Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1781444 | Planetary and Space Science | 2012 | 11 Pages |
Abstract
⺠First detailed chemistry-emission model for the production of Cameron band on comet Halley is developed. ⺠Photoelectron impact excitation of CO and dissociative excitation of CO2 are the major production processes of CO(a3Π). ⺠Contrary to earlier suggestions, the photodissociative excitation of CO2 is not the main source mechanism of CO(a3Π). ⺠Cameron emission can be used to derive the photoelectron density in the inner coma, rather than the CO2 abundance. ⺠Sensitivity of the Cameron band intensity to the solar EUV flux and electron impact excitation cross-sections is evaluated.
Keywords
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Physical Sciences and Engineering
Earth and Planetary Sciences
Geophysics
Authors
Susarla Raghuram, Anil Bhardwaj,