Jan 30, 2009 · Here, is the energy of the absorbed BBR photon, A + is an atomic ion and e − is a free electron emitted due to the ionization. The first study of ionization of Rydberg atoms was published by Spencer et al . They calculated and measured the dependence of the sodium 17D BBR-induced photoionization rate on the ambient temperature.
The ionization energy may be an indicator of the reactivity of an element. Elements with a low ionization energy tend to be reducing agents and form cations, which in turn combine with anions to form salts. Ionization energy. This graph shows the first ionization energy of the elements in electron volts.