Temporal characteristics of emission of working mixtures of a HgBr/HgCl excimer lamp

Malinin, A. N.; Guivan, N. N.; Shimon, L. L.; Polyak, A. V.; Zubrilin, N. G.; Shchedrin, A. I.

doi:10.1134/1.1429697

Cited by 8 publications

(10 citation statements)

References 7 publications

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“…These lamps are attractive due to their narrow-band short-wavelength emission suitable for intense illumination of large areas. In this paper, we study a mercurybromide dielectric-barrier-discharge (DBD) lamp related to excilamps [7][8][9][10][11][12]. The blue-green radiation of this lamp can find applications in scientific research, biotechnology, photonics, medicine, and can also be used to manufacture gasdischarge display panels [8].…”

Section: Introductionmentioning

confidence: 99%

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Direct electron-impact mechanism of excitation of mercury monobromide in a double-pulse dielectric-barrier-discharge HgBr lamp

Datsyuk

Izmaǐlov

Naumov

et al. 2016

Plasma Sources Sci. Technol.

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In a nonequlibrium plasma of a gas-discharge HgBr lamp, the terminal electronic state of the HgBr(B-X) radiative transition with a peak wavelength of 502 nm remains populated for a relatively long time and is repeatedly excited to the B state in collisions with plasma electrons. This transfer of the HgBr molecules from the ground state X to the excited state B is the main mechanism of formation of the light-emitting molecules especially when the lamp is excited by double current pulses. According to our simulations, due to the electron-induced transitions between HgBr(X) and HgBr(B), the output characteristics of the DBD lamp operating in a double-pulse regime are better than those of the lamp operating in a single-pulse regime. In the considered case, the peak power is calculated to increase by a factor of about 2 and the lamp efficiency increases by about 50%.

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Section: Introductionmentioning

confidence: 99%

“…In the DBD lamps of [7,10,11], gaseous mixtures were excited by sequences of two or three pulses of the current and, respectively, the HgBr emission had two or three peaks. The amplitude of the first emission peak was noticeably lower than the amplitudes of the second and third peaks.…”

Section: Introductionmentioning

confidence: 99%

Direct electron-impact mechanism of excitation of mercury monobromide in a double-pulse dielectric-barrier-discharge HgBr lamp

Datsyuk

Izmaǐlov

Naumov

et al. 2016

Plasma Sources Sci. Technol.

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“…Although emission of HgBr (B → X) appears at λ ~ 400 nm, most of the emission intensity is concentrated in the range 512-475 nm. The shape of the band and its half-width (15-16 nm) are analogous to the corresponding transition B → X in mercury monohalides in creating a barrier discharge in large quartz tubes [1][2][3][5][6][7][8][9][10][11][12]. kPa and from 0.1 kPa to 0.8 kPa respectively.…”

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confidence: 99%

“…The behavior of the dependences of the emission power of the HgBr * exciplexes on the partial pressure of the mercury dibromide vapor and the optimal value of the partial pressure of the mercury dibromide vapor are determined by the kinetics of the processes leading to excitation and quenching of the B 2 Σ 1 ⁄ 2 + state of the HgBr * molecules, the values of the rate constants of process (1), and the efficiency of the quenching process:…”

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confidence: 99%

“…Data on the optical characteristics and parameters of a gas discharge plasma based on mixtures of halogen-containing molecules and a gas are an important part of diagnostics and optimization of the spectral and energy characteristics of exciplex emission sources [1,2]. Such characteristics in a gas discharge plasma produced by a barrier discharge at atmospheric pressure (BD gas discharge plasma) for mixtures of mercury dibromide vapor and gases have been studied in [3][4][5][6][7][8][9][10][11][12].…”

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

2009

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We present the results of studies of the optical characteristics and parameters of a gas discharge plasma produced by a barrier discharge at atmospheric pressure, based on a mixture of mercury dibromide vapor and helium (the working medium of a small (emitting area 8 cm 2 ) exciplex gas discharge emitter). An average emission power of 70 mW (λ max = 502 nm) was achieved for pump pulse repetition frequency 6 kHz, voltage pulse amplitude 2.3 kV, and current pulse amplitude 8 A of duration ~100 nsec. We established the plasma parameters: the electron energy distribution functions, the transport characteristics, the discharge power losses per unit pressure going toward electron processes, the electron concentration and temperature, and also the rate constants for processes of elastic and inelastic scattering of electrons by the components of the working mixture as a function of the parameter E/N, where E is the electric field strength and N is the total concentration of mercury dibromide molecules and helium atoms.

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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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Temporal characteristics of emission of working mixtures of a HgBr/HgCl excimer lamp

Cited by 8 publications

References 7 publications

Direct electron-impact mechanism of excitation of mercury monobromide in a double-pulse dielectric-barrier-discharge HgBr lamp

Direct electron-impact mechanism of excitation of mercury monobromide in a double-pulse dielectric-barrier-discharge HgBr lamp

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

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

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