Cross sections for OH transitions due to electron impact on water molecules
- Department of Physics, Lake Forest College, Lake Forest, Illinois 60045 (United States)
We have measured absolute cross sections for electrons (9-700 eV) incident on water molecules. By fitting synthetic vibrational bands to the experimental emission spectra, we measured the emission cross sections for the OH A {sup 2}{sigma}{sup +}-X {sup 2}{pi} (0,0), (0,1), (1,0), (1,1), (2,1), (2,2), (3,2), and (3,3) bands. The branching fractions from our cross sections are consistent with those we measured in the emission of a rf discharge and with our calculated transition rates. We have also calculated apparent level cross sections for the A {sup 2}{sigma}{sup +}v{sup '}=0, 1, 2, and 3 vibrational levels where the effects of predissociation are obvious.
- OSTI ID:
- 20787254
- Journal Information:
- Physical Review. A, Journal Name: Physical Review. A Journal Issue: 5 Vol. 73; ISSN 1050-2947; ISSN PLRAAN
- Country of Publication:
- United States
- Language:
- English
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