Acceleration of heavy ion beams at the IYaF AN RK cyclotron

Results of experiments of heavy ion beams acceleration at the third harmonic of RF accelerating voltage in the isochronous cyclotron with energy coefficient of K = 50 and with application of the direct-heated Penning ion source having arc pulse supply and enhanced anode voltage are presented. Two-, three- and four-charge internal beams of carbon, nitrogen and oxygen ions having the intensity of 1 - 13 μA ion phase motion and the formation of acceleration regimes to provide optimal extraction of ions are considered. 5 refs., 3 figs