• Title/Summary/Keyword: 전자군파라미터

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Analysis of Electron Swarm Diffusion Coefficients and Energy Distribution Function in $e^-$-$CF_4$ Scattering ($e^-$-$CF_4$산란중에서 전자군의 확산계수 및 에너지분포함수 연구)

  • 하성철;임상원
    • Electrical & Electronic Materials
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    • v.10 no.4
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    • pp.342-348
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    • 1997
  • In this paper, the behavior of electron swarm parameters and energy distribution function of the discharge under high E/N condition in e$^{-10}$ -CF$_{4}$ gas have been analysed over the E/N range from 1-300(Td) by the MCS and BEq methods using set of electron collision cross section determined by the authors. The swarm parameters and energy distribution function have been calculated for the pulsed Townsend, steady-state Townsend and Time of Flight methods. The results gained that the value of electron swarm parameters such as the electron drift velocity, the electron ionization and attachment coefficients and longitudinal diffusion coefficients in agreement with the experimental and theoretical data for a range of E/N. The electron energy distribution function has been explained and analysed in e$^{-10}$ -CF$_{4}$ at E/N : 5, 10, 100, 200, 300(Td) for a case of the equilibrium region in the mean electron energy and respective set of electron collision cross sections. The validity of the results has been confirmed by TOF and SST methods.

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A Study on the Improvement of the Electron Transport Properties in $SF_{6+}Ar$ Mixtures Gas ($SF_{6+}Ar$혼합기체의 전자수송특성 개선에 관한 연구)

  • 하성철;김상남;유회영;서상현;임상원;전병훈
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
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    • v.11 no.1
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    • pp.67-73
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    • 1998
  • In this paper, the electron swarm parameters in the 0.5% and 0.2% SF\ulcorner+Ar mixtures are measured by time of flight method over the E/N(Td) range from 30 to 300(Td). The measurements have been carried out by the double shutter drift tube with variable drift distance from the cathod. A two-term approximation of the boltzmann equation analysis and Monte Carlo simulation have been also used to study electron transport coefficients. We have calculated W, $ND_L,\;ND_T,\;\alpha,\;\eta,\;\alpha-\eta$, and the limiting breakdown electric field to gas mixtures ratio in pure $SF_6$+Ar mixtures. The electron energy distribution function has been analysed in $SF_6$+Ar mixtures at E/N : 200(Td) for a case of the equilibrium region in the mean electron energy. The measured results and the calculated results have been compared each other.

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Electron Swarm Parameter Characteristic in $SiH_4$ Plasma by TOF Method (TOF법을 이용한 $SiH_4$ 프라즈마중의 전자군파라미터특성)

  • Lee, Hyung-Yoon;Ha, Sung-Chul;Yu, Heoi-Young;Kim, Sang-Nam;Lim, Sang-Won;Moon, Ki-Seok
    • Proceedings of the KIEE Conference
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    • 1997.07e
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    • pp.1830-1833
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    • 1997
  • This paper describes the electron transport characteristic in $SiH_4$ gas calculated for range of E/N values from $0.5{\sim}300$(Td) using a set of electron collision cross sections determined by the authors and the values of electron swarm parameters are obtained for TOF method. The results gained that the value of an electron swarm parameter such as the electron drift velocity, longitudinal and transverse diffusion coefficients with the experimental and theoretical for a range of E/N. The electron energy distributions function were analysed in monosilane at E/N : 30, 50(Td) for a case of equilibrium region in the mean electron energy. The validity of the results obtained has been confirmed by a TOF method.

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