摘要
The laser-induced plasma wakefield in a capillary is investigated on the basis of a simple two-dimensional analytical model. It is shown that as an intense laser pulse reshaped by the capillary wall propagates in capillary plasma, it resonantly excites a strong wakefield if a suitable laser pulse width and capillary radius are chosen for a certain plasma density. The dependence of the laser width and capillary radius on the plasma density for resonance conditions is considered. The wakefield amplitude and longitudinal scale of bubbles in capillary plasma are much larger than those in unbounded plasma, so the capillary guided plasma wakefield is more favorable to electron acceleration.
The laser-induced plasma wakefield in a capillary is investigated on the basis of a simple two-dimensional analytical model. It is shown that as an intense laser pulse reshaped by the capillary wall propagates in capillary plasma, it resonantly excites a strong wakefield if a suitable laser pulse width and capillary radius are chosen for a certain plasma density. The dependence of the laser width and capillary radius on the plasma density for resonance conditions is considered. The wakefield amplitude and longitudinal scale of bubbles in capillary plasma are much larger than those in unbounded plasma, so the capillary guided plasma wakefield is more favorable to electron acceleration.
作者
ZHOU Suyun
YUAN Xiao
LIU Mingping
周素云;袁孝;刘明萍(Modern Institute of Optical Technologies,Soochow University,Suzhou 215006,China;Jiangxi Optoelectronic and Communication Key Laboratories,Jiangxi Science and Technology Normal University,Nanchang 330013,China;College of Information Engineering,Nanchang University,Nanchang 330031,China)
基金
supported by National Natural Science Foundation of China (No.11047152)
the Natural Science Foundation of Jiangxi Province of China (No.2010GQW0048)
