Figure 3. Gamma Cam at Work (image) American Physical Society Share Print E-Mail Caption Electron energy distribution changes as the radiation back-reaction force is increased by raising the magnetic field. Credit General Atomics Usage Restrictions None Share Print E-Mail 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.