Measurements of polyatomic molecule formation on an icy grain analog using fast atoms

Details Measurements of polyatomic molecule formation on an icy grain analog using fast atoms Measurements of polyatomic molecule formation on an icy grain analog using fast atoms

Feb 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006phrva..73b0901m&link_type=abstract

Physical Review A, vol. 73, Issue 2, id. 020901

Physics

10

Interactions Of Atoms And Molecules With Surfaces, Photon And Electron Emission, Neutralization Of Ions, Atomic, Molecular, Chemical, And Grain Processes

Scientific paper

Measurements are reported for production of CO2 resulting from the impact of a monoenergetic O(P3) beam upon a surface cooled to 4.8K and covered with a CO ice. Using temperature-programmed desorption and mass spectrometer detection, one clearly detects increasing amounts of CO2 formation with O(P3) energies of 2, 5, 10, and 14eV . This is a measurement of polyatomic molecule formation on a surface in a new regime using superthermal atoms. The chosen surface coverage, surface temperature, and superthermal atom energy simulate conditions in shock-heated circumstellar and interstellar regions.

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