Translational Spectra Due to Collision-Induced Overlap Moments in Mixtures of He with CO2, N2, CH4, and C2H6

Ezra Bar-Ziv; Shmuel Weiss

Translational Spectra Due to Collision-Induced Overlap Moments in Mixtures of He with CO₂, N₂, CH₄, and C₂H₆

Department of Chemistry

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Abstract

Enhancement of the absorption, upon addition of He to CO₂, N₂, CH₄, and C₂H₆, has been observed in the frequency region 200–450 cm⁻¹. It is shown that in this frequency region absorption due to multipole moment induction is weak and particularly so because of the very low polarizability of He. The observed spectra are thus due to induction by overlap forces and similar in origin to spectra observed for rare gas mixtures. The observed spectra are indeed found to resemble those for mixtures of He with rare gases in position and shape as well as in intensity. The spectra are analyzed in terms of a hard sphere potential and an overlap moment varying exponentially with intermolecular separation.

Original language	English
Pages	29-33
State	Published - 1 Jul 1972

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Cite this

@conference{a94284378a6a4143a0120c0da70c7c77,

title = "Translational Spectra Due to Collision-Induced Overlap Moments in Mixtures of He with CO2, N2, CH4, and C2H6",

abstract = "Enhancement of the absorption, upon addition of He to CO2, N2, CH4, and C2H6, has been observed in the frequency region 200–450 cm−1. It is shown that in this frequency region absorption due to multipole moment induction is weak and particularly so because of the very low polarizability of He. The observed spectra are thus due to induction by overlap forces and similar in origin to spectra observed for rare gas mixtures. The observed spectra are indeed found to resemble those for mixtures of He with rare gases in position and shape as well as in intensity. The spectra are analyzed in terms of a hard sphere potential and an overlap moment varying exponentially with intermolecular separation.",

author = "Ezra Bar-Ziv and Shmuel Weiss",

year = "1972",

month = jul,

day = "1",

language = "English",

pages = "29--33",

}

TY - CONF

T1 - Translational Spectra Due to Collision-Induced Overlap Moments in Mixtures of He with CO2, N2, CH4, and C2H6

AU - Bar-Ziv, Ezra

AU - Weiss, Shmuel

PY - 1972/7/1

Y1 - 1972/7/1

N2 - Enhancement of the absorption, upon addition of He to CO2, N2, CH4, and C2H6, has been observed in the frequency region 200–450 cm−1. It is shown that in this frequency region absorption due to multipole moment induction is weak and particularly so because of the very low polarizability of He. The observed spectra are thus due to induction by overlap forces and similar in origin to spectra observed for rare gas mixtures. The observed spectra are indeed found to resemble those for mixtures of He with rare gases in position and shape as well as in intensity. The spectra are analyzed in terms of a hard sphere potential and an overlap moment varying exponentially with intermolecular separation.

AB - Enhancement of the absorption, upon addition of He to CO2, N2, CH4, and C2H6, has been observed in the frequency region 200–450 cm−1. It is shown that in this frequency region absorption due to multipole moment induction is weak and particularly so because of the very low polarizability of He. The observed spectra are thus due to induction by overlap forces and similar in origin to spectra observed for rare gas mixtures. The observed spectra are indeed found to resemble those for mixtures of He with rare gases in position and shape as well as in intensity. The spectra are analyzed in terms of a hard sphere potential and an overlap moment varying exponentially with intermolecular separation.

M3 - Abstract

SP - 29

EP - 33

ER -

Translational Spectra Due to Collision-Induced Overlap Moments in Mixtures of He with CO2, N2, CH4, and C2H6

Abstract

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Translational Spectra Due to Collision-Induced Overlap Moments in Mixtures of He with CO₂, N₂, CH₄, and C₂H₆