Vortex Exhaust Mode (IMAGE) American Institute of Physics Caption This is the vortex exhaust mode on low-power cylindrical Hall thruster. Credit Wei Liqiu, Harbin Institute of Technology, China Usage Restrictions This image may be used only with appropriate credit. 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.