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公开(公告)号：US4126811A
公开(公告)日：1978-11-21
申请号：US806706
申请日：1977-06-30
IPC分类号： H01J37/065 , H01J37/07 , H01J29/46 , H01J29/48
CPC分类号： H01J37/07 , H01J37/065
摘要： An electron gun comprises a linear thermionic cathode having part of its emitting surface facing an accelerating anode, and the rest of the emitting surface separated by a gap from a cathode-adjacent focusing electrode. The cathode-adjacent focusing electrode is made of two portions spaced apart. On the opposite end surfaces of these portions, there is attached a pair of flat current-conducting springs whose other ends are connected to leads. The other end surfaces of these portions accommodate cathode holders and have a pair of flat springs attached thereto, the other ends of the pair of flat springs being connected to the insulator of the electron gun housing. The pairs of flat springs attached to different portions of the focusing electrode deflect towards each other. The proposed electron gun increases the stability of its electron-optical parameters.
摘要翻译： 电子枪包括线性热离子阴极，其一部分发射表面面向加速阳极，其余发射表面与阴极相邻的聚焦电极间隔开。 阴极相邻的聚焦电极由间隔开的两个部分制成。 在这些部分的相对端面上，安装有一对扁平的导电弹簧，其另一端连接到引线。 这些部分的另一端面容纳阴极保持器，并具有一对连接到其上的平板弹簧，该对弹簧的另一端连接到电子枪壳体的绝缘体。 连接到聚焦电极的不同部分的一对平板弹簧彼此偏向。 所提出的电子枪增加了其电子 - 光学参数的稳定性。
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公开(公告)号：US5686785A
公开(公告)日：1997-11-11
申请号：US503991
申请日：1995-07-19
IPC分类号： H01J37/065 , H01J37/067 , H01J29/46
CPC分类号： H01J37/067 , H01J37/065 , H01J2237/06308
摘要： An electron gun for producing a beam of electrons has an elongated, linear thermionic cathode and a focusing electrode. The opposite ends of the cathode are engaged by adjustable holders which enable the spatial separation between the cathode and focusing electrode to be easily varied. The focusing electrode is electrically isolated from the cathode whereby fine tuning of the electron beam may be accomplished by varying the potential difference between the focusing electrode and cathode.
摘要翻译： 用于产生电子束的电子枪具有细长的线性热离子阴极和聚焦电极。 阴极的相对端由可调节的保持器接合，这使得阴极和聚焦电极之间的空间分离容易变化。 聚焦电极与阴极电隔离，由此可以通过改变聚焦电极和阴极之间的电位差来实现电子束的微调。
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公开(公告)号：US4105890A
公开(公告)日：1978-08-08
申请号：US792981
申请日：1977-05-02
IPC分类号： H05B7/00 , H01J37/04 , H01J37/141 , H01J37/315 , B23K9/00
CPC分类号： H01J37/315 , H01J37/141
摘要： A device for electron-beam heating of materials comprises an electron gun and an electromagnetic electron beam control system with a rectangular magnetic circuit. The opposite rods of the magnetic circuit accommodate beam deflection windings as well as beam correction and spreading windings. An additional winding is also provided on each magnetic circuit rod. The magnetic fields created by the current flowing through said additional windings form a magnetic quadrupole lens. The device permits manipulating the electron beam so as to obtain a sufficiently long and narrow focal spot on the surface being heated, and also the beam deflection angles range from 0.degree. to 45.degree..
摘要翻译： 用于材料的电子束加热的装置包括电子枪和具有矩形磁路的电磁电子束控制系统。 磁路的相对杆适应波束偏转绕组以及光束校正和扩展绕组。 每个磁回路杆上还设有一个额外的绕组。 由流过所述附加绕组的电流产生的磁场形成磁四极透镜。 该装置允许操纵电子束，以便在被加热的表面上获得足够长且窄的焦斑，并且光束偏转角也在0°至45°之间。
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