Observation of high energy ion tail in the SINP tokamak plasma

The present study examines the possibility of acceleration of ions by large scale magnetohydrodynamic activities in the SINP tokamak. The analysis is done with a retarding field ion energy analyzer looking into the plasma in the tangential direction. The experiment shows the presence of high energy ions escaping the confinement zone along with the bulk low energy ions. This process seems to have a close connection with electron acceleration due to the electric field of the m∕n=2∕1 tearing modes.