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Proceedings Paper

Using a charge-coupled device (CCD) to simultaneously gather x-ray fluorescence (XRF) and x-ray diffraction (XRD) information
Author(s): S. Cornaby; T. D. Grow; Arturo Reyes-Mena; Paul W. Moody; A. Stradling; T. Hughes; Larry V. Knight
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Paper Abstract

A breadboard setup constructed at MOXTEK, Inc., is capable of capturing both x-ray diffraction (XRD) and x-ray fluorescence (XRF) information simultaneously using a charge-coupled device (CCD) as the x-ray detector. This preliminary setup will lead to a prototype simultaneous XRD/XRF instrument. NASA is funding the project because it could be used for future Mars missions for analysis of rocks. The instrument uses a CCD to capture both the energy and the position of an incoming x-ray. This is possible because each pixel acts as a spatially addressable energy- dispersive detector. A powdered sample of material is placed in front of the CCD, which in turn is bombarded by a collimated x-ray beam. The instrument's critical features, the x-ray source, collimation optics and x-ray transparent windows need to be optimized in the size and power to allow the instrument to be portable. In this paper the instrument's design parameters as well as the properties of both the CCD as x-ray detector and the low-power consumption tube are investigated.

Paper Details

Date Published: 25 January 2002
PDF: 7 pages
Proc. SPIE 4497, X-Ray and Gamma-Ray Instrumentation for Astronomy XII, (25 January 2002); doi: 10.1117/12.454227
Show Author Affiliations
S. Cornaby, MOXTEK, Inc. (United States)
T. D. Grow, MOXTEK, Inc. (United States)
Arturo Reyes-Mena, MOXTEK, Inc. (United States)
Paul W. Moody, MOXTEK, Inc. (United States)
A. Stradling, MOXTEK, Inc. (United States)
T. Hughes, MOXTEK, Inc. (United States)
Larry V. Knight, Brigham Young Univ. (United States)

Published in SPIE Proceedings Vol. 4497:
X-Ray and Gamma-Ray Instrumentation for Astronomy XII
Kathryn A. Flanagan; Oswald H. W. Siegmund, Editor(s)

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