DEVICE FOR GENERATING AN ION BEAM

摘要

The invention relates to a device for generating an ion beam. The inventive device comprises an ion source (2), a means (6) for extracting ions emitted by said source, a means (8) for accelerating ions thus extracted, a means (34) for selecting ions thus accelerated and an electrostatic optical system (10) that is intended to focus the ions thus selected along a first axis (Z1). Said device also comprises a means (F) for varying the distance (D) between the ion source and the ion extraction means, said distance being included along a second axis (Z) which is parallel to the first axis and which constitutes the axis of the beam of ions (14) emitted by the source. The invention is particularly suitable for the production of nano-structures.