Open Access. Powered by Scholars. Published by Universities.®

Physics Commons

Open Access. Powered by Scholars. Published by Universities.®

Syracuse University

TBD

2010

Articles 1 - 1 of 1

Full-Text Articles in Physics

Interaction Of Atomic And Molecular Hydrogen With Tholin Surfaces At Low Temperatures, Gianfranco Vidali, Ling Li, Hui Zhao Oct 2010

Interaction Of Atomic And Molecular Hydrogen With Tholin Surfaces At Low Temperatures, Gianfranco Vidali, Ling Li, Hui Zhao

Physics

We study the interaction of atomic and molecular hydrogen with a surface of tholin, a man-made polymer considered to be an analogue of aerosol particles present in Titan's atmosphere, using thermal programmed desorption at low temperatures below 30 K. The results are fitted and analyzed using a fine-grained rate equation model that describes the diffusion, reaction and desorption processes. We obtain the energy barriers for diffusion and desorption of atomic and molecular hydrogen. These barriers are found to be in the range of 30 to 60 meV, indicating that atom/molecule-surface interactions in this temperature range are dominated by ...