Self-injection of electrons in a laser-wakefield accelerator by using longitudinal density ripple

被引：6
|
作者：
Dahiya, Deepak [1 ]
Sajal, Vivek [2 ]
Sharma, A. K. [1 ]
机构：
[1] Indian Inst Technol, Ctr Energy Studies, New Delhi 110016, India
[2] Indian Inst Technol, Dept Phys, New Delhi 110016, India
来源：
APPLIED PHYSICS LETTERS | 2010年 / 96卷 / 02期
关键词：
plasma accelerators; plasma density; plasma waves; wakefield accelerators; PLASMA-WAVES; PULSES;
D O I：
10.1063/1.3291674
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
By introducing a longitudinal density ripple (periodic modulation in background plasma density), we demonstrate self-injection of electrons in a laser-wakefield accelerator. The wakefield driven plasma wave, in presence of density ripple excites two side band waves of same frequency but different wave numbers. One of these side bands, having smaller phase velocity compared to wakefield driven plasma wave, preaccelerates the background plasma electrons. Significant number of these preaccelerated electrons get trapped in the laser-wakefield and further accelerated to higher energies.
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页数：3
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