Formation of H2CO and C02 on an icy grain analogue using fast H-atoms

S. Madzunkov, J. MacAskill, A. Chutjian, P. Ehrenfreund, M. Darrach, G. Vidali, B. Shortt

Research output: Contribution to journalConference Articlepeer-review


Formadehyde (H2CO) and carbon dioxide (CO2) are produced in collisions of a superthermal, 3 eV beam of H(2S) atoms with CO molecules adsorbed on a gold surface at 4.8K. The reaction-generated products are detected and anayzed using the techniques of temperature programmed desorpton (TPD), quadrupole mass spectrometry (QMS), and a novel application of the Metropolis random-walk procedure to identify the unique fractionaton patterns of H2CO and CO2 from the patterns of other species such as N2, CO, and H20 embedded in the CO blanket and devolved in the TPD/MS process. Reaction sequences will be given to account for the formaton of H2CO and C02.

Original languageEnglish (US)
Article number092005
JournalJournal of Physics: Conference Series
Issue number9
StatePublished - Dec 24 2009
Event26th International Conference on Photonic, Electronic and Atomic Collisions - Kalamazoo, United States
Duration: Jul 22 2009Jul 28 2009

ASJC Scopus subject areas

  • General Physics and Astronomy


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