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Investigation Of The Limiting Factor Of Dynamic-Range In Femtosecond Streak Tube

Some experiments investigating the limiting factors of the dynamic-range in a femtosecond streak tube have been carried out. In the experiment, the space charge effect at the crossover has been measured independently under the condition, where the number of photoelectrons getting at the crossover can be varied without changing that emitted from the photocathode. As a rusult, the space charge effect at the crossover is believed to be more serious than that in the photocathode and in the near field of the photocathode.