Frequency-domain theory of nonsequential double ionization in intense laser fields based on nonperturbative QED
文献类型：期刊论文
| 作者 | Wang, BB ; Guo, YC ; Chen, J ; Yan, ZC ; Fu, PM |
| 刊名 | PHYSICAL REVIEW A
 |
| 出版日期 | 2012 |
| 卷号 | 85期号:2 |
| 关键词 | MULTIPHOTON IONIZATION MOMENTUM DISTRIBUTIONS THRESHOLD ELECTRON HELIUM SINGLE |
| ISSN号 | 1050-2947 |
| 通讯作者 | Wang, BB: Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Lab Opt Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | We study nonsequential double ionization (NSDI) processes of an atom by applying the frequency-domain theory based on the nonperturbative quantum electrodynamics. We obtain the transition formulas that describe the NSDI processes caused by the collision ionization (CI) and the collision-excitation ionization (CEI) mechanisms. By analyzing the NSDI results of each above-threshold ionization (ATI) channel, we investigate the contributions to the NSDI from the backward and forward collisions. In particular, for the CI process, the backward collision makes a major contribution to the NSDI probability, whereas for the CEI process, it depends on the characteristics of the laser-atom system: if the energy that the recolliding electron needs to excite a bound electron is much larger than the laser photon energy, such as for the case of helium in this work, the backward collision dominates the contribution; otherwise, the forward collision dominates the contribution. We also discuss the source of interference fringes in the NSDI momentum spectra due to the CI mechanism and find that the fringes can be predicted by using a simple cosine function. This work can be regarded as a development of the frequency-domain theory, which may shed light on the study of multiparticle dynamics in intense laser fields. |
| 收录类别 | SCI |
| 资助信息 | National Natural Science Foundation of China [60778009, 11074296, 11074026]; NSERC of Canada; National Basic Research Program of China [2011CB8081002]; Chinese Academy of Sciences [KJCX2.YW.W10] |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/38484]  |
| 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 | Wang, BB,Guo, YC,Chen, J,et al. Frequency-domain theory of nonsequential double ionization in intense laser fields based on nonperturbative QED[J]. PHYSICAL REVIEW A,2012,85(2). |
| APA | Wang, BB,Guo, YC,Chen, J,Yan, ZC,&Fu, PM.(2012).Frequency-domain theory of nonsequential double ionization in intense laser fields based on nonperturbative QED.PHYSICAL REVIEW A,85(2). |
| MLA | Wang, BB,et al."Frequency-domain theory of nonsequential double ionization in intense laser fields based on nonperturbative QED".PHYSICAL REVIEW A 85.2(2012). |
入库方式： OAI收割
来源：物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。