Accession Number:

AD0411955

Title:

ATOMIC PROCESSES IN HELIUM-KRYPTON AND HELIUM XENON MIXTURES,

Descriptive Note:

Corporate Author:

ILLINOIS UNIV URBANA COORDINATED SCIENCE LAB

Personal Author(s):

Report Date:

1963-06-01

Pagination or Media Count:

31.0

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 muKr in He 2.02 1.2 cm2volt-sec, muKr in Kr 1.01 0.06, muXe in He 18 1.1 and muXe 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

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE