Ionization coefficients in selected gas mixtures of interest to particle detectors

P. G. Datskos; J. G. Carter; L. G. Christophorou

doi:10.1063/1.350730

Ionization coefficients in selected gas mixtures of interest to particle detectors

P. G. Datskos
, J. G. Carter
, L. G. Christophorou

Sensors and Electronics

Research output: Contribution to journal › Article › peer-review

20 Scopus citations

Abstract

We have measured and report the total gas-number-density normalized effective ionization coefficient, ᾱ/N, as a function of the density-reduced electric field, E/N for Ar, CO₂, CF₄, the binary gas mixtures CF₄:Ar (20:80), CO₂:Ar(20:80), CO ₂:CH₄(20:80) and for the ternary gas mixtures CO ₂:CF₄:Ar (10:10:80) and H₂O:CF ₄:Ar(2:18:80). We also report the limiting value, (E/N)_lim of the above gaseous systems. A comparison of our results on the unitary gases shows good agreement with previous measurements. The results on the ternary mixtures show that the addition of CO₂ or H₂O to the binary gas mixture CF₄:Ar lowers the electron energies and increases ᾱ/N(E/N).

Original language	English
Pages (from-to)	15-21
Number of pages	7
Journal	Journal of Applied Physics
Volume	71
Issue number	1
DOIs	https://doi.org/10.1063/1.350730
State	Published - 1992

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title = "Ionization coefficients in selected gas mixtures of interest to particle detectors",

abstract = "We have measured and report the total gas-number-density normalized effective ionization coefficient, ᾱ/N, as a function of the density-reduced electric field, E/N for Ar, CO2, CF4, the binary gas mixtures CF4:Ar (20:80), CO2:Ar(20:80), CO 2:CH4(20:80) and for the ternary gas mixtures CO 2:CF4:Ar (10:10:80) and H2O:CF 4:Ar(2:18:80). We also report the limiting value, (E/N)lim of the above gaseous systems. A comparison of our results on the unitary gases shows good agreement with previous measurements. The results on the ternary mixtures show that the addition of CO2 or H2O to the binary gas mixture CF4:Ar lowers the electron energies and increases ᾱ/N(E/N).",

author = "Datskos, \{P. G.\} and Carter, \{J. G.\} and Christophorou, \{L. G.\}",

year = "1992",

doi = "10.1063/1.350730",

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journal = "Journal of Applied Physics",

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publisher = "American Institute of Physics",

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T1 - Ionization coefficients in selected gas mixtures of interest to particle detectors

AU - Datskos, P. G.

AU - Carter, J. G.

AU - Christophorou, L. G.

PY - 1992

Y1 - 1992

N2 - We have measured and report the total gas-number-density normalized effective ionization coefficient, ᾱ/N, as a function of the density-reduced electric field, E/N for Ar, CO2, CF4, the binary gas mixtures CF4:Ar (20:80), CO2:Ar(20:80), CO 2:CH4(20:80) and for the ternary gas mixtures CO 2:CF4:Ar (10:10:80) and H2O:CF 4:Ar(2:18:80). We also report the limiting value, (E/N)lim of the above gaseous systems. A comparison of our results on the unitary gases shows good agreement with previous measurements. The results on the ternary mixtures show that the addition of CO2 or H2O to the binary gas mixture CF4:Ar lowers the electron energies and increases ᾱ/N(E/N).

AB - We have measured and report the total gas-number-density normalized effective ionization coefficient, ᾱ/N, as a function of the density-reduced electric field, E/N for Ar, CO2, CF4, the binary gas mixtures CF4:Ar (20:80), CO2:Ar(20:80), CO 2:CH4(20:80) and for the ternary gas mixtures CO 2:CF4:Ar (10:10:80) and H2O:CF 4:Ar(2:18:80). We also report the limiting value, (E/N)lim of the above gaseous systems. A comparison of our results on the unitary gases shows good agreement with previous measurements. The results on the ternary mixtures show that the addition of CO2 or H2O to the binary gas mixture CF4:Ar lowers the electron energies and increases ᾱ/N(E/N).

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U2 - 10.1063/1.350730

DO - 10.1063/1.350730

M3 - Article

AN - SCOPUS:36448999807

SN - 0021-8979

VL - 71

SP - 15

EP - 21

JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 1

ER -

Ionization coefficients in selected gas mixtures of interest to particle detectors

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