Track of an Alpha Particle (IMAGE) University of Warsaw, Faculty of Physics Caption This is an example track of an alpha particle (energy 15 MeV) from the test beam registered with the demonstrator detector mini-eTPC. Read-out electrodes of the detector are parallel to the X-Y plane, the direction of the drift electric field is along the Z axis. Credit Source: Faculty of Physics, University of Warsaw Usage Restrictions the image may only be used with appropriate caption: Example track of an alpha particle (energy 15 MeV) from the test beam registered with the demonstrator detector mini-eTPC. Read-out electrodes of the detector are parallel to the X-Y plane, the direction of the drift electric field is along the Z axis. (Source: Faculty of Physics, University of Warsaw) 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.