Title :
The impact ionization and breakdown strength in atomic liquids with molecular impurities
Author_Institution :
Inst. for High Temp., Acad. of Sci., Moscow, USSR
Abstract :
A theory of the ionization avalanche development is given which makes it possible to calculate ionization coefficient and breakdown voltage for planar geometry. The theory can be applied both to pulse electric and to high frequency (laser induced) breakdown. It is pointed out that the ionization electron avalanche development determines the electric breakdown strength of high-electron-mobility liquids Ar, Kr, and Xe. The DC and laser-induced breakdown strengths of these liquids are lower than low density gas extrapolation values. This difference is the consequence of a depression of the inelastic electron energy losses in liquids. The presence of molecular impurities leads to additional electron energy losses due to excitation of molecule vibrations. It results in an ionization coefficient decrease and in growth of the breakdown voltage of the solutions
Keywords :
argon; dielectric properties of liquids and solutions; electric breakdown of liquids; electric strength; impact ionisation; inert gases; ionisation of liquids; krypton; xenon; Ar; Kr; Xe; atomic liquids; breakdown strength; breakdown voltage; excitation of molecule vibrations; high frequency breakdown; high-electron-mobility liquids; impact ionization; inelastic electron energy losses; inert gas liquids; ionization avalanche development; ionization coefficient; laser induced breakdown; molecular impurities; planar geometry; Atomic beams; Electric breakdown; Electrons; Energy loss; Gas lasers; Geometrical optics; Impact ionization; Laser theory; Liquids; Optical pulses;
Conference_Titel :
Properties and Applications of Dielectric Materials, 1991., Proceedings of the 3rd International Conference on
Conference_Location :
Tokyo
Print_ISBN :
0-87942-568-7
DOI :
10.1109/ICPADM.1991.172051
