Abstract: An apparatus, comprising a first member, including two conductive paths, a conductive adhesive, a second member, including two conductive paths, each of the two conductive paths of the second member being connected to a corresponding one of the two conductive paths of the first member via the conductive adhesive, to form two electrical connections, and a peak-shaped dielectric dam, formed on the second member between the two electrical connections.

Abstract: Scanning, as of ion beams, in which two radially aligned devices, e.g. ion source and extraction electrode, are isolated from and accurately positioned with respect to one another, while the second device moves arcuately to produce a scanning effect. Advantageously, while one device, e.g. the ion source, is moved by a rotating shaft, the second device, e.g., the extraction electrode, moves on a curved track centered on the axis of the shaft. While the devices are disposed within respective parts of a vacuum chamber, a mechanical synchronizing mechanism, located outside of the chamber, moves the devices via seals. The specific mechanism shown comprises a driven lead screw, an insulating crank for driving a shaft on which an ion source is mounted, and an arcuate motion tracking device which transmits the motion of the insulating crank into the chamber for driving the extraction electrode upon a curved track.

Abstract: A method of controlling the temperature of an article comprised of predetermined material during treatment of the article in vacuum comprises providing a heat conductive substance having a solid, rigid state at the temperature of the treatment, having a molten state at a higher temperature below the minimum damage temperature of the article, and being chemically nonreactive, nonwetting and nonadhesive at the higher temperature with a first portion of the article. The first portion of the article to be treated is immersed in molten heat conductive substance, a second portion of the article to be treated remaining unimmersed, exposed for treatment, and the substance is caused to solidify about the immersed first portion.