V-V energy transfer from high vibrational levels of propynal

Conference · Mon Dec 31 23:00:00 EST 1979

OSTI ID:6874002

Brenner, D M

Results on infrared multiphoton absorption in propynal in which changes in the vibrational populations of ..nu../sub 6/ (v = 1,2) and ..nu../sub 10/ (v = 1,2) pumped under molecular beam or fast flow conditions were observed and reported recently. By producing a vibrationally excited beam of propynal and allowing for subsequent collisions with added gas molecules, it was possible to study V-V energy transfer processes which occur on a time scale less than or equal to gas kinetic. Relative cross sections for energy transfer from high vibrational levels were measured directly for the first time using visible - IR double resonance in a molecular beam - gas experiment. The process can be described by the general equation, C/sub 3/H/sub 2/O (v > 1) + M ..-->.. C/sub 3/H/sub 2/O (v = 1) + M + ..delta..E.

• Research Organization: Brookhaven National Lab., Upton, NY (USA)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 6874002
• Report Number(s): BNL-27999; CONF-801201-1
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400301* -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ABSORPTION SPECTROSCOPY
ALDEHYDES
BEAMS
ENERGY LEVELS
ENERGY TRANSFER
EXCITED STATES
INFRARED SPECTRA
MOLECULAR BEAMS
ORGANIC COMPOUNDS
SPECTRA
SPECTROSCOPY
VIBRATIONAL STATES