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Proceedings Paper

Direct measurement of spreading of the primary electron cloud in the CCD
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Paper Abstract

We report here the experimental result between the x-ray interaction location and the split event. The x-ray interaction position can be localized in subpixel scale using the mesh experiment. We found that the center of gravity of the split even well correlated with the x-ray interaction position. We analyzed the data using two models, assuming the charge cloud shape: one is the rectangular model and the other is the Gaussian model. Although we could not distinguish between them, we obtained the standard deviation of the charge cloud shape of 1-2 micrometers for x-rays of Y-L, Ag-L and Ti-K. When the x-rays enter near the pixel boundary, the charge splits into adjacent pixel, in which we can achieve the accuracy of the x-ray interaction position of subpixel spatial resolution of 1.5-2.2 micrometers . We expect that the x-ray CCD can function as x-ray imager with subpixel resolution useful for the high spatial resolution optics.

Paper Details

Date Published: 10 November 1998
PDF: 10 pages
Proc. SPIE 3445, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy IX, (10 November 1998); doi: 10.1117/12.330321
Show Author Affiliations
Kumi Yoshita, Osaka Univ. (Japan) and Japan Science and Technology Corp. (Japan)
Hiroshi Tsunemi, Osaka Univ. (Japan) and Japan Science and Technology Corp. (Japan)
Junko Hiraga, Osaka Univ. (Japan) and Japan Science and Technology Corp. (Japan)
Keith C. Gendreau, NASA Goddard Space Flight Ctr. (United States)
Mark W. Bautz, Massachusetts Institute of Technology (United States)


Published in SPIE Proceedings Vol. 3445:
EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy IX
Oswald H. W. Siegmund; Mark A. Gummin, Editor(s)

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