The early afterglow from a pulsed discharge in krypton has been investigated in the visible region of the spectrum. Measurements on the decay of atomic and molecular emission have been made in both diffuse and constricted discharges. The pressure dependence of the observed exponential decays indicates that a two-body collision process controls the early afterglow lifetime. A collision-induced vibrational relaxation of the krypton molecular ion is proposed as the dominant two-body process. The coefficient for this process is 9.0(±0.5) × 102p, leading to a cross section for vibrational relaxation of 1.4(±0.07) × 10− 18 cm2.
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Turner et al. (1968) studied this question.
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