Pressure-dependent electron attachment and breakdown strengths of unitary gases, and synergism of binary gas mixtures: a relationship

Conference · Sun Apr 01 04:00:00 EST 1984

OSTI ID:7001522

Hunter, S R; Christophorou, L G

The relationship between the pressure-dependent electron attachment rate constants (k/sub a/) which have been observed in 1-C/sub 3/F/sub 6/ and in several perfluoroalkanes, and the uniform field breakdown strengths (E/N)/sub lim/ in these gases is discussed. Measurements of the pressure dependence of k/sub a/ of OCS in a buffer gas of Ar are presented and the possible pressure dependence of (E/N)/sub lim/ in OCS is discussed. Uniform field breakdown measurements have been performed in C/sub 3/F/sub 8/, n-C/sub 4/F/sub 10/, and SO/sub 2/ over a range of gas pressures (3 less than or equal to P/sub T/ less than or equal to 290 kPa) and are reported. All three molecules have been found to possess pressure-dependent (E/N)/sub lim/ values. The various types of synergistic behavior which have been observed in binary gas dielectric mixtures are summarized and discussed. A new mechanism is outlined which can explain the synergism observed in several gas mixtures where the (E/N)/sub lim/ values of the mixutres are greater than those of the individual gas constituents. Model calculations are presented which support this mechanism, and can be used to explain the pressure-dependent synergistic effects which have been reported in 1-C/sub 3/F/sub 6//SF/sub 6/ gas mixture.

• Research Organization: Oak Ridge National Lab., TN (USA); Tennessee Univ., Knoxville (USA). Dept. of Physics
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 7001522
• Report Number(s): CONF-840403-3; ON: DE84011656
• Country of Publication: United States
• Language: English

Related Subjects

640301* -- Atomic
Molecular & Chemical Physics-- Beams & their Reactions
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BREAKDOWN
CARBON COMPOUNDS
CARBON FLUORIDES
CHALCOGENIDES
DIELECTRIC MATERIALS
ELECTRIC FIELDS
ELECTRICAL EQUIPMENT
ELECTRICAL INSULATORS
ELECTRON ATTACHMENT
EQUIPMENT
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
MATERIALS
OXIDES
OXYGEN COMPOUNDS
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES