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The D/H ratio in water from HalleyThe neutral gas mass spectrometer on Giotto made neutral and ion composition measurements with a high mass resolution. Evaluation of the ion data within the contact surface gives a D/H ratio in water from Halley between 0.00006 and 0.00048. While this ratio is definitely not compatible with the D/H in molecular hydrogen of the protosolar nebula or the Jovian and Saturnian atmospheres, it is in the range observed for hydrogen in solar system objects which acquired their hydrogen as part of volatile molecules, e.g., as ices.
Document ID
19870015803
Document Type
Conference Paper
Authors
Eberhardt, P. (Bern Univ. Bern, Switzerland)
Dolder, U. (Bern Univ. Bern, Switzerland)
Schulte, W. (Bern Univ. Bern, Switzerland)
Krankowsky, D. (Bern Univ. Bern, Switzerland)
Laemmerzahl, P. (Bern Univ. Bern, Switzerland)
Hoffman, J. H. (Bern Univ. Bern, Switzerland)
Hodges, R. R. (Bern Univ. Bern, Switzerland)
Berthelier, J. J. (Bern Univ. Bern, Switzerland)
Illiano, J. M. (Centre de Recherches en Physique de l'Environnement Saint Maur des Fosses, France)
Date Acquired
September 5, 2013
Publication Date
December 1, 1986
Publication Information
Publication: ESA Proceedings of the 20th ESALB Symposium on the Exploration of Halley's Comet. Volume 1: Plasma and Gas
Subject Category
ASTROPHYSICS
Funding Number(s)
CONTRACT_GRANT: NASW-3576
CONTRACT_GRANT: SNSF-2.034-0.81
Distribution Limits
Public
Copyright
Other