Author(s): S. Huang, Y. Ding, Y. Feng, E. Hemsing, Z. Huang, J. Krzywinski, A. A. Lutman, A. Marinelli, T. J. Maxwell, and D. Zhu
X-ray free-electron lasers have been used to generate single spikes of hard x rays that are only 200 attoseconds long.
[Phys. Rev. Lett. 119, 154801] Published Tue Oct 10, 2017