| dc.description.abstract |
An attempt has been made in this thesis to model some of the emissions observed
by SPICAM and SPICAV on Mars and Venus, respectively, viz., CO Cameron band,
CO+
2 ultraviolet doublet, N2 triplet bands, atomic oxygen green (5577 A), red doublet
(6300, 6364 A), and ultraviolet (2972 A) emissions. One of major sources of these
emissions is photoelectron impact ionization/excitation. In this thesis, an electron
degradation model based on Monte Carlo technique has been developed to calculate
the production/excitation rates of above mentioned emissions due to electron impact.
The limb brightness pro les of emissions are calculated and compared with the observations
wherever available. The e ect of various model input parameters on dayglow
emissions intensities is also evaluated |
en_US |