Internal energy distribution of the parent molecule and its photofragments following ir multiphoton absorption. Final scientific report, April 1, 1981-September 30, 1982

Technical Report · Fri Jan 01 04:00:00 EST 1982

OSTI ID:6200547

Zare, R N

The internal energy distributions of the C/sub 2/ and CN fragments formed during the Infrared Multiphoton dissociation (IRMPD) of vinyl cyanide (CH/sub 2/ = CHCN) have been observed using the technique of laser-induced fluorescence. These experiments were performed using either a molecular beam or low-pressure flowing gas of the vinyl cyanide parent molecule. By varying the time delay between the CO/sub 2/ laser pulse and dye laser probe, the dependence of both the C/sub 2/ and CN fragment energy on the effective laser intensity was investigated. A plasma shutter was used to remove the less intense tail of the CO/sub 2/ laser pulse without otherwise modifying the laser output. It was found that variations in the pulse intensity distribution control the rotational distribution of CN fragments formed in the photolysis of vinyl cyanide.

• Research Organization: Stanford Univ., CA (USA). Dept. of Chemistry
• DOE Contract Number: AT03-80ER10606
• OSTI ID: 6200547
• Report Number(s): DOE/ER/10606-T1; ON: DE83010997
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500* -- Photochemistry
ACRYLONITRILE
BINDING ENERGY
CARBON
CARBON DIOXIDE LASERS
CHEMICAL BONDS
CHEMICAL REACTIONS
CYANIDES
DECOMPOSITION
DYE LASERS
ELECTROMAGNETIC RADIATION
ELEMENTS
ENERGY
ENERGY LEVELS
EXCITED STATES
FLUORESCENCE
GAS LASERS
HIGH TEMPERATURE
INFRARED RADIATION
IRRADIATION
LASERS
LIQUID LASERS
LOW PRESSURE
LUMINESCENCE
NITRILES
NONMETALS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOLYSIS
PULSED IRRADIATION
RADIATIONS
ROTATIONAL STATES