Time evolution of discharge current and light intensity in a PDP with Ne-H<sub>2</sub>gas mixtures

Musa, G.; Baltog, A.; Ciobotaru, L. C.; Chiru, P.; Lungu, C. P.; Raiciu, E.; Ricard, A.

doi:10.1051/epjap:2004193

Cited by 4 publications

(3 citation statements)

References 7 publications

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“…The wavelengths corresponding to experimental results are highlighted in bold type and are taken from [5][6][7]. There is, though, a large series of other wavelengths that have a high probability to be M-lines (predicted by computation) but they have not yet been found experimentally.…”

Section: Calculation Results and Discussionmentioning

confidence: 99%

“…In the course of previous work aimed at studying dielectric barrier discharges (DBDs) in multiple gas mixtures, a new physical effect was observed over 20 years ago at the National Institute for Lasers, Plasma and Radiation Physics (Bucharest) [1][2][3][4][5]. It consisted of the spectacular exacerbation of the emission intensity of a single line in the visible region of certain gas discharge mixtures.…”

Section: Introductionmentioning

confidence: 99%

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The kinetics of monochromatization of plasma light emission

Surdu-Bob

Musa

2008

J. Phys. D: Appl. Phys.

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This paper is concerned with the monochromatization of the visible spectrum of rare gas discharges upon addition of either oxygen, hydrogen or chlorine gas: the M-effect. This phenomenon, observed over 20 years ago at the National Institute for Lasers, Plasma and Radiation Physics (Bucharest), is clearly explained here for the first time. The explanations contain references to all most relevant previous work on this subject. Assuming that the exacerbation of a given emission line results from the collisional interaction between an electropositive gas (the rare gas) and an appropriate electronegative gas, a general method, based on calculation of the energy balance of their excited energy levels, is developed for determining the gas mixtures for which the M-effect can be obtained, along with the corresponding wavelength of the monochromatic emission. These calculations show that the M-effect is highly probable in discharges combining inert gases with oxygen or hydrogen. The experimental results are in perfect agreement with these calculations. The M-effect is an important fundamental effect in physics and has much potential for applications requiring monochromatic light sources for both research and industry.

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Section: Calculation Results and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The kinetics of monochromatization of plasma light emission

Surdu-Bob

Musa

2008

J. Phys. D: Appl. Phys.

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“…Over the last decades our research group has been studying the M-effect in different configuration system (e. q. dielectric barrier discharge -DBD) in steady flowing gas or established discharge pressure, with different power supply sources, giving an overview of this phenomenon in electronegative gas added in only one noble gas [8]- [12].…”

Section: Introductionmentioning

confidence: 99%

Multiple M‐Effect Signal in Noble Gases and Hydrogen Mixture Discharge

Vladoiu

Contulov

Ciupină

et al. 2010

Contrib. Plasma Phys.

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Key words Monochromatization -effect (M-effect), three body collision, gas mixture discharges. PACS 42.79.Y, 52.20.HvThe M-effect (monochromatization-effect) is a powerful process which can give high intensity monochromatic spectra with a certain wavelength depending on the type of used gas mixtures to generate the plasma state. The effect consists in the emission of a single spectral line emerging from plasma under specific experimental conditions involving one electropositive gas and one electronegative gas mixture. For example, in the case of Ne-H2 mixture, a clear monochrome radiation was obtained, corresponding to the λNe=585.3 nm wavelength at 2p1-1s2 transition in the Paschen notation, the pressures ranging between 10-100 torr. In this paper we prove the general character of this effect, i.e. if the optical emission spectra (OES) reduced to selective lines can be noticed also in other multiple gas mixture discharges. The Ne-Ar-Xe mixture discharges with different percentages of H2 as electronegative gas added in has been investigated. The triple M-effect, means three specific monochromatic lines, could be revealed in the OES at 50 % of H2 addition in Ne-Ar-Xe mixture.

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