The C1XS X-Ray Spectrometer on Chandrayaan-1

Grande, M.; Maddison, B. J.; Howe, C. J.; Kellett, B. J.; Sreekumar, P.; Huovelin, J.; Crawford, I. A.; Duston, C. L.; Smith, D.; Anand, M.; Bhandari, N.; Cook, A.; Fernandes, V.; Foing, B.; Gasnaut, O.; Goswami, J. N.; Holland, A.; Joy, K. H.; Kochney, D.; Lawrence, D.; Maurice, S.; Okada, T.; Narendranath, S.; Pieters, C.; Rothery, D.; Russell, S. S.; Shrivastava, A.; Swinyard, B.; Wilding, M. and Wieczorek, M. (2009). The C1XS X-Ray Spectrometer on Chandrayaan-1. Planetary and Space Science, 57(7) pp. 717–724.



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%.

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