Probe determination of the electron energy distribution in a Hg-Ar low-pressure positive column

Wani, Koichi

doi:10.1063/1.346083

Cited by 5 publications

(6 citation statements)

References 11 publications

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“…In the past, several authors reported the determination of the electron density and temperature with the aid of a Langmuir probe. [1][2][3] The main disadvantage of these measurements is that Langmuir probes disturb the plasma at the very position the plasma quantities are being measured. Furthermore, a probe does not directly measure the electron density and temperature.…”

Section: Introductionmentioning

confidence: 99%

Thomson scattering in a low-pressure argon mercury positive column

Bakker

Kroesen

2000

Journal of Applied Physics

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The electron density and the electron temperature in a low-pressure argon mercury positive column are determined using Thomson scattering. Special attention has been given to the stray light reduction in the Thomson scattering setup. The results are obtained in a discharge tube with a 26 mm diam, 5 mbar of argon, a mercury pressure in between 0.14 and 1.7 Pa, and an electric current ranging from 200 to 400 mA. The systematic error in the electron density is 15%, the statistical error is 25%. The total error in the electron temperature is 10%–20%.

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Section: Introductionmentioning

confidence: 99%

Thomson scattering in a low-pressure argon mercury positive column

Bakker

Kroesen

2000

Journal of Applied Physics

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“…10. The loss of electron energy in inelastic collisions of electrons with mercury atoms in the ground state is not compensated by the energy gain in the reverse process.…”

Section: Resultsmentioning

confidence: 99%

Thomson scattering in a low-pressure neon mercury positive column

Bakker

Kroesen

2001

Journal of Applied Physics

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The electron density and the electron temperature in a low-pressure neon mercury positive column are determined using Thomson scattering. Special attention has been given to the stray light reduction in the Thomson scattering setup. The results are obtained in a discharge tube with a 26 mm diam, 10 mbar of neon, a mercury pressure inbetween 0.14 and 0.85 Pa, and an electric current ranging from 100 to 400 mA. The systematic error in the electron density is 15%–45%, the statistical error is 25%–35%. The total error in the electron temperature is 15%–35%.

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“…The electron density n e of the plasma in similar cases is given by the following expressions [3,11]:…”

Section: Gas Supplier Vaccum Systemmentioning

confidence: 99%

“…Because of the widespread applications in fluorescent lamps and gas lasers, low-pressure gas discharges have been investigated intensively [3]. The electron energy distribution function (EEDF) is of fundamental importance for almost all aspects of gas discharges.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, several models have been employed to find the EEDF for the PC in low-pressure rare gas discharges [4][5][6]. However, the most commonly used method to determine the EEDF in low-pressure discharges [3] is the Druyvesteyn second differential method. In order to determine the electron distribution, it is necessary to find, experimentally, the second derivative of the electron probe current.…”

Section: Introductionmentioning

confidence: 99%

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Electron energy distribution function in the positive column of a neon glow discharge using the black wall approximation

Al‐Hawat

Naddaf

2005

J. Phys. D: Appl. Phys.

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The electron energy distribution function (EEDF) was determined from the second derivative of the I–V Langmuir probe characteristics and, thereafter, theoretically calculated by solving the plasma kinetic equation, using the black wall (BW) approximation, in the positive column of a neon glow discharge. The pressure has been varied from 0.5 to 4 Torr and the current from 10 to 30 mA.The measured electron temperature, density and electric field strength were used as input data for solving the kinetic equation.Comparisons were made between the EEDFs obtained from experiment, the BW approach, the Maxwellian distribution and the Rutcher solution of the kinetic equation in the elastic energy range. The best conditions for the BW approach are found to be under the discharge conditions: current density jd = 4.45 mA cm−2 and normalized electric field strength E/p = 1.88 V cm−1 Torr−1.

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Probe determination of the electron energy distribution in a Hg-Ar low-pressure positive column

Abstract: Evaluation of the electron energy distribution in a lowpressure HgAr discharge with a twotemperature approximation

Cited by 5 publications

References 11 publications

Thomson scattering in a low-pressure argon mercury positive column

Thomson scattering in a low-pressure argon mercury positive column

Thomson scattering in a low-pressure neon mercury positive column

Electron energy distribution function in the positive column of a neon glow discharge using the black wall approximation

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