title: Neutron and Proton Dosages in the Upper Atmosphere from Solar Flare Radiation.
abstract: The radiation dosage from secondary neutrons as well as from primary and secondary protons in the earth's atmosphere during solar particle events is calculated as a function of the solar proton flux, atmospheric depth, and geomagnetic-cutoff rigidity. The dosage in rems from secondary neutrons exceeds the dosage from protons below 30 g/cm(2) of residual atmosphere. Neutron dosages in rads are less than the dosage from primary protons at all depths above 100 g/cm(2). The maximum neutron dose to travelers in supersonic aircraft during solar particle events of the magnitude observed during the last solar cycle would be of the order of I rem.
authors.forename: E J
authors.initials: EJ
authors.lastname: Flamm
authors.forename: R E
authors.initials: RE
authors.lastname: Lingenfelter