Atomic Collision Processes Relating to the Ionosphere
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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1970
- Accession Number
- AD0715715
Entities
People
- Arthur V. Phelps
- P. J. Chantry