NEUTRON-EMISSION DIAGNOSTICS OF A PLASMA IN THE MAGO DEVICE

Results of experiments in the MAGO device are presented. Measurements of the neutron spectra of the DT and DD reactions in the MAGO plasma c hamber are conducted by means of the flight-time technique. The obtain ed dispersion of the neutron pulse (of similar to 2 mu s duration) is found to exceed the estimate based on the assumption that the ion spec trum is Maxwellian with a temperature on the order of several keV. Abo ut 10% of the neutrons leaving the chamber along its axis in the direc tion of the plasma flow have a substantially higher energy than the es timated energy. The obtained results can be explained by assuming that the ion component of the plasma produced in the collisionless shock w ave in the MAGO chamber has a non-Maxwellian velocity distribution cha racterized by an average energy on the order of several keV.