of these levels