X-ray Laser Pulse (IMAGE) Lomonosov Moscow State University Caption Determining the structure of an X-ray laser pulse based on the angular streaking of photoelectrons. Credit Nikolay Kabachnik Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.