Electron microscope
    1.
    发明授权
    Electron microscope 失效
    电子显微镜

    公开(公告)号:US4121100A

    公开(公告)日:1978-10-17

    申请号:US788538

    申请日:1977-04-18

    IPC分类号: H01J37/26 H01J37/04 H01J37/28

    CPC分类号: H01J37/04

    摘要: An electron beam from an electron gun is made to focus on a first position by a focussing lens system. The focussed beam is then magnified and projected on a screen through a magnification lens system having an objective lens, an intermediate lens and a projection lens.The excitation is so variable that the electron beam may be focussed also on a second position behind the projection lens.A specimen is positioned at the first position for normal electron microscope analysis, while, for a scanning electron microscope analysis, another specimen is put at the second position.

    摘要翻译: 通过聚焦透镜系统使来自电子枪的电子束聚焦在第一位置上。 然后通过具有物镜,中间透镜和投影透镜的放大透镜系统将聚焦光束放大并投影在屏幕上。

    Electron microscope
    3.
    发明授权
    Electron microscope 失效
    电子显微镜

    公开(公告)号:US4189641A

    公开(公告)日:1980-02-19

    申请号:US829916

    申请日:1977-09-01

    IPC分类号: H01J37/22 H01J37/04 H01J37/26

    CPC分类号: H01J37/265

    摘要: An electron beam emitted from an electron beam source is applied to a sample and when it produces an magnified image of the sample on a fluorescent plate, the amount of the electron beam is detected. When the accumulation of the electron beam radiation reaches a predetermined value with lapse of the time, the beam density on the surface of the sample is so controlled as to be reduced to zero or below a certain preset level, whereby the sample is prevented from damage due to excessive exposure to the electron beam.

    摘要翻译: 从电子束源发射的电子束被施加到样品上,并且当其在荧光板上产生样品的放大图像时,检测电子束的量。 当电子束辐射的累积随着时间的推移达到预定值时,样品表面上的光束密度被控制为降低到零或低于某一预设水平,从而防止样品损坏 由于过度暴露于电子束。

    Apparatus for irradiating a specimen by an electron beam
    5.
    发明授权
    Apparatus for irradiating a specimen by an electron beam 失效
    用于通过电子束照射试样的装置

    公开(公告)号:US4139774A

    公开(公告)日:1979-02-13

    申请号:US872762

    申请日:1978-01-27

    申请人: Shinjiro Katagiri

    发明人: Shinjiro Katagiri

    CPC分类号: H01J37/18

    摘要: A specimen chamber is which a specimen to be irradiated by an electron beam is arranged is evacuated by an evacuation device. The evacuation device includes a nonvaporative bulk getter vacuum pump and an oil rotary pump. The oil rotary pump is used for evacuating the specimen chamber from the atmospheric pressure to 10.sup.-1 - 10.sup.-2 Torr, while the nonvaporative bulk getter vacuum pump is used for continuously evacuating the specimen chamber to 10.sup.-5 - 10.sup.-6 Torr. The steady vacuum of 10.sup.-5 - 10.sup.-6 Torr is maintained by only the nonvaporative bulk getter vacuum pump.

    摘要翻译: 将通过电子束照射的试样的试样室由排气装置抽真空。 排气装置包括非蒸发性大块吸气真空泵和油旋转泵。 油旋转泵用于将样品室从大气压力抽真空至10-1-10-2 Torr,而非蒸发式吸气真空泵用于将样品室连续抽空至10-5-10-6 Torr。 10-5-10-6乇的稳定真空度仅由非蒸发式吸气真空泵保持。