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Direct Detection Cameras

Photonics Spectra
Jun 2011
Princeton InstrumentsRequest Info
 
Princeton Instruments’ Pixis-XB series direct detection cameras are designed for extremely low flux imaging and spectroscopy applications in the x-ray energy range between ~3 and 20 keV. The cameras feature front- and back-illuminated deep-depletion CCDs with formats from 1340 x 400 to 1340 x 1300 pixels. They provide high sensitivity and a high dynamic range. They can run from a laptop computer with the USB 2.0 interface, and full triggering/shutter control capabilities are incorporated, operating at 100 kHz and 2 MHz. The cameras are suited for medium x-ray applications such as photon correlation and intensity fluctuation spectroscopy, diffraction and lithography. They deliver deep cooling to better than —70 °C, achieved via a thermoelectric Peltier system, in a compact package offering ultrahigh vacuum.


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GLOSSARY
back-illuminated CCD
A CCD that has been reduced in thickness by etching so that light passes through the back layers of the CCD. This type of CCD typically has higher sensitivity, especially to blue light, and higher quantum efficiency than front-illuminated CCDs, because the light is not required to pass through the CCD's gate structure.
diffraction
As a wavefront of light passes by an opaque edge or through an opening, secondary weaker wavefronts are generated, apparently originating at that edge. These secondary wavefronts will interfere with the primary wavefront as well as with each other to form various diffraction patterns.  
shutter
A mechanical or electronic device used to control the amount of time that a light-sensitive material is exposed to radiation.
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