title: Heavy ion measurement on LDEF.
abstract: A stack of CR-39 track detectors was exposed on the NASA satellite LDEF and recovered after almost 6 years in space.  The quick look analysis yielded heavy ion tracks on a background of low energy secondaries from proton interactions.  The detected heavy ions show a steep energy spectrum which indicates a radiation belt origin.
authors.affiliation: Institut für Reine und Angewandte Kernphysiks, Christian-Albrechts-Universität zu Kiel, Germany.
authors.forename: R
authors.initials: R
authors.lastname: Beaujean
authors.forename: D
authors.initials: D
authors.lastname: Jonathal
authors.forename: W
authors.initials: W
authors.lastname: Enge
mesh_terms: D003359:Cosmic Radiation; D004867:Equipment Design; D007477:Ions; D011522:Protons; D011834:Radiation Monitoring / Q000295:instrumentation*; D011874:Radiometry; D013026:Space Flight; D018531:Spacecraft / Q000295:instrumentation*; D013057:Spectrum Analysis
chemical_list: D007477:Ions; D011522:Protons