* Institut für Kernphysik der Universität Kiel, Olshausenstr. 40/60, D-24118, Kiel, Germany
** DLR Institute of Aerospace Medicine, Radiobiology Section, D-51140, Köln, Germany
Abstract:
Nuclear track detectors were used to measure the integral Linear Energy Transfer (LET) spectra above 1 GeV per cm water behind the complex material shielding inside a spacecraft. The measurements are compared with predictions of the contribution of high charge, high energy HZE particles of the galactic cosmic radiation taking into account the influence of solar and geomagnetic modulation and shielding by matter.