The detection of the ethynyl radical for studies of the chemistry of soot formation in hydrocarbon combustion: (Progress report)

Technical Report · Fri Jan 01 00:00:00 EST 1988

DOI:https://doi.org/10.2172/6180557· OSTI ID:6180557

The purpose of this research program has been the performance of mass resolved resonance enhanced multiphoton ionization (REMPI) spectroscopy on species of importance in combustion with primary emphasis on the REMPI detection of photolytically produced C/sub 2/H. A molecular beam, flash photolysis apparatus equipped with a time-of-flight mass spectrometer was constructed for the production and monitoring of REMPI ions. New electronic states of C/sub 2/ and HCO have been discovered with rotationally resolved REMPI spectroscopy. A weak, diffuse REMPI spectrum near 276 nm has been observed and tentatively assigned to the C/sub 2/H radical. No other REMPI spectral features attributable to C/sub 2/H were observed. 34 refs., 10 figs., 1 tab.

• Research Organization: Cornell Univ., Ithaca, NY (USA). School of Applied and Engineering Physics
• DOE Contract Number: FG02-86ER13508
• OSTI ID: 6180557
• Report Number(s): DOE/ER/13508-3; ON: DE89010874
• Resource Relation: Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ETHYL RADICALS
PHOTON EMISSION
COMBUSTION PRODUCTS
ELECTRONIC STRUCTURE
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
HYDROCARBONS
IONIZATION
PHOTOLYSIS
PROGRESS REPORT
REACTION INTERMEDIATES
RYDBERG STATES
SOOT
SPECTROSCOPY
VIBRATIONAL STATES
ALKYL RADICALS
CHEMICAL REACTIONS
DECOMPOSITION
DOCUMENT TYPES
EMISSION
EXCITED STATES
ORGANIC COMPOUNDS
PHOTOCHEMICAL REACTIONS
RADICALS
400500* - Photochemistry