Photoabsorption and photoionization cross sections of O, O/sub 2/, and N/sub 2/ for photoelectron production calculations: a compilation of recent laboratory measurements. Memorandum report

Technical Report · Mon Mar 28 23:00:00 EST 1988

OSTI ID:6952611

Conway, R R

Recent laboratory measurements of photoionization cross sections and ion-state branching ratios for atomic oxygen, molecular nitrogen, and molecular oxygen are combined with theoretical cross sections for soft-x-ray absorption and tabulated for use in atmospheric photoionization calculations. The most important changes from earlier compilations for aeronomical calculations is a factor of approximately two reduction in the absorption and ionization cross section of atomic oxygen between 100 and 300 angstroms, and a detailed treatment of partial cross sections for the dissociating state of N/sub 2/ and O/sub 2/. The results are tabulated on the wavelength scale of the Atmospheric Explorer solar reference spectrum SC 21REFW (Hinteregger et al., 1981).

• Research Organization: Naval Research Lab., Washington, DC (USA)
• OSTI ID: 6952611
• Report Number(s): AD-A-193866/1/XAB; NRL-MR-6155
• Country of Publication: United States
• Language: English

Related Subjects

500100 -- Environment
Atmospheric-- Basic Studies-- (-1989)
54 ENVIRONMENTAL SCIENCES
640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ABSORPTION
AIR
BRANCHING RATIO
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
ELEMENTS
FLUIDS
GASES
IONIZATION
IONS
NITROGEN
NONMETALS
OXYGEN
PHOTOIONIZATION
PHOTON COLLISIONS