Although X-ray focusing optics to enhance the intensity have progressed, achieving a single-nanometre focal spot that fully exploits the source performance remains elusive. Aberrations arising from reflective optical schemes noticeably degrade the focal spot, even in the presence of inevitably slight ...
up to 1022–1024 W/cm2 a conversion efficiency of visible light both to soft and to hard X-rays may achieve ~ 30–50%, which opens a path towards many applica- tions of recently developing petawatt-class lasers, particular with a high repetition rate and femtosecond pulse duration....
chemical, and biological systems, but only a handful of wavelengths are directly produced by solid-state lasers, necessitating efficient high-power frequency conversion. Relativistic plasma mirrors generate broadband power-law spectra, that may span the gap between petawatt-class infrared laser facilities...
[10,11]. To date, this method is still restricted to visible light, due to the complexity of using X-ray optics. In the literature there can be found numerical simulations emulating the operating mode of an X-ray plenoptic system with limited-angle tomography setups [12,13]. A ...
The defined criterion leads to a necessary number of pixels of 𝑁ROI=12NROI=12 for the dark-field. For this example, detection is thus possible for an ink-covered area of 0.013 mm22 or a square of 0.11 mm edge length. Using the same definition for the attenuation data, the required ...
Graph-based few-shot learning with transformed feature propagation and optimal class allocation. Neurocomputing 2022, 470, 247–256. [Google Scholar] [CrossRef] Zach, M.; Kobler, E.; Pock, T. Computed Tomography reconstruction using generative energy-based priors. arXiv 2022. [Google Scholar] ...
This work aims to evaluate the application of optical and X-ray spectroscopy methods to determine the effect of alpha-emitting radionuclides on the properties of solid-state nuclear track detectors (SSNTD) based on nitrocellulose during their detection.
With the PW class driver, a 10 Hz repetition rate, and optimized laser and target conditions, the laser-driven Betatron source will provide over 1011 photons per shot at the Gammatron beamline. The expected source parameters in Betatron and ICS schemes at the ELI Gammatron beamline are given ...
free-electron lasers; ultrafast X-ray pulses; cross-correlated X-ray experiment; split and delay optical devices: non-linear optics; physical optics; optical feedback1. Introduction Free-electron lasers (FELs) are the most advanced class of light-sources by virtue of their unique capability to ...
phase of operation, the effective pulse number and/or the effective repetition rate shall be constrained [21], such that significant thermal effects can be avoided. In the long run, a cooling system shall be implemented, for which the mechanical stability of the optics must be carefully ...