Deactivation of xenon atoms in the 6s resonant state in collisions with xenon and helium atoms

The absorption probing method was used to investigate collisional deactivation of the 6s[3/2]10(3P1) state of the xenon atom in high-pressure He - Xe mixtures with a low xenon concentration. Measurements were made of the rate constants of the following plasma-chemical reactions: Xe* + Xe + He → Xe2* + He [(2.1 ± 0.2) x 10-32 cm6s-1], Xe* + 2He → HeXe* + He (less than 10-35 cm6s-1), and Xe* + He → products + He (less than 3 x 10-15 cm3s-1). (active media)