Multiphoton ionization of atomic hydrogen in CH/sub 4/ pyrolysis
Journal Article
·
· J. Phys. Chem.; (United States)
Hydrogen atoms are detected in situ in atmospheric pressure CH/sub 4/ pyrolysis by three-photon ionization via two-photon resonance of the 2S arrow to the left 1S transition at 243 nm. An expected deuterium isotope shift of 22.4 cm/sup -1/ is observed during CD/sub 4/ pyrolysis. Similar resonant multiphoton ionization signals of H atoms and D atoms are also observed from thermal dissociation of H/sub 2/ and D/sub 2/, respectively. The ionization signals are converted into absolute concentration via the H/sub 2/ in equilibrium 2H equilibrium. The detection sensitivity is estimated to be approx. 10/sup -9/-10/sup -8/ mole fraction at 1-atm pressure.
- Research Organization:
- Exxon Research and Engineering Co., Annandale, NJ
- OSTI ID:
- 6836117
- Journal Information:
- J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 90:26; ISSN JPCHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800* -- Combustion
Pyrolysis
& High-Temperature Chemistry
ALKANES
ATMOSPHERIC PRESSURE
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
DATA
DECOMPOSITION
DEUTERIUM
DEUTERIUM COMPOUNDS
DISSOCIATION
ELEMENTS
EXPERIMENTAL DATA
HYDROCARBONS
HYDROGEN
HYDROGEN COMPOUNDS
HYDROGEN ISOTOPES
INFORMATION
IONIZATION
ISOTOPES
KINETICS
LIGHT NUCLEI
METHANE
NONMETALS
NUCLEI
NUMERICAL DATA
ODD-ODD NUCLEI
ORGANIC COMPOUNDS
PHOTOIONIZATION
PYROLYSIS
REACTION KINETICS
SPECTRAL SHIFT
STABLE ISOTOPES
THERMOCHEMICAL PROCESSES
400800* -- Combustion
Pyrolysis
& High-Temperature Chemistry
ALKANES
ATMOSPHERIC PRESSURE
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
DATA
DECOMPOSITION
DEUTERIUM
DEUTERIUM COMPOUNDS
DISSOCIATION
ELEMENTS
EXPERIMENTAL DATA
HYDROCARBONS
HYDROGEN
HYDROGEN COMPOUNDS
HYDROGEN ISOTOPES
INFORMATION
IONIZATION
ISOTOPES
KINETICS
LIGHT NUCLEI
METHANE
NONMETALS
NUCLEI
NUMERICAL DATA
ODD-ODD NUCLEI
ORGANIC COMPOUNDS
PHOTOIONIZATION
PYROLYSIS
REACTION KINETICS
SPECTRAL SHIFT
STABLE ISOTOPES
THERMOCHEMICAL PROCESSES