PHYSICAL PROPERTIES OF THE RADIATION BELTS

Solar high-energy particles consist mainly of protons with energies greater than 80 Mev. Such protons are of primary importance where the biological effects of radiation are concerned. The neutron-albedo theory was proposed to explain the mechanism by which these protons become trapped in the geomagnetic field. The intensity of the trapped radiation is found to be dependent on the density of the atmosphere. Data for the 12 November 1960 solar event are cited as an example of the integrated flux and radiation dosages that may be present during a class 3+ solar flare. Such information is pertinent to the determination of radiation shielding requirements for manned spacecraft. (auth)