A single pulse from a neodymium laser is used to initial electrical breakdown in glasses which accumulate and preserve a space charge induced by a beam of rapid monoenergetic electrons. Laser initiation permits use of high-speed recording apparatus and study of the initial stage of electrical breakdown in the charged glasses. A time delay in electrical breakdown relative to the initiating optical radiation was observed and measured, corresponding to the time of formation of a conductive channel between the region of space-charge localization and the specimen surface. Growth rates of the conductive channel are determined for surface and volume initiation, and possible mechanisms of laser initiation are considered.
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Akishin, A.I., Zelikin, N.V., Kornienko, L.S. et al. Laser initiation and early stages of electrical breakdown in charged glasses. Soviet Physics Journal 31, 579–583 (1988). https://doi.org/10.1007/BF00917553
- Growth Rate
- Time Delay
- Space Charge