摘要:
An ion beam apparatus is provided, the ion beam apparatus comprising a movable ion source, a condenser lens, an aperture, and a scanning unit disposed between the condenser lens and the aperture, said scanning unit being adapted to scan an ion beam across the aperture. Furthermore, a method for aligning components of an ion beam apparatus is provided, comprising the steps of: producing an ion beam by means of an ion source, producing a first image of a beam cross section of the ion beam at a first voltage of a condenser lens, producing a second image of the beam cross section of the ion beam at a second voltage of the condenser lens, and positioning the ion source so that the centers of the first and second images coincide.
摘要:
A charged particle beam device is provided, including: a charged particle beam source adapted to generate a charged particle beam on an axis; an optical aberration correction device and an objective lens device, which define a corrected beam aperture angle adjusted to reduce diffraction; and a charged particle beam tilting device; wherein the optical aberration correction device and the objective lens device are adapted to provide the charged particle beam with a beam aperture angle smaller than the corrected beam aperture angle; and wherein the charged particle beam tilting device is adapted to provide a beam tilt angle which is equal or less than the corrected beam aperture angle. Further, a method of operating a charged particle beam device is provided.
摘要:
It is provided a charged particle beam device for inspecting a specimen, comprising a charged particle beam source adapted to generate a primary charged particle beam; an objective lens device adapted to direct the primary charged particle beam onto the specimen; and a detector device comprising one or more charged particle detectors adapted to detect a secondary charged particle beam generated by the primary charged particle beam at the specimen and passing through the objective lens device, the secondary charged particle beam comprising a first group of secondary charged particles starting from the specimen with high starting angles and a second group of secondary charged particles starting from the specimen with low starting angles; wherein at least one of the charged particle detectors is adapted to detect depending on the starting angles one group of the first and the second groups of secondary charged particles.
摘要:
A method of operating a focused ion beam device having a gas field ion source is described. According to some embodiments, the method includes emitting an ion beam from a gas field ion source, providing an ion beam column ion beam energy in the ion beam column which is higher than the final beam energy, decelerating the ion beam for providing a final beam energy on impingement of the ion beam on the specimen of 1 keV to 4 keV, and imaging the specimen.