Optical characteristics and parameters of a gas discharge plasma based on a mixture of mercury dibromide vapor and helium

Малинина, А. А.; Guivan, N. N.; Шуаибов, А. К.

doi:10.1007/s10812-009-9245-4

Cited by 3 publications

(4 citation statements)

References 13 publications

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“…where A = Hg or X, 𝐾 HgX = 0.6×10 24 cm − 3 , 𝐷 HgX = = 0.48 eV [18], 𝐾 X2 = 10 24 cm −3 , 𝐷 X2 = 1.97 eV [18], and 𝑇 is the gas temperature measured in Kelvins. Reactions 1, 10, and 11 dominate in the electric discharge plasma [1,6,7,9,10,13]. Making allowance only for them, the radiation intensity 𝐼 for the transition HgX(B) → HgX(X) in the quasistationary approximation is described by the formula…”

Section: Kinetics Of Heavy Particlesmentioning

confidence: 99%

“…Excimer lamps (excilamps) are sources of radiation in the UV and visible spectral ranges. They have been intensively studied within the last three decades [1][2][3][4][5][6][7][8][9][10][11][12][13]. In order to create a working medium of excilamps, the gas discharges similar to discharges in excimer lasers are used [1].…”

Section: Introductionmentioning

confidence: 99%

“…The working mixture HgX 2 -M, where X = Br or Cl, and M = Ne, He, or Xe, is excited with pulse-periodic discharges. Typical kinetic models [6,9,10,13], which involve the kinetics of a gas discharge plasma, dissociative excitation of HgX 2 molecules, and deactivation and radiation emission of HgX(B) molecules cannot explain the experimental dependence of the energy emitted by HgX(B) molecules on the partial pressure of HgX 2 . In experiments, when the HgBr 2 vapor pressure, 𝑃 HgX 2 , increased from a few tenths to 0.5-1 kPa, the emission intensity 𝐼 grew by an order of magnitude.…”

Section: Introductionmentioning

confidence: 99%

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Emission Kinetics Of A HgBr Discharge Excilamp

2015

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A kinetic model of the working medium of a discharge excilamp on the B-X transition of mercury bromide, HgBr, excimer molecules has been proposed. The model explains the nonmonotonic dependence of the excilamp radiation intensity on the partial pressure of mercury dibromide molecules by the attachment of electrons to these molecules. HgBr(X) molecules were found to transit into the HgBr(B) excited state due to their collisions with high-energy electrons, thereby improving the excilamp characteristics. K e y w o r d s: excilamp, gas discharge plasma, kinetics, excimer radiation, mercury halides.

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Section: Kinetics Of Heavy Particlesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Emission Kinetics Of A HgBr Discharge Excilamp

2015

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“…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].…”

Section: Introductionmentioning

confidence: 99%

Diagnostics of Optical Characteristics and Parameters of Gas-Discharge Plasma Based on Mercury Diiodide and Helium Mixture

Малинина¹

2015

OJAppS

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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. Regularities 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 2 1 2 В + Σ) 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.

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Experimental and theoretical characterization of a multi-wavelength DBD-driven exciplex lamp operated with mercury bromide/rare gas mixtures

Гуйван

Малинина

Brablec

2011

J. Phys. D: Appl. Phys.

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Emission spectra from an atmospheric-pressure dielectric barrier discharge (DBD) with HgBr2/He or HgBr2/Xe/Kr mixtures, as well as the electrical characteristics, were investigated at repetition frequencies of sinusoidal voltage pulses up to 125 kHz. In the spectra, the study revealed radiation from HgBr(B–X, C–X) exciplex molecules, atomic lines of mercury and rare gases, and in mixtures with xenon, radiation of XeBr(B–X, B–A) exciplex molecules. Regularities in the spectral characteristics of the radiation from the gas-discharge plasma were discussed. The electron energy distribution function, the specific energy lost in the processes involving electrons, the electron temperature and density, and the rate constants of elastic and inelastic electron scattering by the components of the working mixture were calculated as functions of the reduced field E/N. The high-frequency atmospheric-pressure barrier discharge in mixtures of mercury dibromide with gases can be used in multi-wavelength exciplex lamps, operating in the UV and visible regions.

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Optical characteristics and parameters of a gas discharge plasma based on a mixture of mercury dibromide vapor and helium

Cited by 3 publications

References 13 publications

Emission Kinetics Of A HgBr Discharge Excilamp

Emission Kinetics Of A HgBr Discharge Excilamp

Diagnostics of Optical Characteristics and Parameters of Gas-Discharge Plasma Based on Mercury Diiodide and Helium Mixture

Experimental and theoretical characterization of a multi-wavelength DBD-driven exciplex lamp operated with mercury bromide/rare gas mixtures

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