Abstract:
The invention relates to electronic equipment, more specifically - to development of gas-discharge electron guns for processing applications and can be used in special electrometallurgy for equipping high-capacity electron beam melting facilities, designed for melting and casting of metals and alloys for various purposes, especially for conducting the process with electromagnetic stirring (EMS) of the melt both for alloy smelting and forming of ingots or cast billets. The advantage of the proposed gun lies in a guaranteed exclusion of the possible intrusion of the atoms of metal of the gun's structural elements into the processing chamber thanks to the double turn of the electron beam in the beam guide. This will ensure obtaining high-purity metals and/or alloys.
Abstract:
Low energy electron sterilizers and method of sterilization using low energy electrons are disclosed herein. An example method of sterilizing an instrument using low energy electrons can include generating one or more low energy electrons, maintaining the instrument in a vacuum and irradiating the instrument with the low energy electrons. The low energy electrons can have an energy less than or equal to 25 keV, and the vacuum can be sufficiently low to prevent the one or more electrons from producing a plasma.
Abstract:
A gas supply assembly is described for delivery of gas to a plasma flood gun. The gas supply assembly includes: a fluid supply package configured to deliver inert gas to a plasma flood gun for generating inert gas plasma including electrons for modulating surface charge of a substrate in ion implantation operation; and cleaning gas in the inert gas fluid supply package in mixture with the inert gas, or in a separate cleaning gas supply package configured to deliver cleaning gas to the plasma flood gun concurrently or sequentially with respect to delivery of inert gas to the plasma flood gun. A method of operating a plasma flood gun is also described, in which cleaning gas is introduced to the plasma flood gun, intermittently, continuously, or sequentially in relation to flow of inert gas to the plasma flood gun. The cleaning gas is effective to generate volatile reaction product gases from material deposits in the plasma flood gun, and to effect re-metallization of a plasma generation filament in the plasma flood gun.
Abstract:
A virtual cathode deposition apparatus utilises virtual plasma cathode for generation of high density electron beam to ablate a solid target. A high voltage electrical pulse ionizes gas to produce a plasma which temporarily appears in front of the target and serves as the virtual plasma cathode at the vicinity of target. This plasma then disappears allowing the ablated target material in a form of a plasma plume to propagate toward the substrate. Several virtual cathodes operating in parallel provide plumes that merge into a uniform plasma which when condensing on a nearby substrate leads to wide area deposition of a uniform thickness thin film.
Abstract:
Provided may include an electron beam generator, an image apparatus including the same, and an optical apparatus. The optical apparatus includes a first and second laser apparatuses providing a first and second laser beams on a substrate, and a first optical system provided between the first and second laser apparatuses and the substrate to focus the first and second laser beams. The first and second laser beams overlap with each other generating an interference beam, thereby decreasing a spot size of the interference beam to be smaller than a wavelength of each of the first and second laser beams at a focal point.
Abstract:
The present invention discloses a system and method for generating gas cluster ion beams (GCIB) having very low metallic contaminants. Gas cluster ion beam systems are plagued by high metallic contamination, thereby affecting their utility in many applications. This contamination is caused by the use of thermionic sources, which impart contaminants and are also susceptible to short lifecycles due to their elevated operating temperatures. While earlier modifications have focused on isolating the filament from the source gas cluster as much as possible, the present invention represents a significant advancement by eliminating the thermionic source completely. In the preferred embodiment, an inductively coupled plasma and ionization region replaces the thermionic source and ionizer of the prior art. Through the use of RF or microwave frequency electromagnetic waves, plasma can be created in the absence of a filament, thereby eliminating a major contributor of metallic contaminants.
Abstract:
One embodiment of the present invention is a method for characterizing an electron beam treatment apparatus that includes: (a) e-beam treating one or more of a predetermined type of wafer or substrate utilizing one or more sets of electron beam treatment parameters; (b) making post-electron beam treatment measurements of intensity of a probe beam reflected from the surface of the one or more wafers in which thermal and/or plasma waves have been induced; and (c) developing data from the post-electron beam treatment measurements that provide insight into performance of the electron beam treatment apparatus.
Abstract:
Provided may include an electron beam generator, an image apparatus including the same, and an optical apparatus. The optical apparatus includes a first and second laser apparatuses providing a first and second laser beams on a substrate, and a first optical system provided between the first and second laser apparatuses and the substrate to focus the first and second laser beams. The first and second laser beams overlap with each other generating an interference beam, thereby decreasing a spot size of the interference beam to be smaller than a wavelength of each of the first and second laser beams at a focal point.
Abstract:
A method for performing milling and imaging in a focused ion beam (FIB) system employing an inductively-coupled plasma ion source, wherein two sets of FIB system operating parameters are utilized: a first set representing optimized parameters for operating the FIB system in a milling mode, and a second set representing optimized parameters for operating in an imaging mode. These operating parameters may comprise the gas pressure in the ICP source, the RF power to the ICP source, the ion extraction voltage, and in some embodiments, various parameters within the FIB system ion column, including lens voltages and the beam-defining aperture diameter. An optimized milling process provides a maximum milling rate for bulk (low spatial resolution) rapid material removal from the surface of a substrate. An optimized imaging process provides minimized material removal and higher spatial resolutions for improved imaging of the substrate area being milled.