ATOMIC PROCESSES IN HELIUM-KRYPTON AND HELIUM XENON MIXTURES,
Abstract
The momentum tr 2r collision frequency of thermal electrons with neutrals in a decaying plasma established in helium-krypton and helium xenon mixtures of known proportions were measured by microwave interferometer at gas temperatures of 200 to 600 K. Mobilities of Kr and Xe in helium and in their respective parent gas have also been determined, from the characteristic time constants of the electron density decay measured in the afterglow in the mixtures at low pressures, to be: mu(Kr in He) 2.02 = 1.2 cm2/volt-sec, mu(Kr in Kr) 1.01 = 0.06, mu(Xe in He) 18 = 1.1 and mu(Xe in Xe) 0.55 = 0.03 at 300 K. A study of the pressure dependence of the characteristic time constants of the elctron density decay at fixed ratios of krypton to helium and xenon to helium con centrations yields the three body conversion frequency of atomic krypton and xenon ions to their respective molecular ions. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1963
- Accession Number
- AD0411955
Entities
People
- C.l. Chen
Organizations
- University of Illinois Urbana–Champaign