Date of Award
Creative Commons License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
This present work describes the observation of the metastable species O (1S) fragment following the dissociation of molecules CO 2 and CH3OH by pulse electron impact. The pulse of electron beam, target gas beam and the axis of detector are arranged perpendicular to each other. The detector which is sensitive to O (1S) atoms consists of a thin layer of freshly deposited xenon on its surface. O ( 1S) atoms and xenon quickly form excimer XeO* and rapidly decay producing easily detected photons. In the case of CO2 and CH3OH, the results indicate that the production of metastable O (1S) of CH3OH is about 2% to 8% in comparision to CO2. The Time-of-Flight spectrum and Released Kinetic Energy distribution are presented for each target gas. By using relative flow technique, the cross section curve of CH3OH from O eV to 300 eV is presented by using CO2 cross section values as reference.
Chui, Wei, "Metastable fragment production following electron impact on small molecules and atomic oxygen" (2008). Electronic Theses and Dissertations. 8061.