Focusing ExB mass separator for space-charge dominated ion beams

摘要

The ExB mass separator provides a magnetic field B normal to the beam path and potential plate for applying an electric field normal to the magnetic field for maintaining the selected ions in beam 32 along a defined path. Along the path, after the major portion of the unwanted species are deflected from the beam, focus plates 34 and 36 focus the selected species toward the separator opening 38. Downstream potential plates 28 and 30 maintain the defined path for the selected species. P PTECHNICAL FIELD