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Deuterium in the Solar System

Yung, Yuk L. and Dissly, Richard W. (1992) Deuterium in the Solar System. In: Isotope Effects in Gas-Phase Chemistry. American Chemical Society Symposium Proceedings. No.502. American Chemical Society , Washington, DC, pp. 369-389. ISBN 9780841224711.

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A survey of the abundances of deuterium in planetary atmospheres and small bodies has been carried out. The observed pattern of D/H ratios in the solar system may be interpreted in terms of a few simple concepts: origin, fractionation, and dilution. There appear to be two distinct reservoirs of hydrogen in the solar nebula: the bulk of hydrogen as H_2, and a smaller amount in ices and organics. The latter reservoir is characterized by a higher D/H ratio than the former, and may be the principal source of hydrogen to the terrestrial planets and small bodies. The evolution of planetary atmospheres over the age of the solar system has resulted in substantial changes in the D/H ratio in the atmospheres of the terrestrial planets. In the giant planets the abundance of D is dominated by the primordial HD, and there has been negligible chemical evolution since formation. Quantitative modeling of the D/H ratio in the solar system remains hampered by the lack of appropriate chemical kinetics data.

Item Type:Book Section
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URLURL TypeDescription Chapter Chapter
Yung, Yuk L.0000-0002-4263-2562
Additional Information:© 1992 American Chemical Society. Received January 6, 1992. We thank Mark Allen, Dave Stevenson and Geoff Blake for critically reading the manuscript, and Bill Langer for drawing our attention to recent developments in deuterium chemistry in the interstellar medium. The research is supported in part by NASA grants NAGW 1509 and NAGW 1538 to the California Institute of Technology. One of us (RWD) acknowledges support of a NASA graduate fellowship.
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NASA Graduate FellowshipUNSPECIFIED
Series Name:American Chemical Society Symposium Proceedings
Issue or Number:502
Record Number:CaltechAUTHORS:20140813-083505685
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Official Citation:Yuk, L. Y., & Richard, W. D. (1992). Deuterium in the Solar System Isotope Effects in Gas-Phase Chemistry (Vol. 502, pp. 369-389): American Chemical Society.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:48471
Deposited On:16 Sep 2014 17:57
Last Modified:10 Nov 2021 18:32

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