Daytime trapped electron intensities at high latitudes at 1100 kilometers

Using data from the polar orbiting satellite 1963 38C, we have studied the behavior of day-side intensities of trapped electrons in the energy ranges Ee ≥ 280 kev and ≥1.2 Mev during the period October 1 through November 1, 1963. During this time the satellite orbital plane was within 30° of the earth-sun line. The data show (a) at L = 2 no apparent correlation of charged particle intensities with magnetic activity, (b) at L = 2.5 and 3 the trapped electrons are effected only by intense magnetic activity, (c) in the range 3.5 ≲ L ≲ 6 the trapped intensities follow the general trend of the magnetic activity including the 27-day recurring increase in the level of magnetic activity, and (d) above L ∼ 6 the trapped electrons become much more sensitive to the detailed fluctuations in the magnetic activity indices. Quiet time data show a steady decay in trapped intensities for L ≥ 3. Time delays in the particle response to magnetic variations are found to increase with both increasing energy and L value. A rough correlation of the energy spectrum with magnetic activity is obtained.