Updated Excitation and Ionization Cross Sections for Electron Impact on Atomic Oxygen

• Published in: Journal of physical and chemical reference data Vol. 19; no. 1; pp. 277 - 305
• Main Authors: Laher, Russ R., Gilmore, Forrest R.
• Format: Journal Article
• Language: English
• Published: United States 01.01.1990
• Subjects: 640304 - Atomic, Molecular & Chemical Physics- Collision Phenomena; ATOM COLLISIONS; ATOMIC AND MOLECULAR PHYSICS; COLLISIONS; COMPILED DATA; CROSS SECTIONS; DATA; DOCUMENT TYPES; ELECTRON COLLISIONS; ELECTRON-ATOM COLLISIONS; ELECTRONIC STRUCTURE; ELEMENTS; ENERGY LEVELS; ENERGY-LEVEL TRANSITIONS; EXCITATION; EXCITED STATES; EXPERIMENTAL DATA; FORBIDDEN TRANSITIONS; INFORMATION; INNER-SHELL EXCITATION; IONIZATION; NONMETALS; NUMERICAL DATA; OXYGEN; REVIEWS; RYDBERG STATES; TABLES; REVIEWS; EXCITATION; ELECTRON−ATOM COLLISIONS; COMPILED DATA; ELECTRONIC STRUCTURE; ENERGY−LEVEL TRANSITIONS; FORBIDDEN TRANSITIONS; TABLES; OXYGEN; CROSS SECTIONS; INNER−SHELL EXCITATION; IONIZATION; RYDBERG STATES; EXPERIMENTAL DATA
• ISSN: 0047-2689; 1529-7845
• DOI: 10.1063/1.555872

Cross sections for the excitation and ionization of atomic oxygen by electron impact are presented as the result of a critical review of experimental and theoretical work on this subject. An effort has been made to compile the most accurate and complete set of cross sections available. More than 60 profiles of excitation cross section versus electron‐impact energy are presented. These include transitions to the forbidden metastable O(2p 4 1 D) and O(2p 4 1 S) states, the allowed autoionizing O(2p 5 3 P  o ) state, nine allowed Rydberg series, and twenty‐nine forbidden Rydberg series. Recommended ionization cross sections for transitions to the outer‐electron ionization states O+(4 S  o ), O+(2 D o ), O+(2 P o ), to the inner‐electron ionization state O+(4 P), and to the O2 + state are also given. Many of these excitation and ionization cross sections are based on recently published laboratory measurements, and differ from previously accepted values by factors of ∼2–3, and in a few cases by up to a factor of 10. The data presented in this report will be useful in calculations of aeronomical and artificially‐induced electron impact on atomic oxygen, an important component of the upper atmosphere.