| 摘要 |
The present invention discloses a high-power photomultiplier apparatus, comprising a incident light source (1), a photocathode (2), a primary electron emitter (3), a secondary electron emitter (4), a third electron emitter (5), a fourth electron-emitting electrode (6), a light current output device (7), a ground fault protection device (8), a primary current damping device (9), a secondary current damping device (10), a three times current damping device (11), a four times current damping device (12). wherein, the photocathode (2) contains the electron emitter, which can focus electronics produced by the outer optical electronic effects to enlarge current, the amplified current is output through the light current output device (7), and then the voltage balance is achieved by the ground fault protection device (8) to prevent point discharge; Through the primary current damping device (9), the secondary current damping device (10), the three times current damping device (11), the four times current damping device (12), current is attenuated repeatedly, which prevents the output current from becoming instability to result fatigue that is caused by continuous large output current, thereby preventing an increase in dark current caused by the sudden change of current . Wherein the light current output device (7) comprises a light beam filter membrane, which has a thickness of 2.98um, the material of the light beam filter membrane is sixteen partial chromic iodine europium nanocomposite filter membrane. Figure 1 |
