Phase-contrast imaging with micro-focus X-ray source

liu yuan-qiong; gao dang-zhong; liu li-xiang; luo qing; ye cheng-gang

Volume 18 Issue 12

Dec. 2006

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Abstract

References

Article Navigation > High Power Laser and Particle Beams > 2006 > 18(12): 0-

huang zu xin, jiang xiao dong, ren huan, et al. Effect of beam diameter for high accuracy laser damage testing[J]. High Power Laser and Particle Beams, 2002, 14.

Citation:

liu yuan-qiong, gao dang-zhong, liu li-xiang, et al. Phase-contrast imaging with micro-focus X-ray source[J]. High Power Laser and Particle Beams, 2006, 18.

huang zu xin, jiang xiao dong, ren huan, et al. Effect of beam diameter for high accuracy laser damage testing[J]. High Power Laser and Particle Beams, 2002, 14.

Citation:

liu yuan-qiong, gao dang-zhong, liu li-xiang, et al. Phase-contrast imaging with micro-focus X-ray source[J]. High Power Laser and Particle Beams, 2006, 18.

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Phase-contrast imaging with micro-focus X-ray source

1.
Research Center of Laser Fusion,CAEP,P.O.Box 919-987,Mianyang 621900,China;
2.
Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800,China

Publish Date: 2006-12-15

Abstract

Abstract

In conventional radiography, X rays which pass through an object along different paths are differentially absorbed, and the intensity pattern of the emerging beam records the distribution of absorbing materials within the sample. A non-conventional X-ray radiography-phase-contrast imaging is described, which records variations of the phase of the emerging radiation, shows dramatic contrast enhancement for low density or weakly absorbing materials with hard X-ray. A general treatment of X-ray image formation by Fresnel diffraction theory is presented. According to the optical transfer function, the distance of object-image and spatial frequency on the imaging phase-contrast is discussed. Resolution and contrast are the criteria used to specify the visibility of an image, resolution in turn
- phase-contrast imaging,
- absorption-contrast imaging,
- fresnel diffraction,
- spatial coherence,
- optical transfer function

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