Abstract
THE first negative bands of N2+ are excited in the atmosphere by energetic particle precipitation. The cross section data of Srivastava and Mirza1 imply an associated N2+ ion production rate of 14.1 ion pairs per photon in the 0–0 band or 41.5 ion pairs per photon in the 0–1 band, The total ion production rate for all species may be a few times greater and depends on the relative concentration of N2, a function of the height at which the ionizing radiation is stopped.
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References
Srivastava, B. N., and Mirza, I. M., Phys. Rev., 176, 137 (1968).
Yano, K., Planet Space Sci., 14, 709 (1966).
Broadfoot, A. L., and Hunten, D. M., Planet. Space Sci., 14, 1303 (1966).
Millikan, R. A., Neher, H. V., and Pickering, W. H., Phys. Rev., 61, 397 (1942).
Jeunehomme, M. J., Chem. Phys., 44, 2672 (1966).
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JACKA, F., SCHAEFFER, R. & FREUND, J. Mid-Latitude Atmospheric Emission of N2+ First Negative Bands. Nature 228, 984–985 (1970). https://doi.org/10.1038/228984b0
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DOI: https://doi.org/10.1038/228984b0
