Microwave Diagnostics of the Electron Density in Molecular Mixture Plasmas

Gundermann, S.; Loffhagen, Detlef; Wagner, H. Gg.; Winkler, R.

doi:10.1002/1521-3986(200101)41:1<45::aid-ctpp45>3.0.co;2-w

Cited by 8 publications

(15 citation statements)

References 13 publications

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“…The values for the four different currents are given in table 2. The good agreement of the calculated temporal development and the measured behaviour for 2 mA, where the electron density from Gundermann et al [27] was used in the model, proved the validity of the used simple reaction scheme. Since the equilibrium concentration of CO depends only slightly on the electron density, the assumption of a fixed gas temperature would not seriously affect the results of the model.…”

Section: Results Of Modellingsupporting

confidence: 54%

“…In figure 8, this value is shown as a dashed line to be compared with the summation of the measured concentrations Table 3. Rate equations and rate coefficients of electron impact dissociation, wall recombination and thermally activated chemical reactions used to model the chemical conversion of CO 2 (n, number of reacting species; n e , electron density) [26,27] of CO and CO 2 . The same density was used for the collision partner M in the calculation of the rate coefficients.…”

Section: Equilibriummentioning

confidence: 99%

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Absorption spectroscopic studies of carbon dioxide conversion in a low pressure glow discharge using tunable infrared diode lasers

Hempel

Röpcke

Miethke

et al. 2002

Plasma Sources Sci. Technol.

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The time and spatial dependence of the chemical conversion of CO 2 to CO were studied in a closed glow discharge reactor (p = 50 Pa, I = 2-30 mA) consisting of a small plasma zone and an extended stationary afterglow. Tunable infrared diode laser absorption spectroscopy has been applied to determine the absolute ground state concentrations of CO and CO 2. After a certain discharge time an equilibrium of the concentrations of both species could be observed. The spatial dependence of the equilibrium CO concentration in the afterglow was found to be varying less than 10%. The feed gas was converted to CO more predominantly between 43% and 60% with increasing discharge current, forming so-called quasi-equilibrium states of the stable reaction products. The formation time of the stable gas composition also decreased with the current. For currents higher than 10 mA the conversion rate of CO 2 to CO was estimated to be 1.2 × 10 13 molecules J −1. Based on the experimental results, a plasma chemical modelling has been established.

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Section: Results Of Modellingsupporting

confidence: 54%

Section: Equilibriummentioning

confidence: 99%

Absorption spectroscopic studies of carbon dioxide conversion in a low pressure glow discharge using tunable infrared diode lasers

Hempel

Röpcke

Miethke

et al. 2002

Plasma Sources Sci. Technol.

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“…MCRS measurements [21,22] have been used in other studies to determine the electron density in radio-frequency (RF) plasmas [23][24][25], discharge tubes [26,27] and recently in EUV-induced plasmas [19]. Since the method is already extensive described in these publications, we suffice with a brief description of the key concepts only.…”

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confidence: 99%

Dynamics of the spatial electron density distribution of EUV-induced plasmas

Horst¹,

Beckers²,

Osorio³

et al. 2015

J. Phys. D: Appl. Phys.

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published version features the final layout of the paper including the volume, issue and page numbers. Link to publication General rightsCopyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.• Users may download and print one copy of any publication from the public portal for the purpose of private study or research. • You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal.If the publication is distributed under the terms of Article 25fa of the Dutch Copyright Act, indicated by the "Taverne" license above, please follow below link for the End User

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“…The electron density is measured with a non-intrusive method known as microwave cavity resonance spectroscopy (MCRS). The method has already been extensively applied to study various types of plasmas in other publications [8,9,[12][13][14][15][16][17]. Since MCRS is described in detail in these publications, we suffice with a brief summary here.…”

Section: Mcrs Set-upmentioning

confidence: 99%

Exploring the electron density in plasma induced by EUV radiation: I. Experimental study in hydrogen

Horst

Beckers

Osorio

et al. 2016

J. Phys. D: Appl. Phys.

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DOI to the publisher's website.• The final author version and the galley proof are versions of the publication after peer review.• The final published version features the final layout of the paper including the volume, issue and page numbers. Link to publication General rightsCopyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.• Users may download and print one copy of any publication from the public portal for the purpose of private study or research. • You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal.

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Microwave Diagnostics of the Electron Density in Molecular Mixture Plasmas

Cited by 8 publications

References 13 publications

Absorption spectroscopic studies of carbon dioxide conversion in a low pressure glow discharge using tunable infrared diode lasers

Absorption spectroscopic studies of carbon dioxide conversion in a low pressure glow discharge using tunable infrared diode lasers

Dynamics of the spatial electron density distribution of EUV-induced plasmas

Exploring the electron density in plasma induced by EUV radiation: I. Experimental study in hydrogen

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