Noninterferometric quantitative phase imaging with soft x rays

Abstract

We demonstrate quantitative noninterferometric x-ray phase-amplitude measurement. We present results from two experimental geometries. The first geometry uses x rays diverging from a point source to produce high-resolution holograms of submicrometer-sized objects. The measured phase of the projected image agrees with the geometrically determined phase to within +/-7%. The second geometry uses a direct imaging microscope setup that allows the formation of a magnified image with a zone-plate lens. Here a direct measure of the object phase is made and agrees with that of the magnified object to better than +/-10%. In both cases the accuracy of the phase is limited by the pixel resolution.

Solid deuterium–tritium surface roughness in a beryllium inertial confinement fusion shell

“…[15] The simplest such method is the free-space propagation technique, which has been discussed extensively in the literature. [21][22][23][24][25][26][27][28][29] Briefly, a plane-wave or spherical-wave with high spatial coherence is incident on the object under study. Features in the object that correspond to sharp changes in the wave phase refract and diffract the x-rays.…”

X-ray imaging of cryogenic deuterium-tritium layers in a beryllium shell

“…[6,7] Phase-contrast enhanced imaging methods have been demonstrated for other materials with similar characteristics. [8][9][10][11][12][13][14][15] Recent advances in phase-contrast enhanced x-ray imaging using laboratory x-ray sources makes x-ray imaging of the solid D-T layer possible. [16][17][18] Calculations for phase-contrast x-ray imaging showed that the D-T surface should be rendered visible in the Be(Cu) shell using a micro-focus source.…”

Application of synchrotron radiation techniques to nanoscience

“…Phase differences between neighboring rays of the beam as it passes through the sample clearly shows up edges where the electron density changes rapidly in a direction perpendicular to the beam. (Stevenson et al, 2003;Allman et al, 2000) (see Fig. 4).…”