TY  - JOUR
A1  - Shashev, Yury
A1  - Kupsch, Andreas
A1  - Lange, Axel
A1  - Müller, Bernd R.
A1  - Bruno, Giovanni
T1  - Improving the visibility of phase gratings for Talbot-Lau X-ray imaging
JF  - Materials testing : Materialprüfung ; materials and components, technology and application
N2  - Talbot-Lau interferometry provides X-ray imaging techniques with significant enhancement of the radiographic contrast of weakly absorbing objects. The grating based technique allows separation of absorption, refraction and small angle scattering effects. The different efficiency of rectangular and triangular shaped phase gratings at varying detector distances is investigated. The interference patterns (Talbot carpets) are modeled for parallel monochromatic radiation and measured by synchrotron radiation. In comparison to rectangular shapes of phase gratings much higher visibility is obtained for triangular shapes which yield enhanced contrast of a glass capillary test specimen.
KW  - Talbot-Lau interferometry
KW  - phase grating
KW  - synchrotron imaging
KW  - visibility
KW  - X-ray refraction
Y1  - 2016
U6  - https://doi.org/10.3139/120.110948
SN  - 0025-5300
VL  - 58
SP  - 970
EP  - 974
PB  - Hanser
CY  - München
ER  -