Calculated C(¹D) (top panel) and N(²D) (bottom panel) production rate profiles, for different photon and electron impact dissociative excitation reactions of the major cometary volatiles, in C/2016 R2. Photodissociation and electron impact dissociation of CN producing N(² D) production rate profiles are plotted after multiplying them by a factor of ten. The input conditions are the same as explained in Fig. 4. Here, hν represents a solar photon and e_ph is a suprathermal electron.