Technique of symmetric type quasi-linear electron pulse duration modulation |
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Authors: | Yifan Kang Gaoqian Yun Zhentang Fu Xiaomei Lei Haifang Zhang |
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Institution: | 1. School of Science, Air Force Engineering University, Xi?an 710051, China;2. Department of Technology and Physics, Zhengzhou University of Light Industry, Zhengzhou 450002, China |
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Abstract: | A novel technique of symmetric type quasi-linear electron pulse duration modulation is proposed. The salient feature from the conventional photoelectron gun is the introduction of the alternating electric field resonator. The electric field that results is synchronously controlled to generate the desired quasi-linear differential energy modulation on the electron pulse passing through. The effect resulted directly is that the leading electrons undergo negative energy modulation and decelerate, while the rear ones positive energy modulation and accelerate, which eventually leads to electron-pulse-duration modulation. The technical details are demonstrated, together with an illustration example. |
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Keywords: | Temporal broadening Differential energy modulation Symmetric type Quasi-linear |
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