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Ultrafast high-energy electronic probe system based on ultrafast wide-spectrum electron beam

A technology of high-energy electrons and electron beams, applied in the field of ultra-fast high-energy electron probe systems, can solve problems such as the difficulty of obtaining picosecond-level and ultra-fast high-energy electron probes at the same time, and achieve the effect of improving time resolution and wide application prospects

Inactive Publication Date: 2020-03-17
PEKING UNIV
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Problems solved by technology

[0003] The purpose of the present invention is to provide an ultrafast high-energy electron probe system based on an ultrafast broad-spectrum electron beam, to solve the problem that the existing electron probe system is difficult to simultaneously obtain picosecond-level and ultrafast high-energy electron probes

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  • Ultrafast high-energy electronic probe system based on ultrafast wide-spectrum electron beam
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  • Ultrafast high-energy electronic probe system based on ultrafast wide-spectrum electron beam

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Embodiment Construction

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0023] In the existing technology, it is difficult to obtain ultrafast high-energy electron probes at the picosecond level. The purpose of the present invention is to provide an ultrafast high-energy electron probe system based on ultrafast broad-spectrum electron beams in view of the deficiencies in the prior art. Broad-spectrum high-energy electron beams, after passing through the magnet array, realize the time separation of electron beams with different ene...

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Abstract

The invention relates to an ultrafast high-energy electronic probe system based on an ultrafast wide-spectrum electron beam. The system comprises a laser driving electron input system, a femtosecond laser time precise synchronization system, a combined magnet module, a sample and a separation magnet. According to the system, ultra-short and ultra-strong laser generated by the femtosecond laser isutilized to be coupled with the target body to generate a hundred-megabit electron volt ultrafast wide-spectrum electron beam, the ultrafast wide-spectrum electron beam passes through the combined magnet module to generate time chirp, and a picosecond-level ultrafast electron beam with time information is obtained through the femtosecond laser time precise time synchronization system and can be used for the ultrafast electron probe. The ultrafast wide-spectrum high-energy electron beam driven by the femtosecond laser is used as an electron source, the picosecond ultrafast high-energy electronic probe can be obtained, picosecond-level electron beam time resolution is realized, the time resolution of the electronic probe system is improved, the hundred-megabit electron volt high-energy electronic probe is obtained and the system has a wide application prospect in the aspect of ultrafast electronic detection.

Description

technical field [0001] The invention relates to the field of ultrafast electron probes, in particular to an ultrafast high-energy electron probe system based on ultrafast wide-spectrum electron beams. Background technique [0002] As a widely used non-destructive detection method, the electronic probe has the characteristics of fast, high resolution, and high precision. However, the use of electronic probes to diagnose ultrafast processes requires ultrafast electron beams with time information. At the same time, For the detection of certain processes, ultrafast electrons with high energy (typically 10-100 MeV) are also required as electron probes. It is difficult to obtain picosecond-level and ultra-fast high-energy electron probes at the same time with the existing electronic probe systems. Contents of the invention [0003] The purpose of the present invention is to provide an ultrafast high-energy electron probe system based on ultrafast broad-spectrum electron beams, ...

Claims

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Application Information

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IPC IPC(8): G01N23/2251
CPCG01N23/2251
Inventor 卢海洋谢承志肖朝凡徐智怡刘佳鑫卢寰港
Owner PEKING UNIV
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