Accession Number : AD0439702

Title :   HIGH-LATITUDE BOUNDARY OF THE OUTER RADIATION ZONE AT 1000 KM,

Corporate Author : NATIONAL RESEARCH COUNCIL OF CANADA OTTAWA (ONTARIO) DIV OF PURE PHYSICS

Personal Author(s) : McDiarmid,I. B. ; Burrows,J. R.

Report Date : 09 DEC 1963

Pagination or Media Count : 11

Abstract : Particle detectors on the Alouette satellite have been used to determine the average highlatitude boundary of the outer radiation zone at 1000 km as a function of local time. The boundary for electrons with energies greater than 40 kev is approximately symmetrical with respect to the noon-midnight meridian and occurs at the highest latitude near local noon, shifting between 4 and 5 degrees to its lowest value near local midnight. There is very little difference in the average boundaries of so-called trapped and precipitated electrons. The results are discussed in terms of measurements of electrons with similar energies in the equatorial plane and models of the earth's magnetic field. (Author)

Descriptors :   (*VAN ALLEN RADIATION BELT, HEIGHT FINDING), GEIGER COUNTERS, METEOROLOGICAL SATELLITES, DIURNAL VARIATIONS, ELECTRONS

Distribution Statement : APPROVED FOR PUBLIC RELEASE