Abstract
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This article presents a study of the response of the silicon on insulator (SOI) microdosimeter with 3-D sensitive volumes (SVs) to 400 MeV/u 16O and 500 MeV/u 56Fe ions mimicking galactic cosmic rays outside and inside the International Space Station (ISS). An average quality factor (Q) and the dose equivalent ( H ) of the radiation field were obtained experimentally, and the results were compared with GEANT4 simulations.