Emission cross sections of Ha and CH(A2D® X2 P) radiations for electron impact on hydrocarbons Back to all publications Publication date 1 January 1977 Reference F.J. de Heer, Emission cross sections of Ha and CH(A2D® X2 P) radiations for electron impact on hydrocarbons, Chem. Phys. 19, 233-240 (1977)