Ion jet generation in the ultraintense laser interactions with rear-side concave target

被引：4
|
作者：
Liu, Bin [2 ,3 ]
Zhang, Hua [1 ,2 ]
Fu, Li-Bin [1 ,2 ]
Gu, Yu-Qiu [4 ]
Zhang, Bao-Han [4 ]
Liu, Ming-Ping [5 ]
Xie, Bai-Song [6 ]
Liu, Jie [1 ,2 ]
He, Xan-Tu [1 ,2 ]
机构：
[1] Inst Appl Phys & Computat Math, Beijing 100088, Peoples R China
[2] Peking Univ, Ctr Appl Phys & Technol, Beijing 100871, Peoples R China
[3] China Acad Engn Phys, Grad Sch, Beijing, Peoples R China
[4] China Acad Engn Phys, Fus Res Ctr, Mianyang, Sichuan Prov, Peoples R China
[5] Nanchang Univ, Sch Informat Engn, Nanchang, Peoples R China
[6] Beijing Normal Univ, Coll Nucl Sci & Technol, Beijing 100875, Peoples R China
来源：
LASER AND PARTICLE BEAMS | 2010年 / 28卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Ion acceleration; Ion jet; Target-normal sheath acceleration; Ultrashort ultraintense laser; SHORT-PULSE LASER; SOLID INTERACTIONS; ELECTRON-BEAM; PONDEROMOTIVE-FORCE; PLASMA ACCELERATOR; MATTER INTERACTION; PROTON-BEAMS; FUSION; INSTABILITY; INTENSITY;
D O I：
10.1017/S0263034610000303
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
In this paper, the ion jet generation from the interaction of an ultraintense laser pulse and a rear-side concave target is investigated analytically using a simple fluid model. We find that the ion expanding surface at the rear-side is distorted clue to a strong charge-separation field, and that this distortion becomes dramatic with a singular cusp shown on the central axis at a critical time. The variation of the transverse ion velocity and the relative ion density diverge on the cusp, signaling the emergence of an on-axis ion jet. We have obtained analytical expressions for the critical time and the maximum velocity of the ion jet, and suggested an optimum shape for generating a collimated energetic ion jet. The above theoretical analysis has been verified by particle-in-cell (PIC) numerical simulations.
引用
收藏
页码：351 / 359
页数：9
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