当前位置: X-MOL 学术Phys. Rev. A › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Near-threshold two-photon double ionization of Kr in the vacuum ultraviolet
Physical Review A ( IF 2.9 ) Pub Date : 2021-02-26 , DOI: 10.1103/physreva.103.022832
Lazaros Varvarezos , Stefan Düsterer , Maksim D. Kiselev , Rebecca Boll , Cedric Bomme , Alberto De Fanis , Benjamin Erk , Christopher Passow , Sergei M. Burkov , Gregor Hartmann , Markus Ilchen , Per Johnsson , Thomas J. Kelly , Bastian Manschwetus , Tommaso Mazza , Michael Meyer , Dimitrios Rompotis , Oleg Zatsarinny , Elena V. Gryzlova , Alexei N. Grum-Grzhimailo , John T. Costello

We report angle-resolved measurements on photoelectrons emitted upon near-threshold two-photon double ionization (TPDI) of Kr irradiated by free-electron laser (FEL) pulses. These photoelectron angular distributions (PADs) are compared with the results of semirelativistic R-matrix calculations. As reported by Augustin et al. [Phys. Rev. A 98, 033408 (2018)], it is found that the presence of autoionizing resonances within the bandwidth of the exciting FEL pulse strongly influences the PADs. In contrast to measurements on lower-Z targets such as Ne and Ar, the larger spin-orbit interaction, inherent in 4p-subshell hole states of Kr, permits us to resolve and study PADs associated with some of the fine-structure components of the Kr+ and Kr2+ ions.

中文翻译:

真空紫外中K的近阈双光子双电离

我们报告了由自由电子激光(FEL)脉冲辐照的Kr的近阈值双光子双电离(TPDI)上发射的光电子的角度分辨测量。将这些光电子角分布(PAD)与半相对论的结果进行比较[R-矩阵计算。据奥古斯丁等报道。[物理 修订版A 98,033408(2018)],发现励磁FEL脉冲的带宽内自电离共振的存在强烈地影响垫。与较低的测量结果相反ž 诸如Ne和Ar之类的目标,是自旋轨道固有的更大的自旋轨道相互作用 4pKr的亚壳孔状态,使我们能够解析和研究与Pb的某些精细结构成分相关的PAD。 r+r2个+ 离子。
更新日期:2021-02-26
down
wechat
bug