Abstract
The results of diagnostics of spectral, temporal and energy characteristics of the radiation of gas-discharge plasma in a mixture of mercury diiodide vapor with helium in the spectral range of 350 - 900 nm, and the plasma parameters in the range of reduced electric field E/N = 1 - 100 Td are presented. The plasma is created in the barrier discharge device with a cylindrical aperture. The electrodes are placed 0.2 m in length at a distance of 0.015 m. The amplitude of the pump pulse, the duration and frequency were 20 - 30 kV, 150 ns and 1 - 20 kHz, respectively. Radiation in the visible region of the spectrum of mercury monoiodide exciplex molecule is revealed. Regu larities in the optical characteristics of the plasma, depending on the partial pressures of the components of the mixture, the electron energy distribution function, mean electron energy, specific losses of discharge power on the process of dissociative excitation of mercury monoiodide (state B2Σ+1/2) molecules as well as the rate constant of dissociative excitation of mercury monoiodide molecules in working mixture depending on the given reduced electric field are established.
Highlights
Gas-discharge plasma in mixtures of mercury diiodide vapor (HgJ2) is a working medium of exciplex sources ofHow to cite this paper: Malinina, A. (2015) Diagnostics of Optical Characteristics and Parameters of Gas-Discharge Plasma Based on Mercury Diiodide and Helium Mixture
Interest in the study and creation of exciplex sources of spontaneous radiation of the visible spectrum is caused by the need to determine the quantitative characteristics of various processes occurring in their working mediums, creation of visible light source more effective than the existing ones, which would emit in the range of photosynthetic active radiation (PAR) and the largest plant sensitivity of biomolecules to solve a number of practical problems
The emission spectra of gas-discharge plasma were investigated in the field of partial vapor pressure of mercury diiodide 2 - 100 Pa and helium 120 - 200 kPa
Summary
Gas-discharge plasma in mixtures of mercury diiodide vapor (HgJ2) is a working medium of exciplex sources ofHow to cite this paper: Malinina, A. (2015) Diagnostics of Optical Characteristics and Parameters of Gas-Discharge Plasma Based on Mercury Diiodide and Helium Mixture. Interest in the study and creation of exciplex sources of spontaneous radiation of the visible spectrum is caused by the need to determine the quantitative characteristics of various processes occurring in their working mediums, creation of visible light source more effective than the existing ones, which would emit in the range of photosynthetic active radiation (PAR) and the largest plant sensitivity of biomolecules to solve a number of practical problems These are tasks such as the intensive light therapy of humans and animals, effective light control of the production process (photosynthesis, growth, development, etc.) of plants and phytocenoses [6]-[8]. For the most part, the main attention was focused on gas-discharge plasma on mixture of mercury dibromide vapor with gases: helium, neon, argon, xenon, krypton, nitrogen, and sulfur hexafluoride [9]-[17]
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