Investigation of the Interaction between the S3-2 Satellite and Its Environmental Spaceplasma.
Final rept. 1 May-30 Sep 78,
MICHIGAN UNIV ANN ARBOR SPACE PHYSICS RESEARCH LAB
Pagination or Media Count:
Ion and electron measurements from the planar ion probes and the spherical electron probe onboard the S3-2 satellite were used in order to investigate the distribution of ion current around the satellite in the closest proximity to the surface. The preliminary results obtained demonstrate in a quantitative manner the dependence of alpha faltitude and alpha fR sub D for 24R sub D56 and 10abs. vol. Phi sub N18. We find that alpha at an altitude of about 300 km is about 2.5 to 3 orders of magnitude smaller than alpha at an altitude of about 500-600 km and alpha at this latter altitude range is by about one order of magnitude smaller than alpha at about 1100 km. We also find alpha for R sub D approx. 54-56 to be 3.5 order of magnitude small er than alpha for R sub D approx. 24-30. The investigation already performed yielded new results.