5 papers
Nonlinear phenomena in X-ray fluorescence from single nanoparticles under extreme conditions
Sebastian Cardoch, Tamme Wollweber, Sarodi Jonak Dutta +26
Materials exposed to intense femtosecond X-ray pulses with energies above their K-shell absorption edge can enter an extremely ionized state, which could give rise to nonlinear phe…
Single-particle incoherent diffractive imaging and amplified spontaneous emission in copper nanocubes
Tamme Wollweber, Sarodi Jonak Dutta, Zhou Shen +26
We demonstrate element-specific incoherent diffractive imaging (IDI) of single copper nanocubes using intensity correlations of K fluorescence at a hard X-ray free-electron lase…
On-sky demonstration of an ultra-fast intensity interferometry instrument utilizing hybrid single photon counting detectors
Verena G. Leopold, Sebastian Karl, Jean-Pierre Rivet +1
Intensity interferometry is a reemerging astronomical technique for performing high angular resolution studies at visible wavelengths, benefiting immensely from the recent improvem…
TEMPUS, a Timepix4-based system for event-based X-rays detection
Jonathan Correa, Alexandr Ignatenko, David Pennicard +16
A readout system based on the Timepix4 ASIC, is being developed for photon science. The TEMPUS detector can be operated in two distinct modes: a photon counting mode, which allows…
Phase Retrieval in Incoherent Diffractive Imaging using higher-order photon correlation functions
M. Bojer, J. Eckert, S. Karl +2
To obtain spatial information about an arbitrary object in x-ray structure analysis, the standard method is to measure the intensity in the far field, i.e., the first-order photon…