Resonances in Electron Impact on Diatomic Molecules

In this review we present the energies, configuration, and other properties of resonances (also called "compound states" and "temporary negative ions") in diatomic molecules. Much of the information is presented in the form of tables and energy level diagrams. Vibrational, rotational, and electronic excitation are discussed whenever these processes have given information on resonances; often these excitation processes proceed via resonances. The paper is divided according to molecular species (${\mathrm{H}}_2$, ${\mathrm{N}}_2$, CO, NO, ${\mathrm{O}}_2$), but the main conclusions are discussed by the nature of the processes involved.