Non-Discharged Cathodes (IMAGE) DOE/Brookhaven National Laboratory Caption These are optical images of the non-discharged cathodes. Credit Stony Brook University/Brookhaven National Laboratory Usage Restrictions With attribution. 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.