Determination of the relative, radial density distribution of the 2s5 atoms in a low pressure d.c. discharge of neon by means of fluorescence measurements

Steenhuysen, L.W.G.; Brugh, H. Aan de

doi:10.1016/0378-4363(75)90030-3

Cited by 4 publications

(1 citation statement)

References 7 publications

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“…STEENHUYSEN et AAX DE BRUGH[6] ont observe un effet de contraction analogue sur le niveau Ne('P,) 5 Torr. Leur explications s'appuie sur l'existence d'une variation radiale de la tenipCrature Blectronique.…”

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Distribution Radiale de la Densité des Atomes Métastables dans les Plasmas Produits par un Champ Electrique Continu ou de Haute‐Fréquence

Pantel

Ricard

Moisan

1983

Contrib Plasma Phys

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The radial density distribution of metastable Ar(SP,) and resonant Ar(lP,) atoms L determined experimentally in two types of electrical discharges of cylindrical shape: the positive column plasma of a Dc discharge and the plasma produced by an electromagnetic surface wave. The exitation and deexcitation rates for Ar(SP,) by electron collisions are determined as a function of radius from the measured radial population density profile using a population density balance equation. These rate coefficients are obtained for various electron density values on the axis. The published values for these coefficients in the positive column plasma assume that they are independent of the discharge current. In this work, it is shown that these coefficients actually decrease 88 the electron density increasetl. I n a more general way, the results obhined indicate that the examination of the radial density distributions of exited atoms is a powerful method for determining the kinetics of their creation and destruction.

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Distribution Radiale de la Densité des Atomes Métastables dans les Plasmas Produits par un Champ Electrique Continu ou de Haute‐Fréquence

Pantel

Ricard

Moisan

1983

Contrib Plasma Phys

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Photoionization of excited atoms in dc gas discharges by low-intensity light and its analogy to gas-breakdown with high-intensity lasers

Kopeika

Eytan

Kushelevsky

1979

Journal of Applied Physics

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Experimental and theoretical study of the radial density distribution of metastable atoms in a dc glow discharge in neon

2017

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Radial distributions of the number density of metastable atoms in the positive column of a dc glow discharge in neon were studied both experimentally and theoretically in a wide range of gas pressures (0.1–50 Torr) and discharge currents (10–40 mA, for gas pressures of 0.1–10 Torr, and 20–100 mA, for the gas pressure of 50 Torr). Measurements were performed in a glass discharge tube 4 cm in diameter using the optical absorption technique. It was found that, at pressures of 0.1–1 Torr, the radial profiles of the number density of metastable atoms are almost independent of a discharge current value. At higher pressures, noticeable narrowing of the profiles with discharge current was observed; at a pressure of 50 Torr, measurements were performed up to the jump-like transition of the positive column from the diffuse form to the constricted one. Theoretical studies of the discharge plasma parameters under experimental conditions were carried out in the framework of a one-dimensional (along the tube radius) discharge model. For the case of the diffuse form of the discharge, the results of simulations appeared to be in a reasonable agreement with the experimental data.

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Determination of the relative, radial density distribution of the 2s5 atoms in a low pressure d.c. discharge of neon by means of fluorescence measurements

Cited by 4 publications

References 7 publications

Distribution Radiale de la Densité des Atomes Métastables dans les Plasmas Produits par un Champ Electrique Continu ou de Haute‐Fréquence

Distribution Radiale de la Densité des Atomes Métastables dans les Plasmas Produits par un Champ Electrique Continu ou de Haute‐Fréquence

Photoionization of excited atoms in dc gas discharges by low-intensity light and its analogy to gas-breakdown with high-intensity lasers

Experimental and theoretical study of the radial density distribution of metastable atoms in a dc glow discharge in neon

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