Patent ID: 8049180

Claim:
Ion beam device, comprising: an ion beam source for generating an ion beam, the ion beam being emitted along a first axis; an aperture unit adapted to shape the ion beam; an achromatic deflection unit adapted to achromatically deflect ions of the ion beam having a predetermined mass by a deflecting angle such that ions having the same mass but different velocities are deflected by substantially the same deflection angle, the achromatic deflection unit comprising: an electric field generating component for generating an electric field; and a magnetic field generating component for generating a magnetic field substantially perpendicular to the electric field, wherein the electric field generating component and the magnetic field generating component are connected to adjustable DC power sources; a mass separation aperture adapted for blocking ions with a mass different from the predetermined mass and for allowing ions having the predetermined mass to trespass the mass separation aperture; and an objective lens having a second optical axis, wherein the second optical axis is inclined with regard to the first axis and the achromatic deflection unit is adapted to deflect the ion beam from the first optical axis to the second optical axis.