Two-dimensional hydrodynamic characteristics of X-ray lasers plasmas
文献类型：期刊论文
| 作者 | Cheng, T ; Li, YJ ; Meng, LM ; Zhang, J |
| 刊名 | EPL
 |
| 出版日期 | 2008 |
| 卷号 | 84期号:4 |
| 关键词 | TRANSIENT GAIN TITANIUM NM |
| ISSN号 | 0295-5075 |
| 通讯作者 | Cheng, T (reprint author), China Univ Min & Technol, Beijing 100083, Peoples R China. |
| 中文摘要 | With one- and two-dimensional particle-in-cell (PIC) codes, we simulate the generation of high power terahertz (THz) emission from the interaction of ultrashort intense lasers with tenuous plasma and gas targets. By driving high-amplitude electron plasma waves either with a laser wakefield or the beatwave of two laser pulses, powerful THz electromagnetic pulses can be produced by linear mode conversion in inhomogeneous plasma or by the transient current induced at the surfaces of a thin plasma layer of few plasma wavelengths. Even with incident lasers at moderate intensity such as 10(17)W/cm(2), the produced emission can be at the level of tens of MW in power and capable of affording field strengths of a few MV/cm, suitable for the studies of THz nonlinear physics. With field ionization included in the PIC codes, THz emission from laser interaction with tenuous gas targets is simulated. It is found that the transient transverse current formed during the ionization processes is responsible for the THz emission. With this mechanism, one may also obtain THz fields of MV/cm at lower laser intensity as compared with the schemes of plasma-wave excitation. |
| 收录类别 | SCI |
| 资助信息 | National Natural Science Foundation of China [10474137, 10874242]; National Basic Research Program of China (973 Program) [2007CB815105]; National High-Tech ICF program; Specialized Research Fund for the Doctoral Program of Higher Education of China [20070290008] |
| 语种 | 英语 |
| 公开日期 | 2013-09-23 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/46259]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Cheng, T,Li, YJ,Meng, LM,et al. Two-dimensional hydrodynamic characteristics of X-ray lasers plasmas[J]. EPL,2008,84(4). |
| APA | Cheng, T,Li, YJ,Meng, LM,&Zhang, J.(2008).Two-dimensional hydrodynamic characteristics of X-ray lasers plasmas.EPL,84(4). |
| MLA | Cheng, T,et al."Two-dimensional hydrodynamic characteristics of X-ray lasers plasmas".EPL 84.4(2008). |
入库方式： OAI收割
来源：物理研究所
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