Multichromatic narrow-energy-spread electron bunches from laser-wakefield acceleration with dual-color lasers

Physical Review Letters
M ZengJ Zhang

Abstract

A method based on laser wakefield acceleration with controlled ionization injection triggered by another frequency-tripled laser is proposed, which can produce electron bunches with low energy spread. As two color pulses copropagate in the background plasma, the peak amplitude of the combined laser field is modulated in time and space during the laser propagation due to the plasma dispersion. Ionization injection occurs when the peak amplitude exceeds a certain threshold. The threshold is exceeded for limited duration periodically at different propagation distances, leading to multiple ionization injections and separated electron bunches. The method is demonstrated through multidimensional particle-in-cell simulations. Such electron bunches may be used to generate multichromatic x-ray sources for a variety of applications.

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Citations

Aug 8, 2018·Scientific Reports·Vishwa Bandhu PathakChang Hee Nam
Nov 18, 2018·Scientific Reports·Myung Hoon ChoChang Hee Nam
Jan 15, 2016·Light, Science & Applications·Min ChenJie Zhang
Jun 25, 2019·Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences·N Vafaei-NajafabadiV Yakimenko
Oct 30, 2015·Optics Letters·Eiji J TakahashiKatsumi Midorikawa

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