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Laboratory experiments on interstellar ice analogs: the sticking and desorption of small physisorbed molecules

Fuchs, G. W.; Acharyya, K.; Bisschop, S. E.; Öberg, K. I.; van Broekhuizen, F. A.; Fraser, H. J.; Schlemmer, S.; van Dishoeck, E. F. and Linnartz, H. (2006). Laboratory experiments on interstellar ice analogs: the sticking and desorption of small physisorbed molecules. In: NASA Laboratory Astrophysics Workshop, 14-16 February 2006, Las Vegas, Nevada, UK.

URL: http://www-cfadc.phy.ornl.gov/nasa_law/
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Abstract

Molecular oxygen and nitrogen are difficult to observe since they are infrared inactive and radio quiet. The low O2 abundances found so far combined with general considerations of dense cloud conditions suggest molecular oxygen is frozen out at low temperatures (< 20 K) in the shielded inner regions of cloud cores. In solid form O2 and N2 can only be observed as adjuncts within other ice constituents, like CO. In this work we focus on fundamental properties of N2 and O2 in CO ice-gas systems, e.g. desorption characteristics and sticking probabilities at low temperatures for different ice morphologies.

Item Type: Conference or Workshop Item
Copyright Holders: 2006 The Authors
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM)
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Item ID: 37266
Depositing User: Stephen Serjeant
Date Deposited: 27 Jun 2013 10:24
Last Modified: 19 Dec 2017 10:04
URI: http://oro.open.ac.uk/id/eprint/37266
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