NASA NTRS · 19730016091
Cosmic Rays over the Upper Mid-West
Abstract
Differential energy spectra of cosmic ray protons and helium nuclei in the 100 to 260 MeV/nucleon were measured on balloon flights in the upper midwestern (U.S.) area. Solar cycle variations of atmospheric secondary protons were also investigated.
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Rygg, T. A.. 1972-12-01. Cosmic Rays over the Upper Mid-West. https://ntrs.nasa.gov/citations/19730016091
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