Pulsed volume discharge in a nonuniform electric field at a high pressure and the short leading edge of a voltage pulse
- Institute of High Current Electronics, Siberian Branch, Russian Academy of Sciences, Tomsk (Russian Federation)
It is shown that a volume discharge is formed in a nonuniform electric field for the short leading edge of a voltage pulse and nanosecond pulse duration without any additional preionisation source in various gases at pressures higher than atmospheric (6 atm in helium and 3 atm in nitrogen). Lasing at atomic transitions in Xe is obtained in an Ar-Xe mixture under a pressure of 1.2 atm for an active length of 1.5 cm. A record-high specific power input (more than 0.8 GW cm{sup -3} under a pressure 1 atm in air) is realised in the volume discharge stage. The volume discharge is formed due to preionisation of the discharge gap by fast electrons accelerated due to amplification of the electric field in the cathode region and in the gap. In a nonuniform electric field, volume discharge is realised under a quasistationary voltage from 10 to 180 kV across the gap, at a pulse repetition rate of up to 160 Hz and for various discharge gap geometries. (active media)
- OSTI ID:
- 21470641
- Journal Information:
- Quantum Electronics (Woodbury, N.Y.), Vol. 34, Issue 11; Other Information: DOI: 10.1070/QE2004v034n11ABEH002658; ISSN 1063-7818
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
AIR
AMPLIFICATION
ARGON
CATHODES
ELECTRIC FIELDS
ELECTRIC POTENTIAL
ELECTRONS
HELIUM
NITROGEN
POWER INPUT
PRESSURE RANGE MEGA PA 10-100
PULSES
XENON
ELECTRODES
ELEMENTARY PARTICLES
ELEMENTS
FERMIONS
FLUIDS
GASES
LEPTONS
NONMETALS
PRESSURE RANGE
PRESSURE RANGE MEGA PA
RARE GASES