GUENTER LOESER MEMORIAL LECTURE 1960. INTERPLANETARY IONIZATION BY SOLAR EXTREME ULTRAVIOLET RADIATION
Abstract
From recent rocket monochromator measurements of solar photon fluxes phi(lambda) between 1300 and 60 A around 200 km, the fluxes phi sub o characteristic of the upper F sub 2region and interplanetary space near the earth are estimated by assuming some reasonable spectral attenuation factors phi/phi sub o because of the atmospheric absorption above the point of observation. Ionization rates in terms of sigma sub j phi sub o are estimated for H, O, N, and N2. The estimated total ionization rate for the hydrogen atom of about 5 x 10 to the -7th power per sec implies a fractional ionization of at least 99.9% for total hydrogen particle number densities of less than about 500 per cc. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1960
- Accession Number
- AD0277383
Entities
People
- Hans H. Hinteregger
Organizations
- Air Force Cambridge Research Laboratories