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352 条记录 (耗时 0.013 秒)

    X-ray tube
    121.
    发明授权
    X-ray tube 失效
    X射线管

    公开(公告)号：US3719846A

    公开(公告)日：1973-03-06

    申请号：US3719846D

    申请日：1971-01-08

    申请人： PHILIPS CORP

    发明人： BERENDS W ,  JACOB H ,  EGGELSMANN H

    IPC分类号： H01J35/04 ,  H01J35/24 ,  H01J35/14

    CPC分类号： H01J35/24 ,  H01J35/04

    摘要： The invention relates to an X-ray tube in which the anode and the cathode are accommodated in two parallel adjacent envelopes which are interconnected by a tubular member through which the electron beam passes. At high voltage (300 kV and higher) the direction of the electron beam and the direction of the maximum of the X-rays are inclined at an obtuse angle to one another. Thus the electrons impinge on the target nearly at grazing incidence. Even at slight deviation of the relative positions of the anode and cathode envelopes from the prescribed positions the focal spot is greatly shifted. According to the invention the two envelopes are relatively movable, causing substantially a deformation of the coupling member only which is capable of deformation owing to the use of an appropriate construction and/or a suitable material.

    Electrode structure for controlling electron flow with high transmission efficiency
    122.
    发明授权
    Electrode structure for controlling electron flow with high transmission efficiency 失效
    用于控制高传输效率的电子流的电极结构

    公开(公告)号：US3665236A

    公开(公告)日：1972-05-23

    申请号：US3665236D

    申请日：1970-12-09

    申请人： ATOMIC ENERGY COMMISSION

    发明人： GAINES JERRY L ,  EBERT PAUL J ,  MANCEBO LLOYD ,  COOK FREDERICK D

    IPC分类号： H01J19/34 ,  H01J21/02 ,  H01J35/22 ,  H01J35/04

    CPC分类号： H01J35/22 ,  H01J19/34 ,  H01J21/02 ,  H01J2893/0004

    摘要： Electrode structure for controlling flow of electrons from a cathode to an anode, characterized by the absence of electrodes in the flow path whereby electron flow is substantially unimpeded by physical structure and proceeds with high transmission efficiency. The structure is such as to establish an electron accelerating field and associated flow path between cathode and anode which bulges outwardly about an interposed control electrode and is thus not physically intercepted by same. By virtue of the high efficiency of electron transmission, the electrode structure may be advantageously incorporated in an Xray tube to provide X-ray pulses of increased intensity. In addition, the transmission characteristic in conjunction with the capability of the bulging field to enable the use of relatively small control voltages to govern electron flow render the electrode structure particularly well suited to the attainment of a high amplification factor in a high power amplifier tube for voltage regulation or switching applications.