Accession Number : AD0715715

Title :   Atomic Collision Processes Relating to the Ionosphere

Descriptive Note : Final rept. 1 Sep 1969-31 Aug 1970

Corporate Author : WESTINGHOUSE RESEARCH LABS PITTSBURGH PA ARC AND PLASMA RESEARCH

Personal Author(s) : Chantry, P J ; Phelps, A V

PDF Url : AD0715715

Report Date : Jan 1970

Pagination or Media Count : 45

Abstract : Measurements of the attachment cross-sections in O3 reveal no dependence on temperature below 360K in the energy range 0-4 eV. The peak value of the total attachment cross-section Q(a), of about 3.0 x 10 to the -17th sq cm occurs at an electron energy of 1.07 eV. The individual cross-sections for production of O(-) and O2(-) peak at energies of 1.25 eV and 0.95 eV respectively. The ratios of the three cross-sections Q(a):Q(O(-)): Q(O2(-)) at their peaks are 1.6:1:0.75. From the measured onset for O2(-) production a value of A(O2) or = 0.60 eV is deduced for the electron affinity of O2.

Descriptors :   *ELECTRON IRRADIATION, *IONOSPHERE, *OZONE, DISSOCIATION, IONIZATION, OXYGEN, SCATTERING

Subject Categories : Atmospheric Physics
      Physical Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE