Experimental research on the feature of an x-ray Talbot–Lau interferometer versus tube accelerating voltage*
Wang Sheng-Haoa)†, Margie P. Olbinadob), Atsushi Momoseb), Hua-Jie Hana), Hu Ren-Fanga), Wang Zhi-Lia), Gao Kuna), Zhang Kaic), Zhu Pei-Pingc), Wu Zi-Yua),c)‡
       
(a) Absorption image, (c) refraction signal, and (e) normalized visibility image, at a voltage of 35 kV; values of σ of (b) absorption, (d) refraction, and (f) visibility images versus accelerating voltage. Pixels in the rectangle (30 pixels × 100 = 3000 pixels) in panels (a), (c), and (e) are used to compute the values of σ of the absorption/refraction/visibility images, respectively.