Accession Number : AD0704178

Title :   ON THE ORIGIN OF THE VAN ALLEN PROTONS.

Descriptive Note : Progress rept.,

Corporate Author : IOWA UNIV IOWA CITY DEPT OF PHYSICS AND ASTRONOMY

Personal Author(s) : Pizzella,G. ; Knorr,G. ; Randall,B. A.

Report Date : MAR 1970

Pagination or Media Count : 29

Abstract : The experimental data on protons trapped in the Van Allen belt obtained with the Injun 5 satellite are compared with a model recently proposed. The experimental data show a minimum in the energy spectrum which is predicted by the theory under the assumption that the wave energy be proportional to the plasma density. Furthermore, the experimental data for 2<L<6 and for energies from 300 keV to 2 MeV can be described, as predicted, by a universal energy spectrum. The model also describes the experimental result of other authors that (E sub o) = approx. (L to the -3 power) at the equator, E sub o being the e-folding energy. (Author)

Descriptors :   (*VAN ALLEN RADIATION BELT, PROTONS), PARTICLE SPECTRA, KINETIC ENERGY, INTENSITY, LEAST SQUARES METHOD, CURVE FITTING, MATHEMATICAL MODELS

Subject Categories : Atmospheric Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE