Unprecedented Imaging Capability Hard X-ray Detector Employing Scintillator-Deposited Charge-Coupled Device
スポンサーリンク
概要
- 論文の詳細を見る
We report on a new photon-counting detector possessing an unprecedented spatial resolution, a moderate spectral resolution and a high background-rejection capability for 0.1–100 keV X-rays. The detector consists of an X-ray charge-coupled device (CCD) and a scintillator. We coupled the scintillator to the surface of the back-illuminated (BI) CCD. Hard X-rays absorbed in the scintillator create hundreds or thousands of visible lights whose number is proportional to the incident X-ray energy. Since the quantum efficiencies of BI CCDs for visible lights are high, the charge collection efficiency for visible lights emitted from the scintillator becomes high. We investigate the spatial resolution of our device by measuring the contrast transfer function for 17.4 keV X-rays and find almost unity up to 10 line pairs per mm in the photon-counting mode. We thus perform a demonstrative experiment with a sharp edge and determine the spatial resolution to be ($10\pm 3$) μm which is twofold that of the CCD pixel size.
- Japan Society of Applied Physicsの論文
- 2004-06-15
著者
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Miyata Emi
Department Of Earth And Space Science Graduate School Of Science Osaka University
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Tawa Noriaki
Department Of Earth & Space Science Graduate School Of Science Osaka University
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MIKI Masami
Department of Earth & Space Science, Graduate School of Science, Osaka University
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KOIZUMI Gensuke
Department of Earth & Space Science, Graduate School of Science, Osaka University
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Miyaguchi Kazuhisa
Solid State Division Hamamatsu Photonics K. K.
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Tawa Noriaki
Department of Earth & Space Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
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MIYATA Emi
Department of Astrophysics, Faculty of Science, Osaka University
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