Abstract:
An implantation system includes an ion extraction plate having a set of apertures configured to extract ions from an ion source to form a plurality of beamlets. A magnetic analyzer is configured to provide a magnetic field to deflect ions in the beamlets in a first direction that is generally perpendicular to a principle axis of the beamlets. A mass analysis plate includes a set of apertures wherein first ion species having a first mass/charge ratio are transmitted through the mass analysis plate and second ion species having a second mass/charge ratio are blocked by the mass analysis plate. A workpiece holder is configured to move with, respect to the mass analysis plate in a second direction perpendicular to the first direction, wherein a pattern of ions transmitted through the mass analysis plate forms a continuous ion beam current along the first direction at the substrate.
Abstract:
An ion beam uniformity control system, wherein the uniformity control system comprising a differential pumping chamber (422, 216) that encloses an array of individually controlled gas jets (402, 506), wherein the gas pressure of the individually controlled gas jets are powered by a controller to change the fraction of charge exchanged ions, and wherein the charge exchange reactions between the gas and ions change the fraction of the ions with original charge state of a broad ion beam (110), wherein the charge exchanged portion of the broad ion beam is removed utilizing an deflector (114) that generates a magnetic field, a Faraday cup profiler for measuring the broad ion beam profile; and adjusting the individually controlled gas jets based upon feedback provided to the controller to obtain the desired broad ion beam.
Abstract:
A ribbon beam mass analyzer having a first and second solenoid coils and steel yoke arrangement. Each of the solenoid coils have a substantially "racetrack" configuration defining a space through which an ion ribbon beam travels. The solenoid coils are spaced apart along the direction of travel of the ribbon beam. Each of the solenoid coils generates a uniform magnetic field to accommodate mass resolution of wide ribbon beams to produce a desired image of ions generated from an ion source.
Abstract:
Ion microscope methods and systems are disclosed. In general, the systems and methods provide high ion beam stability. In a method an ion beam is formed using a gas field ion source having a tip operating at voltage that is at least 5% greater than a best imaging voltage for the gas. Other methods of forming an ion beam using a mixture of gases are also disclosed. I
Abstract:
A method and device for electron diffraction tomography of a crystal sample, which employs scanning of the electron beam over a plurality of discrete locations of the sample, in combination with a beam scanning protocol as the beam converges at every discrete location (42, 43) of the sample (38) to obtain a series of electron diffraction patterns, use of template matching to determine crystal orientations and thickness maps to obtain a common intensity scaling factor.
Abstract:
This disclosure describes an ion implanter having a collimator magnet that is configured to shape an ion beam. A first deceleration stage is configured to manipulate energy of the ion beam shaped by the collimator magnet. A neutral filter magnet is configured to filter neutral atoms from the ion beam passing through the first deceleration stage.
Abstract:
A multipurpose ion implanter beam line configuration constructed for enabling implantation of common monatomic dopant ion species and cluster ions, the beam line configuration having a mass analyzer magnet defining a pole gap of substantial width between ferromagnetic poles of the magnet and a mass selection aperture, the analyzer magnet sized to accept an ion beam from a slot-form ion source extraction aperture of at least about 80 mm height and at least about 7 mm width, and to produce dispersion at the mass selection aperture in a plane corresponding to the width of the beam, the mass selection aperture capable of being set to a mass- selection width sized to select a beam of the cluster ions of the same dopant species but incrementally differing molecular weights, the mass selection aperture also capable of being set to a substantially narrower mass-selection width and the analyzer magnet having a resolution at the mass selection aperture sufficient to enable selection of a beam of monatomic dopant ions of substantially a single atomic or molecular weight.
Abstract:
An electromagnet and related ion implanter system including active field containment are disclosed. The electromagnet provides a dipole magnetic field within a tall, large gap with minimum distortion and degradation of strength. In one embodiment, an electromagnet for modifying an ion beam includes: a ferromagnetic box structure including six sides; an opening in each of a first side and a second opposing side of the ferromagnetic box structure for passage of the ion beam therethrough; and a plurality of current-carrying wires having a path along an inner surface of the ferromagnetic box structure, the inner surface including the first side and the second opposing side and third side and a fourth opposing side, wherein the plurality of current-carrying wires are positioned to pass around each of the openings of the first and second opposing sides.