Collisional energy transfer in highly excited molecules.

Supercollisions and energy transfer of highly vibrationally excited molecules.

Collisional energy-transfer probability distribution functions of highly vibrationally excited molecules and the existence of supercollisions remain as the outstanding questions in the field of intermolecular energy transfer. In this investigation, collisional interactions between ground state Kr atoms and highly vibrationally excited azulene molecules (4.66 eV internal energy) were examined at...

Temperature Dependence of Collisional Deactivation of Highly Vibrationally Excited Biphenylene

Collisional energy transfer between highly vibrationally excited biphenylene and a variety of monoand polyatomic bath gases has been measured at temperatures between 333 and 523 K. Biphenylene molecules were initially prepared with an additional vibrational energy of 28 490 cm by electronic absorption at 351 nm followed by fast internal conversion. The collisional deactivation was observed by d...

Temperature Dependence of Collisional Energy Transfer in Highly Excited Aromatics Studied by Classical Trajectory Calculations

The temperature dependence of the gas-phase collisional relaxation of highly vibrationally excited aromatic molecules has been studied using large scale classical trajectory calculations. The investigations have focused on azulene collisions with different colliders (He, Ar and N2) as well as pyrazine self-collisions providing the moments of energy transfer k∆El and k∆E l in the temperature ran...

State - resolved collisional energy transfer in highly excited NO 2 . I . Cross sections and propensities for J , K , and m J changing collisions

Classical trajectory study of energy transfer in collisions of highly excited allyl radical with argon.

Predicting the results of collisions of polyatomic molecules with a bath of atoms is a research area that has attracted substantial interest in both experimental and theoretical chemistry. Energy transfer, which is the consequence of such collisions, plays an important role in gas-phase kinetics and relaxation of excited molecules. We present a study of energy transfer in single collisions of h...

Multiplex detection of collisional energy transfer using KCSFI.

A new detection method for obtaining collisional transition probabilities P(E',E) of highly vibrationally excited molecules in the gas phase is presented. The technique employs energy-selective probing of the time-dependent vibrational population distribution by "kinetically controlled selective fluorescence (KCSF)". We present experimental results for a test system, the collisional deactivatio...