Condensation and sublimation of carbon dioxide and water molecules at cryogenic temperatures

<p>"Measurements of the condensation coefficient of CO₂ and H₂O have been made using a molecular beam and quartz crystal microbalances. The dependence of the condensation coefficient on variables such as population density on the substrate, temperature of the substrate, molecular beam intensity and temperature of the molecular beam, was investigated. The results are explained using heterogeneous nucleation theory for low density population, and a new approach for high density population is presented. The rate of sublimation of these two gases was measured directly. The results are reported in terms of vapor pressure in the range 10⁻⁹ to 10⁻⁴ Torr. The spatial distribution of reflected and sublimated CO₂ and H₂O molecules is found to follow the diffuse cosine law"--Abstract, page ii.</p>

Name thesis:degree_name

Ph. D. in Chemistry

Grantor

University of Missouri--Rolla

Year dc:date.available

2016

Author dc:creator

• Cazcarra, Victor

• Chemistry

Repository record dc:identifier

https://scholarsmine.mst.edu/doctoral_dissertations/213

OAI identifier oai:identifier

oai:scholarsmine.mst.edu:doctoral_dissertations-1215