Development towards high-resolution kHz-speed rotation-free volumetric imaging

Abstract

X-ray multi-projection imaging (XMPI) has the potential to provide rotation-free 3D movies of optically opaque samples. The absence of rotation enables superior imaging speed and preserves fragile sample dynamics by avoiding the centrifugal forces introduced by conventional rotary tomography. Here, we present our XMPI observations at the ID19 beamline (ESRF, France) of 3D dynamics in melted aluminum with 1000 frames per second and 8 µm resolution per projection using the full dynamical range of our detectors. Since XMPI is a method under development, we also provide different tests for the instrumentation of up to 3000 frames per second. As the high-brilliance of 4th generation light-sources becomes more available, XMPI is a promising technique for current and future X-ray imaging instruments.

Multibeam X-ray tomography optical system for narrow-energy-bandwidth synchrotron radiation

“…After submission of the present paper, X-ray multi-projection imaging at an undulator source using three beams was reported. 28) The 3D reconstruction was obtained from only two beams and had to be reconstructed using a deep-learning algorithm 29) due to the very low number of projections in a comparatively small angular range. The present optical system provides about 10 times more projections in an angular range close to 180°, which makes it suitable for general tomography.…”