The effects of radiation damage on the spectral resolution of the Chandrayaan-1 x-ray spectrometer


Conference Paper

The Chandrayaan-1 X-ray Spectrometer (C1XS) was launched onboard the Indian Space Research Organisation (ISRO) Chandrayaan-1 lunar mission in October 2008. The instrument consisted of 24 swept-charge device silicon X-ray detectors providing a total collecting area of ~24 cm2, corresponding to a 14° field of view (FWHM), with the ability to measure X-rays from 0.8 - 10 keV. During the 10 months the spacecraft was located in orbit around the Moon a number of solar flare X-ray events were detected, along with calibration data from X-ray sources housed inside the movable door of the instrument. This paper presents a study of the degradation in spectral resolution of the measured X-ray calibration lines, comparing those recorded mid way through the mission lifetime with ground based calibration data collected prior to the launch of the instrument. The radiation environment the detectors were subjected to is discussed in light of the actual radiation damage effects on the spectral resolution observed in flight. © 2010 SPIE.

Full Text

Duke Authors

Cited Authors

  • Walker, TE; Smith, DR; Howe, CJ; Kellett, BJ; Sreekumar, P; Grande, M

Published Date

  • September 7, 2010

Published In

Volume / Issue

  • 7742 /

International Standard Serial Number (ISSN)

  • 0277-786X

International Standard Book Number 13 (ISBN-13)

  • 9780819482327

Digital Object Identifier (DOI)

  • 10.1117/12.858648

Citation Source

  • Scopus