Coherent electron beam preparation method based on cold atoms

A cold atom and electron beam technology, applied in circuits, electrical components, phonon exciters, etc., can solve the problems of high energy dissipation, low coherence, high temperature of electron beam, etc., and achieve the effect of improving the quality and effect of electron beam.

Inactive Publication Date: 2021-01-01
SOUTHWEAT UNIV OF SCI & TECH +1
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Problems solved by technology

[0005] Therefore, the present invention provides a coherent electron beam preparation method based on cold atoms, which solves the unavoidable problems of electron beam high temperature, high energy dissipation, and low coherence in traditional electron beam preparation technology from the source of electron generation

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  • Coherent electron beam preparation method based on cold atoms

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Embodiment Construction

[0018] The implementation mode of the present invention is illustrated by specific specific examples below, and those who are familiar with this technology can easily understand other advantages and effects of the present invention from the contents disclosed in this description. Obviously, the described embodiments are a part of the present invention. , but not all examples. 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.

[0019] see figure 1 , providing a coherent electron beam preparation method based on cold atoms, the obtained temperature is on the order of millikelions and the number of atoms is greater than 10 8 cold atomic clusters, and prepare the outermost electronic states of the atoms in the cold atomic clusters to the ground state, and prepare the required coherent electron beams by controlling the int...

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Abstract

The invention discloses a coherent electron beam preparation method based on the cold atoms, and the method comprises the steps: obtaining a cold atom group with the temperature of million magnitude and the number of atoms greater than 108, preparing the outermost layer electron state of the atoms in the cold atom group to the ground state, and preparing the needed coherent electron beam in the following modes: controlling excitation photons and electrons to interact, exciting the electrons to the high-energy state, adopting low-noise electric field driving to lead out electrons, and obtaininglow-temperature electron beam output through an acceleration electromagnetic field. According to the invention, an electron preparation technology based on a cold atom host and a photon and electricfield precision control technology used in the electron preparation process are used, and compared with the traditional electron preparation technology carried out under the conditions of high voltage, high current, high field intensity and the like, the characteristics of the obtained electrons are greatly different. The problems of high temperature, high energy dissipation and low coherence of electron beams, which cannot be avoided in the traditional electron beam preparation technology, are solved from the source of electron generation, and the quality of electron beams can be comprehensively improved.

Description

technical field [0001] The invention relates to the technical field of e-book preparation, in particular to a method for preparing coherent electron beams based on cold atoms. Background technique [0002] Cold atoms keep atoms in a state of extremely low temperature. Due to their slow movement speed and stable energy level structure, cold atoms have a more definite quantum state than hot atoms. It is more conducive to controlling its quantum state, such as outer electron spin, atomic magnetic moment and so on. [0003] High-brightness, high-coherence, ultra-short time-domain electron beam preparation is the basis of high-temporal-spatial resolution electron diffraction technology and high-coherence X-ray free electron laser technology. Fields such as nuclear science and technology are indispensable. [0004] Common electron beam preparation technologies include high-voltage electron guns, photocathode emission sources, and cutting-edge emission sources. These technologies...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S4/00
CPCH01S4/00
Inventor 周庆红徐艳霞李晓红刘涛
Owner SOUTHWEAT UNIV OF SCI & TECH
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