SEVERAL OBSERVATIONS OF LOW-ENERGY PROTONS AND ELECTRONS IN THE EARTH'S MAGNETOSPHERE WITH OGO 3.
IOWA UNIV IOWA CITY DEPT OF PHYSICS AND ASTRONOMY
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An initial survey is made of low-energy electrons and protons over geocentric radial distances ranging from 3 RE to 15 RE RE, earth radius with measurements obtained with a sensitive electrostatic analyzer device borne on the earth-satellite OGO 3. It is intended to provide an introduction to several of the characteristics of the spatial distributions of electrons and protons over an energy range 200 eV to 50 keV within the earths magnetosphere near the magnetic equatorial plane. Several features of the charged particle distributions at the boundary of durable trapping of charged particles by the geomagnetic field at geocentric radial distances approximately 8 RE in the evening sector of the earths magnetosphere are clarified. Simultaneous observations of the differential energy spectrums of electrons and protons, separately, over the aforementioned energy range are presented for regions in the earths magnetic tail and deep within the radiation zones and will be important in delineating prominent acceleration mechanisms providing local acceleration of charged particles within the earths magnetosphere and its environs.
- Atmospheric Physics