Abstract:
The sputter ion pump includes a vacuum chamber that includes an inner wall having a cylindrical section which is rugged in cross section. The rugged cylindrical section has outer recesses each of which is provided with a permanent magnets, each magnet having a same shape and a same characteristic so that a magnetic pole is directed to a same direction. The rugged cylindrical section has also inner recesses each of which is provided with a cylindrical anode electrode member spaced from the vacuum chamber wall. The rugged cylindrical section of the vacuum chamber wall is formed as a cathode electrode. A cylindrical shield member having a peripheral portion provided with evacuating bores is provided coaxially to the permanent magnets and anode electrodes. The permanent magnets and anode electrode members are arranged with equal spacing in an axis symmetrical configuration.
Abstract:
A plasma pump and method for pumping ions from a first to second region, the pump including a partition member having a through opening defining a plurality of conduits (30); a group of magnets (24) to provide magnetic forces that extend to the conduits; and a plurality of electric potential sources (14) for creating electrostatic fields which accelerate ions from the conduits to the second region.
Abstract:
An ion pump anode eliminates the intercellular spaces while maintaining an efficient cell shape in which the plasma sheath follows the contour of the cell wall. The cell are preferably quasi-cylindrical and can be manufactured by folding one or more metal strip into a corrugation and welding the strip to create separate cells. By eliminating the intercellular region, which support a high plasma density, the formation of dendrites under such a region is prevented and instabilities caused by those dendrites are eliminated.
Abstract:
The present invention provides a use of an electro-sensitive movable fluid, that is, a micromotor, a linear motor, a micropump and a method of using the micropump, a microactuator, and an apparatus which these devices are applied to, and a method and an apparatus of controlling flow properties of a fluid.
Abstract:
An exhaust apparatus and a high vacuum pumping unit including such high vacuum device and an auxiliary vacuum pump are disclosed, wherein a high vacuum is achieved in a vacuum vessel such that the gas molecules within the vacuum vessel are ionized and accelerated to be exhausted and, further, in the high vacuum pumping unit, those gas molecules diffused back or desorbed from the vacuum pump are ionized and accelerated to be returned to the vacuum pump.
Abstract:
In a magnetic field immersion type electron gun for controlling an electron beam emitted by an electron gun (51) with the use of an electric lens (56) and a magnetic field lens formed by permanent magnets (57, 58) of a coaxial ion pump (53), the ion pump magnets are a pair of cylindrical permanent magnets (57, 58) disposed coaxially with an optical axis (52) of the electron gun (51) in such a way as to sandwich a cylindrical ion pump anode (61) of the coaxial ion pump; the two permanent magnets are magnetized in a mutually opposing direction; a hollow cylindrical yoke (60) is disposed also coaxially with the optical axis (52) in such a way as to enclose the two permanent magnets (57, 58) within a hollow portion thereof; and the yoke (60) is formed with an annular yoke gap (63) in a radially inner circumferential surface of the yoke (60) to leak out a magnetic flux flowing through the yoke toward the optical axis. In the above-mentioned construction, the magnetic field lens can be formed efficiently with the use of the magnetic field generated by the permanent magnets for constituting the coaxial ion pump, and further the formed magnetic field lens can be superimposed upon the electron gun. Therefore, an electric field immersion type electron gun of high performance can be obtained, and further the electron gun chamber can be efficiently evacuated in the vicinity of the cathode tip of the electron gun.
Abstract:
An exhaust apparatus and a high vacuum pumping unit including such high vacuum device and an auxiliary vacuum pump are disclosed, wherein a high vacuum is achieved in a vacuum vessel such that the gas molecules within the vacuum vessel are ionized and accelerated to be exhausted and, further, in the high vacuum pumping unit, those gas molecules diffused back or desorbed from the vacuum pump are ionized and accelerated to be returned to the vacuum pump.
Abstract:
An exhaust apparatus and a high vacuum pumping unit including a high vacuum device and an auxiliary vacuum pump are disclosed, wherein a high vacuum is achieved in a vacuum vessel such that the gas molecules within the vacuum vessel are ionized and accelerated to be exhausted. In the high vacuum pumping unit, those gas molecules are diffused back or released from the vacuum pump are ionized and accelerated to be returned to the vacuum pump.