New values of α/p0 in pure neon obtained with the luminous-flux method

Buursen, C.G.J.; Hoog, F. J. de; Montfort, L.H. van

doi:10.1016/0031-8914(72)90234-0

Cited by 14 publications

(3 citation statements)

References 18 publications

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“…Bei den vorliegenden experimentellen Ergebnissen [1][2][3][4][5][6][7][8] fehlen weitgehend Messungen der charakteristischen Energie [s.a. Gl. (4)], des Diffusions-und Anregungskoeffizienten.…”

Section: Introductionunclassified

Elektronentransport in nichtthermischen Edelgasplasmen

Lehrke¹,

Müller²

1976

Zeitschrift Für Naturforschung A

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Transport of Electrons in Non-Thermal Noble Gas PlasmaFor the transport of electrons in a non-thermal, weakly ionized plasma an analytical model and a detailed numerical calculation is presented. The following transport coefficients: mean energy, characteristic energy, mobility, diffusion coefficient, excitation and ionization coefficient for He, Ne, Ar, Kr, Xe are calculated in the region of reduced electric field 0.01 V/cm Torr < Elp < 100 V/cm Torr. The parameters of the model are developed using the existing experimental and our numerical data. With increasing £/p the dominant energy loss of the electrons changes from elastic to inelastic collisions and here from constant to increasing effective excitation energy. Three model regions of Elp result, in which the transport coefficients can be described as a power of £/p. The data presented here provide a starting point for further investigations of similarity rules and models of nonthermal plasmas.

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Section: Introductionunclassified

Elektronentransport in nichtthermischen Edelgasplasmen

Lehrke¹,

Müller²

1976

Zeitschrift Für Naturforschung A

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“…Consequently, the asymmetries disclosed by the present work may provide a possible explanation for the discrepancies which occur between the 'luminous flux' method of determining electron transport coefficients (Buursen et al 1972) and the older approaches which make no assumptions about the spatial variation of the electron pulse. Further insight into this problem should be obtained when the present program is extended to include the effects of energy-dependent elastic and inelastic collisions.…”

Section: ·075mentioning

confidence: 74%

Computer Simulation of an Electron Swarm at low E/p in Helium

McIntosh¹

1974

Aust. J. Phys.

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A computer simulated electron swarm at E/P293 = 1·0 V cm -1 tore 1 in a model gas has been used to examine the validity of a recent theory of electron drift and diffusion. The computed results are in agreement with well-established theories for the electron energy distribution function, drift velocity and transverse diffusion coefficient, and confirm that, for a constant momentum transfer cross section, the longitudinal diffusion coefficient is approximately half the transverse coefficient. However, significant differences have been found between the computed swarm and the predictions of the theory of Huxley (1972). In particular, over the time scale considered, the electron swarm is not symmetric about its centroid but is spatially anisotropic in such a way that it could appropriately be described as 'pear shaped'.

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“…Space charge effects and wall voltage are approximately negligible. The deterinination of the primary Townsend coefficient of direct ionization was performed hp nienns of the a/po(E/po)-dependence, as given by BUURSEN [21].…”

Section: Space Time Development Of the Quasiglow And Continuous L O D Ementioning

confidence: 99%

Formation of Discharges between Glass Insulated Electrodes in Ne + 1% N₂ Mixtures. II. Frequency Dependence and Discharge Modes

Lange

Stern²

1983

Contrib Plasma Phys

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SummaryDischarges between glazed electrodes for p = 2.67 kPa Ne + 1% N, and pd = 1.3 kPa cm (p = gas pressure, d = electrode dietance) are investigated. They are snetsined by a sine wave voltage of variable frequency 1. Measurements of the space time structure of the radiation emimion provide information of the build up and quenching of discharges and of the structure of the fully developed ac-discharge.It is shown that the discharge types for the different values of frequency and amplitude of the sine wave sustaining voltage are dynamically developed Townsend and glow discharges. For f 5 4 kHz the optical structure and its temporal behaviour largely depends on the increment of the Sustaining voltage. For f 2 20 kHz the axial structure of radiation emission is modified by the influence of consecutive discharges due to residual ions (f 20 kEz) and mehatable Ne(3PI)-atoms (f > 20 kHz) existing for several periods of sine wave. The Penning effect of metastable Ne-atoms with N, molecules then produces start electrons for each discharge in a sequence which improve the initial conditions for the breakdown. Relations between space time structure and breakdown voltage as a function of frequency f are discussed.

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New values of α/p0 in pure neon obtained with the luminous-flux method

Cited by 14 publications

References 18 publications

Elektronentransport in nichtthermischen Edelgasplasmen

Elektronentransport in nichtthermischen Edelgasplasmen

Computer Simulation of an Electron Swarm at low E/p in Helium

Formation of Discharges between Glass Insulated Electrodes in Ne + 1% N₂ Mixtures. II. Frequency Dependence and Discharge Modes

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New values of α/p0 in pure neon obtained with the luminous-flux method

Cited by 14 publications

References 18 publications

Elektronentransport in nichtthermischen Edelgasplasmen

Elektronentransport in nichtthermischen Edelgasplasmen

Computer Simulation of an Electron Swarm at low E/p in Helium

Formation of Discharges between Glass Insulated Electrodes in Ne + 1% N2 Mixtures. II. Frequency Dependence and Discharge Modes

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Formation of Discharges between Glass Insulated Electrodes in Ne + 1% N₂ Mixtures. II. Frequency Dependence and Discharge Modes