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The Effect of Unpolarized Laser Radiation on Organic Dielectrics

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Abstract

Unpolarized radiation from the active species of a copper vapor laser changed the conductivity, dielectric permittivity, and the loss tangent of 14 organic dielectrics (polymers) including PMMA and polyethylene- and poly(vinyl chloride)-based materials. Light pulses of 20 ns duration, mostly at a wavelength of 510.6 nm, illuminated an entire sample by a large spot for 3–5 s, so that the radiation intensity per pulse at the surface was as high as 1.7–8.6 kW/cm2. After irradiation, the conductivity of all materials increased. The electric parameters irreversibly varied in some dielectrics, whereas slow (of many hours) relaxation back to the initial parameters or to new equilibrium values was observed in other materials.

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Authors and Affiliations

  1. Kabardino-Balkar State University, ul. Chernyshevskogo 173, Nalchik, 360004, Russia

    A. P. Savintsev

  2. Institute of Applied Mathematics and Automation, ul. Shortanova 69a, Nalchik, 360000, Russia

    A. I. Temrokov

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  1. A. P. Savintsev
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  2. A. I. Temrokov
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Savintsev, A.P., Temrokov, A.I. The Effect of Unpolarized Laser Radiation on Organic Dielectrics. High Energy Chemistry 36, 344–348 (2002). https://doi.org/10.1023/A:1020202802078

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