Abstract
Abstract
A comprehensive study of electron collisions with the X
1Σg
+ ground state as well as the metastable A
3Σu
+ and a
1Πg excited states of the N2 molecule is reported using the fixed-nucleus R-matrix method. Integral elastic scattering and electronic excitation cross sections from the X
1Σg
+ ground state to the eight lowest electronic states, A
3Σu
+, B
3Πg, W
3Δu, B′
3Σu
−, a
1Πg, a′
1Σu
−, w
1Δu and C
3Πu, overall agree well with the available experimental and theoretical results although updates of some recommended values are suggested. Accurate electron impact electronic transition cross sections starting from the A
3Σu
+ and a
1Πg metastable excited states are reported. The total summed electronic transition cross sections from the a
1Πg state is dominant: an order of magnitude higher than those of the X
1Σg
+ ground state. The de-excitation cross sections generally show a downward trend with increasing incident electron energy, which is different from the elastic and electronic excitation cross sections which generally increase with collision energy. There is a prominent 2Πu symmetry resonance peak at 2.8 eV for electronic de-excitation scattering of a
1Πg → B
3Πg, which significantly contributes to the total summed cross sections from the a
1Πg excited state. The present results provide a new insight which will aid understanding of electron spectra in the atmosphere of the Earth and Titan.
Funder
National Natural Science Foundation of China
Subject
Condensed Matter Physics,Atomic and Molecular Physics, and Optics
Cited by
8 articles.
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