Novel Photon-Counting Detector for 0.1-100 keV X-ray Imaging Possessing High Spatial Resolution

Details Novel Photon-Counting Detector for 0.1-100 keV X-ray Imaging Possessing High Spatial Resolution Novel Photon-Counting Detector for 0.1-100 keV X-ray Imaging Possessing High Spatial Resolution

2003-08-25

arxiv.org/abs/astro-ph/0308423v1

Astronomy and Astrophysics

Astrophysics

7 pages, 4 figures. Accepted for publication of Japanese Journal of Applied Physics Letter

Scientific paper

10.1143/JJAP.42.L1201

We report on a new photon-counting detector possessing unprecedented spatial resolution, moderate spectral resolution and high background-rejection capability for 0.1-100 keV X-rays. It consists of an X-ray charge-coupled device (CCD) and scintillator. The scintillator is directly deposited on the back surface of the X-ray CCD. Low-energy X-rays below 10 keV can be directly detected in the CCD. The majority of hard X-rays above 10 keV pass through the CCD but can be detected in the scintillator, generating optical photons there. Since CCDs have a moderate detection efficiency for optical photons, they can again be absorbed by the CCD. We demonstrate the high spatial resolution of 10 micron order for 17.4 keV X-rays with our prototype device.

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