SOLAR PARTICLE OBSERVATIONS INSIDE THE MAGNETOSPHERE DURING THE 7 JULY 1966 EVENT.
Progress rept. for Jul 67,
IOWA UNIV IOWA CITY DEPT OF PHYSICS AND ASTRONOMY
Pagination or Media Count:
Observations of protons emitted by the 7 July 1966 solar flare at N34, W47 with the low-altitude--high-latitude University of Iowa satellite Injun IV show the following. a High energy Ep about 27 MeV protons arrive promptly over the earths polar caps and decay in a manner consistent with diffusive propagation. b The counting rate due to protons in the interval 0.52 or Ep or 4 MeV and moving normal to the magnetic vector shows a double plateau as the satellite moves over the polar caps. c The position of the knee for protons in the above energy interval varies from L about 7.5 to L about 6.3 at magnetic local times of about 4.5 hours and about 11.5 hours, respectively. d After the sudden commencement the latitude gap between trapped protons and solar protons disappears, suggesting that some solar protons may become trapped in the earths radiation belts. e Simultaneous observations with similar detectors inside the magnetosphere Injun IV and outside the magnetosphere Explorer 33 show that low energy about 0.5 MeV protons have essentially immediate acess from the interplanetary space to the polar caps of the earth. Finally, the theoretical implications of these results are discussed. Author
- Atmospheric Physics