Abstract
Actinic solar UV radiation in the band 250–350 nm has most deleterious biological effects such as erythema, protein/DNA/RNA rupture, and carcinogenic lesion. Even a short-term extra vehicular activity (EVA) of an astronaut accumulates a UV dose > 30 J/m2 which is the critical exposure limit on eye and skin as per ICNIRP guidelines. A reliable UV radiation risk assessment in space is a mandatory step for the development of countermeasures and long-duration mission planning in human spaceflight. A three-channel (UV-A, UV-B and UV-C) dosimeter based on 4H-SiC/Pd Schottky UV detectors for real-time monitoring of actinic solar UV irradiance was realized. Resolution of the instrument was estimated to be 2.34 mW/m2, 1.56 mW/m2 and 0.76 mW/m2 with nonlinearity lower than 5% in the measurement range.
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Acknowledgements
Authors would like to thank Shri. M. Sankaran, Director, URSC, and Dr. K. V. Sriram, Director, LEOS, for their constant support while providing necessary resources to carry out research and development of dosimeter for Gaganyaan mission.
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Sumesh, M.A., Karanth, S.P. SiC dosimeter for solar ultraviolet exposure monitoring. ISSS J Micro Smart Syst 12, 127–132 (2023). https://doi.org/10.1007/s41683-023-00118-y
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DOI: https://doi.org/10.1007/s41683-023-00118-y