Elemental X-ray Imaging Using the Maia Detector Array: The Benefits and Challenges of Large Solid-Angle
The fundamental parameter method for quantitative SXRF and PIXE analysis and imaging using the dynamic analysis method is extended to model the changing X-ray yields and detector sensitivity with angle across large detector arrays. The method is implemented in the GeoPIXE software and applied to cope with the large solid-angle of the new Maia 384 detector array and its 96 detector prototype developed by CSIRO and BNL for SXRF imaging applications at the Australian and NSLS synchrotrons. Peak-to-background is controlled by mitigating charge-sharing between detectors through careful optimization of a patterned molybdenum absorber mask. A geological application demonstrates the capability of the method to produce high definition elemental images up to {approx}100 M pixels in size.
- Research Organization:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Sponsoring Organization:
- Doe - Office Of Science
- DOE Contract Number:
- DE-AC02-98CH10886
- OSTI ID:
- 985525
- Report Number(s):
- BNL-93737-2010-JA; NUIMAL; KA-04; TRN: US1006159
- Journal Information:
- Nuclear Instruments and Methods, Vol. 619, Issue 1-3; ISSN 0029-554X
- Country of Publication:
- United States
- Language:
- English
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