We report on measurements of second-order intensity correlations at the high brilliance storage ring PETRA III using a prototype of the newly developed Adaptive Gain Integrating Pixel Detector (AGIPD). The detector recorded individual synchrotron radiation pulses with an x-ray photon energy of 14.4 keV and repetition rate of about 5 MHz. The second-order intensity correlation function was measured simultaneously at different spatial separations that allowed to determine the transverse coherence length at these x-ray energies. The measured values are in a good agreement with theoretical simulations based on the Gaussian Schell-model.
Cite
@article{arxiv.1402.3092,
title = {Intensity interferometry of single x-ray pulses from a synchrotron storage ring},
author = {A. Singer and U. Lorenz and A. Marras and A. Klyuev and J. Becker and K. Schlage and P. Skopintsev and O. Gorobtsov and A. Shabalin and H. -C. Wille and H. Franz and H. Graafsma and I. A. Vartanyants},
journal= {arXiv preprint arXiv:1402.3092},
year = {2014}
}