Physics
Scientific paper
May 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agusmsa31b..07s&link_type=abstract
American Geophysical Union, Fall Meeting 2007, abstract #SA31B-07
Physics
0310 Airglow And Aurora, 0317 Chemical Kinetic And Photochemical Properties, 0335 Ion Chemistry Of The Atmosphere (2419, 2427), 0355 Thermosphere: Composition And Chemistry, 0358 Thermosphere: Energy Deposition (3369)
Scientific paper
The NO+ ion is an important constituent of the upper atmosphere. This is especially so during auroral dosing of the atmosphere and during solar storms when its density becomes elevated and the nascent ion may be produced in highly vibrationally excited state. Because its vibrational transition is dipole allowed and has short radiative lifetime (τ10= 0.092 s), it may radiatively cool the atmosphere. Since the vibrational frequency of NO+ (ν10=2344.17 cm-1) is close to that of N2(ν10=2329.92 cm- 1), it may be quenched by the impact with the latter. In order to investigate the role of NO+ in cooling the atmosphere we calculate the rate coefficient for the process: NO+ (v=1) + N2(v=0) = NO+ (v=0) + N2 (v=1) + 14.25 cm-1. In our model dipole moment in N2, induced by the NO+ charge, interacts with dipole moment of the latter causing the energy transfer. We compare our calculation with the available experimental data to validate our model.
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