Beam orbit storage effect in the isochronous cyclotrons

The BOS-effect is useful to apply in many isochronous cyclotron operated for today. Some general advantages are pointed out below: 1) the storage orbits effect may be utilized in order to increasing the internal space charge in a given extraction zone (for instance medical isotope production and other applications on internal beam); 2) returning of the unextracted beam to the space of quasi stable acceleration region (n ≥ 0), will caused decreasing activity of construction elements of cyclotron. This is very important problem by exploitation on high intensity internal beams; 3) because of avoiding the internal beam losses on constructions elements, as well longitudinal extension of the beam and also change of the angle in radial emittance during the second accelerations process it is to expect a magnifying of the extracted beam. (author). 7 refs, 21 figs