Popis: |
A method for the production of short ion pulses from the source with an additional anode is proposed. For the production of short ion current pulses the negative bias is applied to an additional anode to suppress the extracted current and then, at a desirable moment of the discharge pulse, a short positive pulse is applied to provide a pulse of extracted current. The possibility of selective ion emission by means of the additional anode potential oscillation with frequency, proportional to the ion cyclotron frequency of the selected sort of ions, is considered. |