Space-charge influence on non-linear beam defocusing

Research outputpeer-review

Abstract

Some of the investigations in the past few years have shown that organic liquid dielectric, containing space charge have structuralized regions. The report contains results of experimental investigation of nonlinear optoelectrohydrodynamics (OEGD) effect, which appears under the transmission of a helium-neon laser beam through low-conducting liquids as a result the light absorption and heating of translucent liquid leads to spontaneous defocusing of laser beam, a laser power exceeding 1 mVt. Effect is non-excited liquid is isotropic. Effect has threshold tension being 1 kV/sm. Under the effect of the electric field of 1 kV/sm, on liquid, defocusing is decreasing, space anisotropism arises due to the space electric charge and electrohydrodynamic currents. This influence of electrohydrodynamic (EHD) currents is very significant and is brought about by connective heat conduction. The separate hydrodynamic and charge effects specific experiments were carried out in the system of partially isolated electrodes. Anisotropism of OEGD-effects has been established under these conduction. It has been shown that liquid acquires anisotropic properties due to structured molecules in the ionic field, forming space charge. Anisotropic properties of low-conducting liquids, in the absence of EHD-currents are being preserved during several hours after voltage is off.

Original languageEnglish
Title of host publicationProceedings of the 1999 68th Annual Conference on Electrical Insulation and Dielectric Phenomena
Pages170-173
Number of pages4
Volume1
Publication statusPublished - 1 Dec 1998
Event67th IEEE Annual Conference on Electrical Insulation and Dielectric Phenomena - Atlanta, GA, USA
Duration: 25 Oct 199828 Oct 1998

Publication series

NameConference on Electrical Insulation and Dielectric Phenomena (CEIDP), Annual Report
ISSN (Print)0084-9162

Conference

Conference67th IEEE Annual Conference on Electrical Insulation and Dielectric Phenomena
CityAtlanta, GA, USA
Period25/10/9828/10/98

Scopus subject areas

  • Electrical and Electronic Engineering
  • Industrial and Manufacturing Engineering
  • Building and Construction

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