Single and multi-pulse based X-ray photon correlation spectroscopy

The ability of pulsed nature of synchrotron radiation opens up the possibility of studying microsecond dynamics in complex materials via speckle-based techniques. Here, we present the study of measuring the dynamics of a colloidal system by combining single and multiple X-ray pulses of a storage ring. In addition, we apply speckle correlation techniques at various pulse patterns to collect correlation functions from nanoseconds to milliseconds. The obtained sample dynamics from all correlation techniques at different pulse patterns are in very good agreement with the expected dynamics of Brownian motions of silica nanoparticles in water. Our study will pave the way for future pulsed X-ray investigations at various synchrotron X-ray sources using individual X-ray pulse patterns.

Automated summary

The pulsed nature of synchrotron radiation allows for the study of microsecond dynamics in complex materials through speckle-based techniques. In this study, we measure the dynamics of a colloidal system by combining single and multiple X-ray pulses from a storage ring. We use speckle correlation techniques at various pulse patterns to collect correlation functions ranging from nanoseconds to milliseconds. The obtained dynamics are in good agreement with the expected dynamics of Brownian motions, demonstrating the potential of using individual X-ray pulse patterns for future pulsed X-ray investigations.