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As the diagram on the right shows, the gallium (Ga+) primary ion beam hits the sample surface and sputters a small amount of material, which leaves the surface as either secondary ions (i+ or i−) or neutral atoms (n 0). The primary beam also produces secondary electrons (e −). As the primary beam rasters on the sample surface, the signal ...
The einzel lens principle in a simplified form was also used as a focusing mechanism in display and television cathode ray tubes, [3] [4] and has the advantage of providing a good sharply focused spot throughout the useful life of the tube's electron gun, with minimal or no readjustment needed (many monochrome TVs did not have or need focus controls), although in high-resolution monochrome ...
The acquisition of Interline Brands allows The Home Depot access to expand its business to the multi-family sector, hospitality, and industrial area. Craig Menear, CEO of The Home Depot, says that the purchase gives The Home Depot more opportunity to expand in the maintenance, repair, and operations sector that was previously not successful.
The United States Food and Drugs Administration is warning pet owners about a common medication given to pets to treat arthritis. The F.D.A. now says that the drug Librela may be associated with ...
In general, an X-ray's beam intensity is not uniform. When it focuses to a target, a conical shape appears (divergent beam). The intensity of the beam from the positive anode side is lower than the intensity from the negative cathode side because the photons created when the electrons strike the target have a longer way to travel through the rotating target on the anode side.
A U.S. judge overseeing an auction of shares in the parent of Venezuela-owned Citgo Petroleum on Monday agreed to reopen a data room to allow potential buyers to prepare new bids, a court document ...
One happy beagle is bundling up and spending a warm and cozy Christmas with his new family this holiday season. Meet Copper, an 8-year-old beagle who was recently adopted by PETA staffers ...
Kit-of-parts philosophy goes hand in hand with advanced manufacturing, automation, and computer and information technologies. Handling multiple identical components as instances of a master element is an efficient use of the computer in the planning stage, and use of standard components can take advantage of mass-production and mass ...
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