VUV fluorescence following electron-impact dissociative excitation of CS{sub 2}
- Physics Department, University of Windsor, Windsor, Ontario N9B 3P4 (Canada)
Electron-impact dissociation of CS{sub 2} has been studied by observation of the atomic spectral emission features in the range 115-170 nm. Absolute photoemission cross sections are presented over the complete wavelength range for an incident electron energy of 100 eV. As an example, the measured cross section of the strong C i emission at 165.7 nm, which is a prominent feature in many solar and other extraterrestrial spectra, is (1.45{+-}0.19)x10{sup -18} cm{sup 2}. Comparison with earlier cross-sectional measurements suggest that these were too high by a factor of more than three. Excitation functions of the dominant C i (156.1 nm) and S i (147.4 nm) emission lines have been measured for electron-impact energies from threshold to 360 eV. From appearance energy measurements in the near-threshold region, likely fragmentation channels are identified which involve both two-fragment breakup and total fragmentation of the parent CS{sub 2}.
- OSTI ID:
- 21529079
- Journal Information:
- Physical Review. A, Journal Name: Physical Review. A Journal Issue: 1 Vol. 83; ISSN 1050-2947; ISSN PLRAAN
- Country of Publication:
- United States
- Language:
- English
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ALKALI METAL COMPOUNDS
CARBON COMPOUNDS
CARBON SULFIDES
CESIUM COMPOUNDS
CESIUM SULFIDES
CHALCOGENIDES
COMPARATIVE EVALUATIONS
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
DISSOCIATION
ELECTROMAGNETIC RADIATION
ELECTRONS
ELEMENTARY PARTICLES
EMISSION
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EV RANGE
EVALUATION
EXCITATION
EXCITATION FUNCTIONS
FAR ULTRAVIOLET RADIATION
FERMIONS
FLUORESCENCE
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PHOTOEMISSION
PHOTON EMISSION
RADIATIONS
SECONDARY EMISSION
SPECTRA
SULFIDES
SULFUR COMPOUNDS
ULTRAVIOLET RADIATION
WAVELENGTHS