Rotational energy compensates the energy defect in near-resonant vibration-vibration energy transfer: a state-to-state study of NO(v) + N20.

Our lack of understanding of the factors that compensate energy defects in near resonant V-V energy transfer constrains our ability to accurately predict resonance widths and, thus, the overall importance of such processes. We have carried out one of the first truly state-to-state measurements of near resonant V-V energy transfer under single collision conditions, employing the crossed molecular beams, stimulated emission pumping technique. We have varied the energy defect ΔE for the process: NO

Collisions and Chemistry of Super-Excited Molecules: Experiments Using the PUMP - DUMP - PROBE Technique

Modern lasers now routinely allow experiments where large populations of highly excited molecules can be prepared with perfect quantum state selection. In a sense, the laser has become the physical chemist’s synthetic tool, allowing “optical distillation” of chemical reactants in the most purified form imaginable, individual quantum states. This article describes applications from the authors’ laboratory of these methods to studies in chemical reaction dynamics. A detailed description of the PUMP, DUMP, and PROBE technique is presented with specific emphasis on the use of stimulated emission pumping in scattering experiments. Many aspects of the behavior of highly vibrationally excited molecules are presented. These topics include infrared emission, rotational energy transfer, vibrational energy transfer, super-excited molecules colliding with surfaces, and the role of highly vibrationally excited O2 in the stratosphere

State-selective detection of co using a tunable arf excimer laser

Contains fulltext : 99072.pdf (publisher's version ) (Open Access

Coherent cavity ring down spectroscopy

Contains fulltext : 99017.pdf (publisher's version ) (Open Access