An electrical device can include a body having a shape and including one or more components, and first and second electrodes implemented at respective locations of the body and configured to provide first and second engagements with a mounting surface and to allow a settling motion when the electrical device is positioned on the mounting surface. The electrical device can further include a third electrode implemented at a respective location of the body and configured to allow a limited range of the settling motion such that at an end of the limited range of the settling motion, the third electrode provides a third engagement with the mounting surface.

An electrical device can include a body having a shape and including one or more components, and first and second electrodes implemented at respective locations of the body and configured to provide first and second engagements with a mounting surface and to allow a settling motion when the electrical device is positioned on the mounting surface. The electrical device can further include a third electrode implemented at a respective location of the body and configured to allow a limited range of the settling motion such that at an end of the limited range of the settling motion, the third electrode provides a third engagement with the mounting surface.

A repeller assembly mounts in an arc chamber of an ion implanter. The repeller assembly contains a repeller, a tubular insert, first and second insulators, a contact member, and a lock member. The repeller has a knob-shaped body placed on an inner side of the arc chamber opposite to a cathode assembly. A repeller shaft is arranged extending through an opening of a wall of the arc chamber to an outer side. The repeller shaft has a step narrowing down the repeller shaft. The tubular insert is mounted concentrically to the repeller shaft. The first insulator has a collar shape and is attached to the tubular insert so that an inner shoulder of the first insulator is pressed against an outer side of the wall of the arc chamber. The second insulator is cap-nut shaped and is attached to the first insulator with an outer flange thereof.

A repeller assembly mounts in an arc chamber of an ion implanter. The repeller assembly contains a repeller, a tubular insert, first and second insulators, a contact member, and a lock member. The repeller has a knob-shaped body placed on an inner side of the arc chamber opposite to a cathode assembly. A repeller shaft is arranged extending through an opening of a wall of the arc chamber to an outer side. The repeller shaft has a step narrowing down the repeller shaft. The tubular insert is mounted concentrically to the repeller shaft. The first insulator has a collar shape and is attached to the tubular insert so that an inner shoulder of the first insulator is pressed against an outer side of the wall of the arc chamber. The second insulator is cap-nut shaped and is attached to the first insulator with an outer flange thereof.

A substrate structure including a bottom organic layer, at least one inorganic layer, at least one organic layer and at least one protruding object is provided. The at least one protruding object is protruded from an upper surface of the bottom organic layer or the organic layer. A maximum height of the protruding object protruded from the upper surface of the bottom organic layer or the organic layer is H, and a thickness of the organic layer covering the protruding object is T, wherein T1.1H.

According to one embodiment, an X-ray tube includes an anode target, a cathode including a filament and a convergence electrode which includes a groove portion, and an envelope. The groove portion includes a pair of first bottom surfaces which are located in the same plane as the filament and between which the filament is interposed in a width direction of the groove portion, and a pair of second bottom surfaces between which the filament and the pair of first bottom surfaces are interposed in a length direction of the groove portion and which are located closer to an opening of the groove portion than the pair of first bottom surfaces.

An X-ray generator is provided using a transmission type target having a long life span, where it is possible to change the point for generating X-rays on the surface of the target while maintaining the vacuum chamber in a high vacuum state. A portion of a vacuum chamber 1 that includes a target 2 is linked to a main body portion 1a of the chamber through a linking member 5 as a movable chamber portion 1b. A fixed anode 12 is provided between the target 2 and the electrode 10 at the final stage from among a group of electrodes 8, 9 and 10 for electrostatically accelerating and converging electrons from an electron source 7 and is fixed to the main body portion 1a of the chamber in order to prevent the form of the electrical field from changing when the movable chamber portion 1b is shifted.

An X-ray generator is provided using a transmission type target having a long life span, where it is possible to change the point for generating X-rays on the surface of the target while maintaining the vacuum chamber in a high vacuum state. A portion of a vacuum chamber 1 that includes a target 2 is linked to a main body portion 1a of the chamber through a linking member 5 as a movable chamber portion 1b. A fixed anode 12 is provided between the target 2 and the electrode 10 at the final stage from among a group of electrodes 8, 9 and 10 for electrostatically accelerating and converging electrons from an electron source 7 and is fixed to the main body portion 1a of the chamber in order to prevent the form of the electrical field from changing when the movable chamber portion 1b is shifted.

The present invention relates to an electron gun cathode mount adapted at one end to secure a thermionic cathode and at the other end to be connected to an attachment member, wherein the electron gun cathode mount is structured so as to be capable of, when in use, reducing heat transfer from the thermionic cathode to the attachment member, and the material forming the electron gun cathode mount has a thermal conductivity of less than 10 Wm.sup.1K.sup.1 at the operating temperature of the thermionic cathode in a direction from the thermionic cathode to the attachment member. The present invention also relates to an electron gun assembly having the electron gun cathode mount installed therein.

The present invention relates to an electron gun cathode mount adapted at one end to secure a thermionic cathode and at the other end to be connected to an attachment member, wherein the electron gun cathode mount is structured so as to be capable of, when in use, reducing heat transfer from the thermionic cathode to the attachment member, and the material forming the electron gun cathode mount has a thermal conductivity of less than 10 Wm.sup.1K.sup.1 at the operating temperature of the thermionic cathode in a direction from the thermionic cathode to the attachment member. The present invention also relates to an electron gun assembly having the electron gun cathode mount installed therein.