Effect of CO/sub 2/ gas on the thermal-nonequilibrium ionization of nitrogen
Journal Article
·
· Sov. Phys. - Tech. Phys. (Engl. Transl.); (United States)
OSTI ID:5971673
Experimental measurements of electron density in a supersonic CO/sub 2/:N/sub 2/ gas mixture containing varying amounts of CO/sub 2/ are reported. A series of current-voltage curves are recorded for mixtures with different CO/sub 2/ contents at constant E/N = 3 x 10 to the -16th V sq cm. It is shown that adding CO/sub 2/ in amounts typical for gas lasers (5-15 percent) decreases the electron density in the jet by no more than 50 percent. If N/sub 2/ molecules excited to high vibrational states are involved in the ionization reaction, enough of them remain to support ionization even after energy exchange with CO/sub 2/. It is concluded that the vibrational degrees of freedom of the laser-active molecules in homogeneous CO/sub 2/ gasdynamic lasers can be pumped further by using a bulk discharge in a supersonic jet of nonequilibrium ionized gas. 12 references.
- Research Organization:
- Institut Teplo- i Massoobmena, Minsk, Belorussian SSR
- OSTI ID:
- 5971673
- Journal Information:
- Sov. Phys. - Tech. Phys. (Engl. Transl.); (United States), Journal Name: Sov. Phys. - Tech. Phys. (Engl. Transl.); (United States) Vol. 31; ISSN SPTPA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
DISPERSIONS
ELECTRIC FIELDS
ELECTRON DENSITY
ELEMENTS
FLUID FLOW
GAS LASERS
IONIZATION
LASERS
MACH NUMBER
MIXTURES
NITROGEN
NONMETALS
OXIDES
OXYGEN COMPOUNDS
SHOCK TUBES
SUPERSONIC FLOW
VELOCITY
420300* -- Engineering-- Lasers-- (-1989)
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
DISPERSIONS
ELECTRIC FIELDS
ELECTRON DENSITY
ELEMENTS
FLUID FLOW
GAS LASERS
IONIZATION
LASERS
MACH NUMBER
MIXTURES
NITROGEN
NONMETALS
OXIDES
OXYGEN COMPOUNDS
SHOCK TUBES
SUPERSONIC FLOW
VELOCITY