Physics
Scientific paper
Feb 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985jgr....90.1413l&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 90, Feb. 1, 1985, p. 1413-1423. Sponsorship: Centre National d'Etudes Spa
Physics
88
Interplanetary Medium, Lyman Alpha Radiation, Prognoz Satellites, Solar Wind, Charge Exchange, Ionization Coefficients, Particle Flux Density, Solar Protons
Scientific paper
New evidence for a latitudinal decrease of the solar wind mass flux is presented from observations of the interplanetary Lyman alpha emission collected in 1976 and 1977 with satellites Prognoz 5 and 6. The flow of interstellar hydrogen atoms in the solar system is ionized by EUV solar radiation and charge exchange with solar wind protons which accounts for about 80% of the total ionization rate. The resulting gradual decrease of the neutral H density from the upwind region down to the downwind region observed from Ly α intensity measurements allowed the determination of the absolute value of the total ionization rate β for one H atom at 1 AU against ionization. Collected in 1976 and 1977 at five places in the solar system, the measurements are compared to different models.
Bertaux Jean Loup
Kurt Victoria G.
Lallement Rosine
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