X-ray Imaging Spectrometer (XIS)
Description

Figure 2. Improvement in spectral resolution produced by charge injection. Shown are X-ray pulseheight spectra of an ⁵⁵Fe source under pre-irradiation (black), post-irradiation without charge injection (red), and post-irradiation with charge injection (green). Both the centroid and the width of the response function are degraded by the radiation, and improved by charge injection. In particular, charge injection returns the width of the spectral response function to within 10% of its pre-irradiation value.

Last updated: Wed May 10 17:33:21 EDT 2006 email: milleric@mit.edu