摘要:
An ion beam device is described. The ion beam device includes 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, and an achromatic deflection unit adapted to deflect ions of the ion beam having a predetermined mass by a deflecting angle. The achromatic deflection unit includes: 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. The device further includes 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 separator, and an objective lens having a second optical axis, wherein the second optical axis is inclined with regard to the first axis.
摘要:
The present invention relates to a charged particle beam device (1) for inspecting or structuring a specimen (3) comprising a charged particle beam source (5) to generate a charged particle beam (7), a focussing lens (9) to focus the charged particle beam (7) onto the specimen (3), and an aperture system (13) for defining an aperture (6) for the charged particle beam (7). The aperture system (13) includes a first member (20) to block a first portion (7a) of the charged particle beam (7) between the charged particle beam source (5) and the focussing lens (9), a second member (30) to block a second portion (7b) of the charged particle beam (7) between the charged particle beam source (5) and the focussing lens (9), first means (24) for moving the first member (20) to adjust the size of the blocked first portion (7a) of the charged particle beam (7), and second means (34) for moving the second member (30) independently from the first portion (7b). With such aperture system (13), it is possible to freely adjust the size of the aperture (6) and align it to the optical axis (8) during operation.
摘要:
A multi-beam scanning electron beam device (100) is described. The multi-bea scanning electron beam device having a column, includes a multi-beam emitter (110) for emitting a plurality of electron beams (12,13,14), at least one common electron beam optical element (130) having a common opening for at least two of the plurality of electron beams and being adapted for commonly influencing at least two of the plurality of electron beams, at least one individual electron beam optical element (140) for individually influencing the plurality of electron beams, a common objective lens assembly (150) for focusing the plurality of electrons beams having a common excitation for focusing at least two of the plurality of electron beams, and adapted for focusing the plurality of electron beams onto a specimen (20) for generation of a plurality of signal beams (121, 131,141), and a detection assembly (170) for individually detecting each signal beam on a corresponding detection element.
摘要:
A scanning charged particle beam device (100) is described. The scanning charged particle beam device includes a beam emitter (102) for emitting a primary electron beam, a first scan stage for scanning the beam over a specimen, an achromatic beam separator (130) adapted for separating a signal electron beam from the primary electron beam, and a detection unit (172,174,178) for detecting signal electrons.
摘要:
A multi-beam scanning electron beam device (100) is described. The multi-bea scanning electron beam device having a column, includes a multi-beam emitter (110) for emitting a plurality of electron beams (12,13,14), at least one common electron beam optical element (130) having a common opening for at least two of the plurality of electron beams and being adapted for commonly influencing at least two of the plurality of electron beams, at least one individual electron beam optical element (140) for individually influencing the plurality of electron beams, a common objective lens assembly (150) for focusing the plurality of electrons beams having a common excitation for focusing at least two of the plurality of electron beams, and adapted for focusing the plurality of electron beams onto a specimen (20) for generation of a plurality of signal beams (121, 131,141), and a detection assembly (170) for individually detecting each signal beam on a corresponding detection element.
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.
摘要:
A charged particle beam apparatus is provided, which comprises a charged particle beam column for generating a primary charged particle beam; a focusing assembly, such as a charged particle lens, e.g., an electrostatic lens, for focusing the primary charged particle beam on a specimen; a detector for detecting charged signal particles which are emerging from the specimen; and a deflector arrangement for deflecting the primary charged particle beam. The deflector arrangement is arranged downstream of the focusing assembly and is adapted for allowing the charged signal particles passing therethrough. The detector is laterally displaced with respect to the optical axis in a deflection direction defined by the post-focusing deflector arrangement.
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.