Boundary driven magnetic field (IMAGE) Tata Institute of Fundamental Research Caption Magnetic field in beam-plasma interaction: The field begins at the beam boundary and is larger than that in the bulk. Credit Ratan Bera Usage Restrictions None 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.