Atomic hydrogen and solar Lyman-alpha flux deduced from STP 78-1 uv observations
Technical Report
·
OSTI ID:5312196
Simultaneous observations of the Lyman-alpha and 1026-A airglow by a spectrometer on the STP 78-1 satellite were analyzed. A spherical model of a multiple scattering of solar Lyman-alpha and Lyman-beta radiation was utilized that nonisothermal temperature profile. Analysis of the data near 0 latitude yields an exobase density N/sub c/ = 26000 + or - 2000/cu cm/sup -3/, and escape flux F/sub c/ = 2 + or - 0.5 x 10/sup 8//sq cm/s. The solar Lyman-alpha line center flux determined from analysis of the Lyman-alpha airglow was 6.0 + or - 1.2 x 10/sup 11/ photons/sq cm/sA. Analysis of the 1026-A airglow showed that this emission is dominated by multiple scattering of solar Lyman-beta photons by atomic oxygen and that the Lyman-beta airglow contributes less than 20% to the observed emission.
- Research Organization:
- California Univ., Berkeley (USA). Space Sciences Lab.
- OSTI ID:
- 5312196
- Report Number(s):
- AD-A-188764/5/XAB
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
640104* -- Astrophysics & Cosmology-- Solar Phenomena
640201 -- Atmospheric Physics-- Auroral
Ionospheric
& Magetospheric Phenomena
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AIRGLOW
ELECTROMAGNETIC RADIATION
ELEMENTS
FAR ULTRAVIOLET RADIATION
HYDROGEN
LIGHT SCATTERING
LYMAN LINES
MEASURING INSTRUMENTS
NONMETALS
RADIATIONS
SCATTERING
SOLAR RADIATION
SPECTRA
SPECTROMETERS
STELLAR RADIATION
ULTRAVIOLET RADIATION
ULTRAVIOLET SPECTRA
640201 -- Atmospheric Physics-- Auroral
Ionospheric
& Magetospheric Phenomena
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AIRGLOW
ELECTROMAGNETIC RADIATION
ELEMENTS
FAR ULTRAVIOLET RADIATION
HYDROGEN
LIGHT SCATTERING
LYMAN LINES
MEASURING INSTRUMENTS
NONMETALS
RADIATIONS
SCATTERING
SOLAR RADIATION
SPECTRA
SPECTROMETERS
STELLAR RADIATION
ULTRAVIOLET RADIATION
ULTRAVIOLET SPECTRA