This star is the second of our festive Images of the Week for December. The image comes from Influence of wavelength and pulse duration on single-shot x-ray diffraction patterns from nonspherical nanoparticles by Katharina Sander et al.
The image itself is the scattering pattern produced in a simulation of shining x-rays onto silver nanoparticles. The x-rays are produced by a Free-Electron Laser, which you can read more about in JPhysB’s special issue on Frontiers of Free-Electron Laser Science Series II.
This work is licensed under a Creative Commons Attribution 3.0 Unported License. Thumbnail image adapted from Katharina Sander et al 2015 J. Phys. B: At. Mol. Opt. Phys. 48 204004. Copyright IOP Publishing 2015.