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The X-ray spectrometer is one of the satellite payloads on the Chang’E-2 satellite. The soft X-ray detector is one of the devices on the X-ray spectrometer, designed to detect the major rock-forming elements within the 0.5–10 ke V range on the lunar surface. In this paper, energy linearity and energy resolution calibration is done using a weak55 Fe source. Temperature and time effects are found not to give a large error. The total uncertainty of calibration is estimated to be within 5% after correction.
The X-ray spectrometer is one of the satellite payloads on the Chang’E-2 satellite. The soft X-ray detector is one of the devices on the X-ray spectrometer, designed to detect the major rock-forming elements within the 0.5 -10 ke V range on the lunar surface. In this paper, energy linearity and energy resolution calibration is done using a weak 55 Fe source. Temperature and time effects are found not to give a large error. The total uncertainty of calibration is estimated to be within 5% after correction.