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    Vacuum measuring ionization apparatus control
    31.
    发明授权
    Vacuum measuring ionization apparatus control 失效
    真空测量电离装置控制

    公开(公告)号：US4093913A

    公开(公告)日：1978-06-06

    申请号：US670512

    申请日：1976-03-24

    Applicant: Charles D. O'Neal, III

    Inventor： Charles D. O'Neal, III

    IPC: H01J41/04 ,  G01N27/00

    CPC classification number: H01J41/04

    Abstract: A triode ionization gauge controller employing logarithmic amplifiers develops a signal proportional to the logarithm of the ratio of an ion current to the ionizing current. Gaseous thermal conductivity is employed to reduce emission current at high pressure, thereby prolonging the life of the cathode. Complete over-pressure protection is accomplished by comparing emission current with respect to a predetermined limiting current.

    Abstract translation: 使用对数放大器的三极管电离计控制器产生与离子电流与电离电流的比率的对数成比例的信号。 采用气体热导率来降低高压下的发射电流，从而延长阴极的使用寿命。 通过将发射电流相对于预定极限电流进行比较来实现完全的过压保护。

    Ionization pressure gauge tube
    32.
    发明授权
    Ionization pressure gauge tube 失效
    离子压力测量管

    公开(公告)号：US3760212A

    公开(公告)日：1973-09-18

    申请号：US3760212D

    申请日：1971-10-26

    Applicant: BALZERS PATENT BETEILIG AG

    Inventor： MENNEGA H

    IPC: H01J41/04 ,  G01T1/18 ,  G01N27/00

    CPC classification number: H01J41/04

    Abstract: An ionization pressure gauge tube is designed as a triode including an electron-emitting hot cathode, an electronaccelerating electrode and an ion collector arranged between the cathode and the accelerating electrode. The cathode, accelerating electrode and collector have dimensions and a relative arrangement such that the triode system has a transconductance of 0.25 to 1.00. The accelerating electrode is designed as a cylinder and the ion collector is designed as a system of 3 to 5 rods extending parallel to the axis of the tube and arranged symmetrically around the cathode. The cylindrical accelerating electrode has a diameter of from 8 to 16 mm.

    Abstract translation: 电离压力表管被设计为三极管，其包括布置在阴极和加速电极之间的电子发射热阴极，电子加速电极和离子收集器。 阴极，加速电极和集电器具有尺寸和相对布置，使得三极管系统的跨导为0.25至1.00。 加速电极设计为圆柱体，离子收集器设计为平行于管轴线延伸的3至5个棒的系统，并且围绕阴极对称地布置。 圆筒状加速电极的直径为8〜16mm。

    Electron beam apparatus with means for generating a rotation-symmetrical magnetic field
    33.
    发明授权
    Electron beam apparatus with means for generating a rotation-symmetrical magnetic field 失效
    电子束装置，用于产生旋转对称磁场

    公开(公告)号：US3731094A

    公开(公告)日：1973-05-01

    申请号：US17304571

    申请日：1971-08-19

    Applicant: PHILIPS CORP

    Inventor： LE POOLE J

    IPC: G01Q30/02 ,  H01J29/56 ,  H01J37/04 ,  H01J37/063 ,  H01J37/067 ,  H01J37/145 ,  H01J37/153 ,  H01J41/04 ,  H01J37/26

    CPC classification number: H01J37/04 ,  H01J29/56 ,  H01J37/063 ,  H01J37/067 ,  H01J37/145 ,  H01J37/153 ,  H01J41/04

    Abstract: An apparatus for generating an electrostatic space charge in a rotation-symmetrical magnetic field, in which an electron beam from an electron gun which is arranged laterally on the field space generates the space charge in the field space. The electron beam may be adjusted by mechanical adjustment of the gun and also by means of the potential of a conducting sleeve in the magnetic field. By means of this potential, it is also possible to adjust the ratio between the contributions to the space charge which are due to primary electrons and to secondary electrons produced by the primary electrons in a residual gas in the field space.

    Abstract translation: 一种用于在旋转对称磁场中产生静电空间电荷的装置，其中来自电子枪的电子束横向设置在场空间上，在场空间中产生空间电荷。 电子束可以通过枪的机械调节以及通过导磁套在磁场中的电位来调节。 通过这种电位，还可以调整由于一次电子引起的空间电荷的贡献与在场空间中残留气体中的一次电子产生的二次电子之间的比率。

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