A charge-coupled device (CCD) is a standard imager in optical region in which the image quality is limited by its pixel size. CCDs also function in X-ray region but with substantial differences in performance. An optical photon generates only one electron while an X-ray photon generates many electrons at a time. We developed a method to precisely determine the X-ray point of interaction with subpixel resolution. In particular, we found that a back-illuminated CCD efficiently functions as a fine imager. We present here the validity of our method through an actual imaging experiment.
@article{arxiv.astro-ph/0204014,
title = {Direct X-ray Imaging of $\mu$m precision using Back-Illuminated CCD},
author = {E. Miyata and M. Miki and H. Tsunemi and J. Hiraga and H. Kouno and K. Miyaguchi},
journal= {arXiv preprint arXiv:astro-ph/0204014},
year = {2009}
}
Comments
7 pages, 2 figures. Accepted for publication of Japanese Journal of Applied Physics Express Letter. High resolution file is available from http://wwwxray.ess.sci.osaka-u.ac.jp/~miyata/paper/bi_sharp_res.pdf