Asymmetric electron energy sharing in strong-field double ionization of helium
Asymmetric electron energy sharing in strong-field double ionization of helium
复制标题
氦强场双电离中的不对称电子能量共享
DOI：
10.1103/physreva.82.053402
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发表时间：
2010-07
影响因子：
2.9
通讯作者：
Lu, Peixiang
中科院分区：
文献类型：
--
作者：
Liao, Qing;Zhou, Yueming;Lu, Peixiang
采用经典的三维系综模型，研究了波长为800 nm，脉宽为2.0 PW/cm{sup 2}的激光脉冲作用下氦原子非顺序双电离的微观动力学.我们证明了在高激光强度下，两个电子之间的非对称能量共享在形成实验观察到的相关纵向电子动量谱中的V形结构中起着决定性作用[Phys. Rev. Lett. 99，263003（2007）]。这种不对称的能量共享的电子的横向动量谱上留下的足迹，这提供了洞察阿秒三体相互作用。
With the classical three-dimensional ensemble model, we have investigated the microscopic recollision dynamics in nonsequential double ionization of helium by 800-nm laser pulses at 2.0 PW/cm{sup 2}. We demonstrate that the asymmetric energy sharing between the two electrons at recollision plays a decisive role in forming the experimentally observed V-shaped structure in the correlated longitudinal electron momentum spectrum at the high laser intensity [Phys. Rev. Lett. 99, 263003 (2007)]. This asymmetric energy-sharing recollision leaves footprints on the transverse electron momentum spectra, which provide insight into the attosecond three-body interactions.