Ahmed and Lu (IMAGE) DOE/Lawrence Berkeley National Laboratory Caption Senior staff scientist Musahid Ahmed (left) and postdoctoral researcher Wenchao Lu near the Advanced Light Source (ALS) at Berkeley Lab on May 21, 2021. They used a special technique, which Ahmed adapted 10 years ago at the ALS, to stop a so-called "radical propargyl self-reaction" before soot forms. Credit Thor Swift/Berkeley Lab 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.