Nonsequential double ionization of helium in IR plus XUV two-color laser fields: Collision-ionization process
文献类型：期刊论文
| 作者 | Jin, Facheng1; Tian, Yuanye1,2; Chen, Jing3; Yang, Yujun2; Liu, Xiaojun4; Yan, Zong-Chao5; Wang, Bingbing1 |
| 刊名 | PHYSICAL REVIEW A
 |
| 出版日期 | 2016-04-21 |
| 卷号 | 93期号:4 |
| 英文摘要 | We investigate the nonsequential double ionization (NSDI) process of an atom in IR+XUV two-color intense laser fields, where the photon energy of the XUV laser is higher than the atomic ionization threshold. By using the frequency-domain theory, we consider the NSDI as a process caused by the collision-ionization mechanism and obtain the NSDI spectrum that presents a multiplateau structure. With the help of channel analysis, we find that the height of a plateau in the NSDI spectrum is determined by the number of XUV photons absorbed by the electrons. Furthermore, to explain the interference structure in the NSDI spectrum, we also compare the contributions of forward and backward collisions to the NSDI probability. We find that the forward collision dominates the contributions to the NSDI when two electrons are ejected along the same direction and both forward and backward collisions make a comparable contribution to NSDI when the two electrons are ejected along opposite directions. By applying the saddle-point approximation, we obtain an energy-circle formula, which may illustrate the formation of the NSDI spectrum structure. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Optics ; Physics, Atomic, Molecular & Chemical |
| 研究领域[WOS] | Optics ; Physics |
| 关键词[WOS] | MULTIPHOTON IONIZATION ; HARMONIC-GENERATION ; ELECTRON |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000374524100005 |
| 源URL | [http://ir.wipm.ac.cn/handle/112942/9345]  |
| 专题 | 武汉物理与数学研究所_原子分子光物理研究部 |
| 作者单位 | 1.Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Lab Opt Phys, Beijing 100190, Peoples R China 2.Jilin Univ, Inst Atom & Mol Phys, Changchun 130012, Peoples R China 3.Inst Appl Phys & Computat Math, POB 8009, Beijing 100088, Peoples R China 4.Chinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Peoples R China 5.Univ New Brunswick, Dept Phys, Fredericton, NB E3B 5A3, Canada |
| 推荐引用方式 GB/T 7714 | Jin, Facheng,Tian, Yuanye,Chen, Jing,et al. Nonsequential double ionization of helium in IR plus XUV two-color laser fields: Collision-ionization process[J]. PHYSICAL REVIEW A,2016,93(4). |
| APA | Jin, Facheng.,Tian, Yuanye.,Chen, Jing.,Yang, Yujun.,Liu, Xiaojun.,...&Wang, Bingbing.(2016).Nonsequential double ionization of helium in IR plus XUV two-color laser fields: Collision-ionization process.PHYSICAL REVIEW A,93(4). |
| MLA | Jin, Facheng,et al."Nonsequential double ionization of helium in IR plus XUV two-color laser fields: Collision-ionization process".PHYSICAL REVIEW A 93.4(2016). |
入库方式： OAI收割
来源：武汉物理与数学研究所
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