Phase Contrast X-ray Imaging Signatures for Homeland Security Applications
Gratings-based phase contrast imaging is a promising new radiographic technique providing three distinct contrast mechanisms, absorption, phase, and scatter, using a conventional x-ray tube source. We investigate the signatures available in these three contrast mechanisms with particular attention towards potential homeland security applications. We find that the scatter mode in particular is sensitive to textured materials, enabling lowered detection limits than absorption for materials such as powders. We investigate the length scales to which our imaging system is sensitive.
- Research Organization:
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 1037544
- Report Number(s):
- PNNL-SA-76511; TRN: US201207%%350
- Resource Relation:
- Conference: IEEE Nuclear Science Symposium Conference Record (NSS/MIC 2010), October 30-November 6, 2010, Knoxville, Tennessee, 896-899
- Country of Publication:
- United States
- Language:
- English
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