Abstract:
A multi-element electrostatic chicane energy filter, with the addition of electrostatic quadrupole and hexapole excitations to the dipole elements. A charged particle energy filter according to the present invention with a combination of dipole, quadrupole, and hexapole elements capable of producing a line focus at an aperture reduces space-charge effects and aperture damage. A preferred embodiment allows the filter to act as a conjugate blanking system. The energy filter is capable of narrowing the energy spread to result in a smaller beam.
Abstract:
The systems and methods described herein relate to the use of electrostatic elements or combinations of electrostatic and magnetic elements to confine charged particles in stable recirculating, trapped orbits. More particularly, the invention relates to systems and methods for acceleration and focusing of multiple charged particle beams having multiple energies and arbitrary polarities along a common axis.
Abstract:
Provided is an electrostatic lens for charged particle radiation with a lens performance relatively comparable to that of a magnetic type lens. A plurality of electrodes arranged on the incident side of charged particles form a first electric field area, wherein orbit radii of the charged particles are reduced without exceeding, on the way, the initial orbit radii that are orbit radii at the incident time, and a second electric field area, wherein force in the direction advancing in parallel with a central axis is applied to the charged particles that have passed through the first electric field area. A plurality of electrodes arranged on the projection side form a third electric field area, wherein the orbit radii of the charged particles do not exceed the initial orbit radii on the way and are curved to intersect with a central axis at angles larger than orbit angles defined with respect to the central axis of when the charged particles are projected from the second electric field area.
Abstract:
An electrostatic charged particle beam lens in a charged particle beam exposure apparatus includes a first electrode having at least one aperture; a second electrode having at least one aperture; and a supporting body disposed between the first electrode and the second electrode, the supporting body being configured to support the first electrode and the second electrode such that the first electrode and the second electrode are electrically separated from each other. The supporting body is made of alkali-free glass or low-alkali glass.
Abstract:
Devices and systems for reflecting ions are provided. In general, the devices and systems include a plurality of curved lens plates adapted for connection to at least one voltage source and having a passage therein to allow the ions to pass therethrough. The plurality of curved lens plates generates electric fields having elliptic equipotential surfaces that reflect and focus the ions as they pass through the passage. Reflectron time-of-flight (RE-TOF) spectrometers are also provided that include an ion source, ion detector, and such a reflectron as described above. Mass spectrometer systems are provided that comprise an ion source that generates ions and a reflectron TOF spectrometer such as described above.
Abstract:
The systems and methods described herein relate to the use of electrostatic elements or combinations of electrostatic and magnetic elements to confine charged particles in stable recirculating, trapped orbits. More particularly, the invention relates to systems and methods for acceleration and focusing of multiple charged particle beams having multiple energies and arbitrary polarities along a common axis.
Abstract:
The invention relates to a charged particle multi-beamlet lithographic system for exposing a target using a plurality of beamlets. The system comprises a beamlet generator for generating a plurality of beamlets, a beamlet blanker for controllably blanking beamlets, and an array of projection lens systems for projecting unblanked beamlets on to the surface of the target. The beamlet generator comprises at least one charged particle source for generating a charged particle beam, a sub-beam generator for defining a plurality of sub-beams from the charged particle beam, a sub-beam manipulator array for influencing the sub-beams, and an aperture array for defining beamlets from the sub-beams.
Abstract:
A correction device for a charged particle beam device for decreasing, correcting or inverting (that is adjusting) the spherical aberration of a charged particle beam is described. The correction principle is similar to that of common multipole-Correctors. But unlike common devices of that kind this new correction device gets along entirely with plane apertures having specially shaped holes in order to supply the multipoles required for correction and is therefore predestined for miniaturization and the use in multi column devices.
Abstract:
The present invention relates to a multi-beamlet multi-column particle-optical system comprising a plurality of columns which are disposed in an array for simultaneously exposing a substrate, each column having an optical axis and comprising: a beamlet generating arrangement comprising at least one multi-aperture plate for generating a pattern of multiple beamlets of charged particles, and an electrostatic lens arrangement comprising at least one electrode element; the at least one electrode element having an aperture defined by an inner peripheral edge facing the optical axis, the aperture having a center and a predetermined shape in a plane orthogonal to the optical axis; wherein in at least one of the plurality of columns, the predetermined shape of the aperture is a non-circular shape with at least one of a protrusion and an indentation from an ideal circle about the center of the aperture.
Abstract:
A lens assembly having an electrostatic lens component for a charged particle beam system is provided. The assembly includes: a first electrode having a conically shaped portion, a second electrode having a conically shaped portion, and a first insulator having a conically shaped portion, wherein the first insulator comprises two extending portions towards each of its ends, and wherein the two extending portions are formed to generate a gap between the insulator and each of the adjacent electrodes.