Collisional deactivation of vibrationally highly excited polyatomic molecules. II. Direct observations for excited toluene

Journal Article · Wed Jun 01 00:00:00 EDT 1983 · J. Chem. Phys.; (United States)

DOI:https://doi.org/10.1063/1.444670· OSTI ID:6050102

Hippler, H; Troe, J; Wendelken, H J

Vibrationally highly excited toluene molecules with 52 000 cm/sup -1/ of vibrational energy have been prepared by UV laser excitation of the isomer cycloheptatriene and subsequent isomerization. The collisional loss of energy from the excited toluene molecules has been observed directly by monitoring hot UV absorption spectra. Direct measurements of the average energies <..delta..E> transferred per collision have been made for about 60 different bath gases. For complex bath gases, <..delta..E> values appear to be considerably smaller than those derived from earlier indirect measurements. <..delta..E> was found not (or only slightly) to depend on the excitation energy.

• Research Organization: Institut fuer Physikalische Chemie, Universitaet Goettingen, Tammannstrasse 6, D 3400 Goettingen, Germany
• OSTI ID: 6050102
• Journal Information: J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 78:11; ISSN JCPSA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular &amp; Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ABSORPTION SPECTRA
AROMATICS
COLLISIONS
ENERGY LEVELS
ENERGY TRANSFER
EXCITED STATES
HYDROCARBONS
MOLECULE COLLISIONS
MOLECULE-MOLECULE COLLISIONS
ORGANIC COMPOUNDS
SPECTRA
TOLUENE
VIBRATIONAL STATES