Rocket-borne spectroscopic measurements in the ultraviolet aurora: Nitrogen Vegard-Kaplan bands

摘要: The ultraviolet spectrum of an aurora was measured with a spectrometer that carried by rocket into IBC I+ aurora. Altitude profiles the band emissions from Vegard-Kaplan and second positive systems N2 were obtained. Consideration all excitation processes triplet states shows production A3Σu+ state is proportional to C3Πu state. volume emission rate profile system deduced column indicated quenched. Comparison gives quenching rates for υ′=0 1 levels state, which vary smoothly 100 sec−1 at km 0.3 220 km. At high altitudes most likely agent atomic oxygen, molecular oxygen becoming important below 120 With use model atmosphere, coefficients are calculated be 9×10−11 1.1×10−10 cm3 sec−1, respectively. ratio 4.2. rotational temperature increases altitude.