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Electron impact excitation and dissociation of N2 via the b 1Pi(u) state (1991)

Shemansky, D. E. ; James, G. K. ; Trajmar, S. ; [et al.]

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Publication Date: 2011-08-19

Description: Electron impact excitation of the b 1Pi(u) state in N2 plays a prominent role in the dissociation of the molecule and thus in the production of atomic nitrogen in planetary atmospheres. Electron impact excitation cross sections combined with electron-impact-induced fluorescence measurements can yield the corresponding dissociation cross sections. Serious discrepancies exist among excitation cross sections reported in the literature. To clarify the situation, these cross sections were measured at two impact energies using electron energy loss spectroscopy. The new results are in agreement with recent values deduced from optical measurements and fall midway between previous results which are too high or low by factors of 2.

Keywords: LUNAR AND PLANETARY EXPLORATION

Type: Journal of Geophysical Research (ISSN 0148-0227); 96; 17

Format: text

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