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    • 6. 发明申请
    • MULTIFUNCTIONAL ULTRAFAST ELECTRON GUN OF TRANSMISSION ELECTRON MICROSCOPE
    • 传输电子显微镜的多功能超声电子枪
    • WO2015103829A1
    • 2015-07-16
    • PCT/CN2014/076846
    • 2014-05-06
    • INSTITUTE OF PHYSICS, CHINESE ACADEMY OF SCIENCES
    • LI, JianqiTIAN, HuanfangCAO, GaolongMA, ChaoYANG, Huaixin
    • H01J37/06
    • H01J37/06H01J37/073H01J37/26H01J37/28H01J37/3178H01J2237/2802
    • A multifunctional ultrafast electron gun of a transmission electron microscopy comprises: a laser source(lOO), an electron gun body(200) and a laser introducing module(300). The electron gun body(200) comprises: an electron gun sleeve comprising a first section sleeve(211) and a second sleeve(212); and, a cafhode(220),an acceleration electrode(230) and an anode(240) arranged in up-down order, wherein the cafhode(220) and the acceleration electrode(230) are located within the first section sleeve(211) and the anode(240) is located within the second section sleeve(212). The laser introducing module(300) includes an introducing module sleeve(310) sealedly connected between the first section sleeve(211) and the second section sleeve(212) and provided with a laser incoming window(320) in a side thereof; and a laser reflective mirror(330) located in the introducing module sleeve(310), which is configured to face right the laser incoming window(320) and configured adjacent to a central axis of the introducing module sleeve(310), and a reflective face of which configured to make an angle of 45°with the central axis of the introducing module sleeve(310). It can achieve good coherence performance of the electrons obtained in the case of the photoelectron emission.
    • 透射电子显微镜的多功能超快电子枪包括:激光源(100),电子枪体(200)和激光引入模块(300)。 电子枪主体(200)包括:电子枪套筒,包括第一部分套筒(211)和第二套筒(212); 以及上下方向排列的咖啡面(220),加速电极(230)和阳极(240),其中咖啡面(220)和加速电极(230)位于第一部分套筒(211)内, 并且阳极(240)位于第二部分套筒(212)内。 激光引入模块(300)包括密封地连接在第一部分套筒(211)和第二部分套筒(212)之间并在其一侧设置有激光进入窗口(320)的引入模块套筒(310) 以及位于所述引入模块套筒(310)中的激光反射镜(330),所述激光反射镜被配置为面对所述激光进入窗口(320)并且邻近所述引入模块套筒(310)的中心轴线配置,并且被配置为反射 其构造成与引入模块套筒(310)的中心轴成45°的角度。 可以实现在光电子发射的情况下获得的电子的良好的相干性能。