SATELLITE-BORNE LYMAN-ALPHA EXPERIMENTS.
Abstract
An experimental program to study the hydrogen Lyman-alpha radiation outside the bulk of the earth's atmosphere is described. The purpose of the experiments is to study the radiation arising from resonant scattering of solar Lyman-alpha radiation by atmospheric and interplanetary neutral atomic hydrogen and Lyman-alpha radiation from other sources. Understanding of the density, temperature, and distribution of atmospheric hydrogen, and their diurnal and solar-cycle variations, is the objective of the program. Satellite-borne instruments have been developed, in particular a narrow-band photometer and a sky-scanning photometer that incorporates an atomic hydrogen filter to analyze the radiation. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1966
- Accession Number
- AD0487550
Entities
People
- M. A. Clark
Organizations
- The Aerospace Corporation