Particle-in-cell simulations of quasi-phase matched direct laser electron acceleration in density-modulated plasma waveguides

NCU Institutional Repository > 理學院 > 物理學系 > 期刊論文 > Item 987654321/105563

請使用永久網址來引用或連結此文件: https://ir.lib.ncu.edu.tw/handle/987654321/105563

題名:	Particle-in-cell simulations of quasi-phase matched direct laser electron acceleration in density-modulated plasma waveguides
作者:	陳仕宏;Lin, M.-W.;Liu, Y.-L.;Chen, S.-H.;Jovanovic, I.
貢獻者:	理學院物理學系
關鍵詞:	Collimation;Computer simulation;Defocusing;Density;Electron acceleration;Emittance;Lasers;Lorentz force;Particle in cell technique;Phase matching;Plasma;Plasma physics;Pulse duration;Simulation;Waveguides
日期:	2014-09-01
上傳時間:	2026-04-23 12:37:03 (UTC+8)
出版者:	Melville: American Institute of Physics
摘要:	摘要： Quasi-phase matched direct laser acceleration (DLA) of electrons can be realized with guided, radially polarized laser pulses in density-modulated plasma waveguides. A particle-in-cell model has been developed to describe the interactions among the laser field, injected electrons, and the background plasma in the DLA process. Simulations have been conducted to study the scheme in which seed electron bunches with moderate energies are injected into a plasma waveguide and the DLA is performed by use of relatively low-power (0.5–2 TW) laser pulses. Selected bunch injection delays with respect to the laser pulse, bunch lengths, and bunch transverse sizes have been studied in a series of simulations of DLA in a plasma waveguide. The results show that the injection delay is important for controlling the final transverse properties of short electron bunches, but it also affects the final energy gain. With a long injected bunch length, the enhanced ion-focusing force helps to collimate the electrons and a relatively small final emittance can be obtained. DLA efficiency is reduced when a bunch with a greater transverse size is injected; in addition, micro-bunching is clearly observed due to the focusing and defocusing of electrons by the radially directed Lorentz force. DLA should be performed with a moderate laser power to maintain favorable bunch transverse properties, while the waveguide length can be extended to obtain a higher maximum energy gain, with the commensurate increase of laser pulse duration and energy. 出版者： Melville: American Institute of Physics 出版日期： 2014-09-01 出處： Physics of plasmas, 2014-09, Vol.21 (9) 資源來源： AIP Journals (American Institute of Physics) 版權： 2014 AIP Publishing LLC. 識別號： ISSN: 1070-664X 識別號： ISSN: 1527-2419 識別號： ISSN: 1089-7674 識別號： EISSN: 1089-7674 識別號： DOI: 10.1063/1.4896245
顯示於類別:	[物理學系] 期刊論文

文件中的檔案:

檔案	描述	大小	格式	瀏覽次數
index.html		0Kb	HTML	21	檢視/開啟

在NCUIR中所有的資料項目都受到原著作權保護.

社群 sharing

資料載入中.....