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Ionic vacuum pump incorporating an ion trap

阅读：449发布：2021-12-24

专利汇可以提供Ionic vacuum pump incorporating an ion trap专利检索，专利查询，专利分析的服务。并且An ionic vacuum pump, which is continuously operated to maintain a vacuum within an image tube, is located at the end of a cylindrical tubulation connected to the envelope of the tube. An ion trap comprises a cylindrical cathode sleeve in contact with the walls of the tubulation and a rod-shaped anode electrode, which is connected to the anode of the pump and extends from the pump into the envelope of the tube where it connects to one of the tube electrodes, which is in turn connected to a 2.5 kv. DC source. The radial electric field between the anode and cathode of the ion trap drives positive ions escaping from the pump toward the cathode of the trap where they are collected and thus prevented from entering the tube.，下面是Ionic vacuum pump incorporating an ion trap专利的具体信息内容。

权利要求

1. In a vacuum system comprising: a chamber to be evacuated; a tubulation in gas flow communication with said chamber through a wall thereof; an ionic vacuum pump in gas communication with said chamber through said tubulation, said pump having a pump cathode and a pump anode; the improvement comprising an ion trap comprising a trap cathode mounted within said tubulation between said pump and chamber, a trap anode mounted in spaced relation to said cathode electrode, said pump cathode being electrically connected to said trap cathode, said pump anode being electrically connected to said trap anode, and means to energize said cathodes and anodes to produce a potential difference therebetween, whereby ions produced within said ionic pump and moving through said tubulation are collected.

2. The apparatus according to claim 1, wherein said cathode electrode defines an aperture therethrough and wherein said anode electrode is supported within said aperture.

3. The apparatus according to claim 2 wherein said cathode comprises a conductive cylinder supported concentrically within said tubulation and wherein said anode comprises a conductive rod supported concentrically within said cathode.

4. The apparatus according to claim 2 wherein said cathode electrode comprises a conductive coating deposited on the wall of said tubulation.

5. The apparatus according to claim 2 wherein said tubUlation includes an axial portion thereof formed of a conductive material, said axial portion comprising said cathode electrode.

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Ionic vacuum pump incorporating an ion trap

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