The results of the X-ray damage to CCD may lead to below results:
• Increases in dark current • Increases in flatband voltage
The first, dark current, affects the system operating temperature used for the operations, whilst the second, changes to Vfb, can impact on the CCDs ability to function correctly, particularly when transferring charge.
Ultimately, these effects combine to affect the lifetime of the CCDs in any particular application, and impact on the working lifetime of the detector.
Using XRay Shielding FOP may help you extend the CMOS/CCD lifetime