The Role of Coulomb Fields in the Formation of Emittance in Photoguns

IF 1.1 4区物理与天体物理 Q4 PHYSICS, APPLIED

Technical Physics Pub Date : 2024-09-26 DOI:10.1134/S1063784224060148

V. Ya. Ivanov, A. E. Levichev

引用次数: 0

Abstract

A theoretical analysis is made of the formation of longitudinal and transverse emittance of beams of charged particles in photoguns under the influence of repulsive forces of Coulomb fields. In numerical calculations, the characteristics of bunches of charged particles with uniform and Gaussian charge density distributions are compared. The efficiency of the proposed numerical-analytical model is compared with calculations using the Astra program. The obtained numerical and analytical results can be useful in the design of photoinjectors to select the optimal parameters that determine the main characteristics of photoguns.

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库仑场在光枪发射率形成中的作用

在库仑场斥力的影响下，对光枪中带电粒子束的纵向和横向幅射的形成进行了理论分析。在数值计算中，比较了电荷密度分布均匀的带电粒子束和高斯分布的带电粒子束的特性。提出的数值分析模型的效率与 Astra 程序的计算结果进行了比较。所获得的数值和分析结果可用于光电喷射器的设计，以选择决定光电枪主要特性的最佳参数。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Technical Physics 物理-物理：应用

CiteScore

1.30

自引率

14.30%

发文量

139

审稿时长

3-6 weeks

期刊介绍： Technical Physics is a journal that contains practical information on all aspects of applied physics, especially instrumentation and measurement techniques. Particular emphasis is put on plasma physics and related fields such as studies of charged particles in electromagnetic fields, synchrotron radiation, electron and ion beams, gas lasers and discharges. Other journal topics are the properties of condensed matter, including semiconductors, superconductors, gases, liquids, and different materials.