| Abstract: | The nonuniform distribution of the heat losses and of electric-current density in the profiled channel of a coaxial pulsed electromagnetic plasma accelerator was noted in [1].It will be shown below that this nonuniformity is the main cause of high heat losses in the channel. By reducing the nonuniformity in the discharge distribution, we could experimentally reduce losses in the accelerating electrodes and increase the energy efficiency of the accelerator from 45 to 60%.I thank G. M. Bam-Zelikovich for attention to the work and S. V. Gusev and E. I. Parfenova for assistance in the experiments. |
