Collisional excitation rates for the first negative and second positive systems of nitrogen
Cover, Donald Lee
Milne, Edmund A.
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Nitrogen and nitrogen-argon gas mixtures were excited by 1.5 MeV protons from a Van de Graaff generator. Intensity measurements were made for the first negative (S = 3914.4A) and the second positive (A = 3371.3A) transitions of molecular nitrogen. A determination of the excitation coefficient (C), which is a function of the reaction rate coefficient and excitation cross section, was made for the first negative and second positive transitions. The excitation coefficient (C) is a constant for each transition and contains all non-radiative energy transfer constants of the general rate equation. For the first negative transition the value of excitation coefficient was found to be .256 +/- .046 and for the second positive transition is was found to be 2.25+/- .12.
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