Figure 1 (IMAGE) American Physical Society Caption Cross section of a tokamak (left) with exhaust region highlighted in green and simulation box in red. Snapshots of electron density (right) from simulations show that including neutral particles produces less. Credit T. Bernard, General Atomics Usage Restrictions Use with credit License Original 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.