The C1XS X-ray Spectrometer on Chandrayaan-1
Grande, M.; Foing, B.; Huovelin, J.; Howe, C. J.; Kellett, B. J.; Narendranath, S.; Maddison, B. J.; Crawford, I. A.; Shrivastava, A.; Sreekumar, P.; Pieters, C.; Swinyard, B.; Maurice, S.; Goswami, J. N.; Smith, D.; Cook, A.; Joy, K. H.; Rothery, D.; Bhandari, N.; Anand, M.; Okada, T.; Russell, S. S.; Wieczorek, M.; Duston, C. L.; Fernandes, V.; Gasnaut, O.; Holland, A.; Kochney, D.; Lawrence, D.; Wilding, M.
United Kingdom, India, Finland, France, United States, Netherlands, Japan
Abstract
The Chandrayaan-1 X-ray Spectrometer (C1XS) is a compact X-ray spectrometer for the Indian Space Research Organisation (ISRO) Chandrayaan-1 lunar mission. It exploits heritage from the D-CIXS instrument on ESA's SMART-1 mission. As a result of detailed developments to all aspects of the design, its performance as measured in the laboratory greatly surpasses that of D-CIXS. In comparison with SMART-1, Chandrayaan-1 is a science-oriented rather than a technology mission, leading to far more favourable conditions for science measurements. C1XS is designed to measure absolute and relative abundances of major rock-forming elements (principally Mg, Al, Si, Ca and Fe) in the lunar crust with spatial resolution ⩽25 FWHM km, and to achieve relative elemental abundances of better than 10%.