Journal
RADIATION MEASUREMENTS
Volume 95, Issue -, Pages 37-43Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.radmeas.2016.11.002
Keywords
Space radiation; Solid state nuclear track detector; CR-39; Nuclear fragmentation; Secondaries; High-LET radiation
Categories
Funding
- National Research Nuclear University MEPhI (Moscow Engineering Physics Institute) Academic Excellence Project [02.a03.21.0005]
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Different approaches for the track image analysis in CR-39 detectors exposed on board the spacecraft are presented. The main attention is paid to the tracks of short range, high-LET secondary fragments. The appropriate method for the analysis and measurement of such track events is described. Detectors were irradiated on board the Russian FOTON-M No. 4 microgravity and bioscience research spacecraft. Chemical treatment, track scanning and data processing were carried out by Russian and Japanese research teams independently using the original approaches. The semi-automated track scanning technique and conventional track data processing were used in Japan. The manual track scanning and alternative track data processing were employed in Russia. Comparative analysis with the conventional method is carried out. The manual event analysis proved to be more informative at high-LET region. The contribution of short range secondaries to the total LET spectrum and total space radiation doses is evaluated. (C) 2016 Elsevier Ltd. All rights reserved.
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