Abstract
Discharge parameters have been investigated experimentally and theoretically for a high-pressure, ultraviolet-preionized, transversely excited CO2 laser. The theoretical model including the excitation circuitry is presented which predicts the discharge performance at pressure ranges of 2–10 atm in a satisfactory manner. The operating E/N and discharge impedance in a quasi-steady field were studied by accurately measuring the voltage-current waveforms; E is the electric field strength and N the gas number density. The electron transport coefficients have been found to be a function of the pressure versus the change of the measured voltage waveforms relating to that pressure. The theoretical results treating the transport coefficient as a function of the pressure were in very good agreement with the experimental results.
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