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Upper limit of hydrogen and helium concentrations on Titan

Published online by Cambridge University Press:  14 August 2015

Wayne E. McGovern
Wayne E. McGovern*
Affiliation:
Institute of Atmospheric Physics, The University of Arizona, Tucson, Ariz., U.S.A.

Abstract

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The satellite Titan is commonly quoted as possessing an atmosphere consisting of at least 2 × 104 cm atm of methane. Plausible additional atmospheric constituents like hydrogen and helium are assumed to have completely escaped from the satellite. However, the employment of recent techniques to the upper atmosphere of Titan permits an improved estimate of the upper limits of the hydrogen to methane and helium to methane mixing ratios existing in the lower atmosphere of Titan, namely 10−6±1 and 10−3.5±0.5.

Type
Part III: Outer Planets
Information
Symposium - International Astronomical Union , Volume 40: Planetary Atmospheres , 1971 , pp. 394 - 400
Copyright
Copyright © Reidel 1971 

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