Ion motion in crossed fields and separation mechanism in ''archimedes plasma mass filter''

Trajectories of ions produced due to ionization of neutral particles (atoms, molecules) by electron impact in plasma are determined. The plasma is placed in crossed fields with positive radial electric field. It is shown that the light ions produced at the plasma periphery leave the plasma volume. Therefore, in the ''Archimedes Plasma Mass Filter'' device, not only heavy but also light ions can hit a radial collector, what have to reduce essentially the degree of separation of light and heavy components of nuclear waste. The dependence of currents of light and heavy ions along radius (to the radial collector) and along device axis (to the end collector) are calculated. The conclusion is made about impossibility of complete separation of light and heavy components of nuclear waste in their single pass through the ''Archimedes Plasma Mass Filter'' device.