We introduce a concept ‘yield spectrum’ and calculate this two-dimensional function using a modified discrete energy bin method for 50-eV to 10-keV incident electrons impacting on the gases Ar, H2, H2O, O2, N2, O, CO, CO2, and He. The yield spectrum is amenable to physical interpretation, accurate analytic representation, and convenient application to the determination of all types of yields needed in aeronomical problems.
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