Frustrated double ionization in two-electron triatomic molecules
Frustrated double ionization in two-electron triatomic molecules
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DOI：
10.1103/physreva.94.043408
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发表时间：
2016-04
影响因子：
2.9
通讯作者：
A. Chen;H. Price;A. Staudte;A. Emmanouilidou
中科院分区：
文献类型：
--
作者：
A. Chen;H. Price;A. Staudte;A. Emmanouilidou
采用半经典模型，研究了在强线偏振近红外（800 nm）激光场驱动下，两电子三原子分子${\mathrm{D}}_{3}{}^{+}$中的受抑双电离（FDI）.我们计算了原子核的动能释放，发现实验和我们的模型之间有很好的一致性。我们探讨了FDI的两种途径，并表明，随着场强的增加，越垒电离超过隧道电离的FDI的基本机制。此外，我们计算FDI的离子碎片的角分布，并确定一个功能，可以潜在地通过实验观察到的，是一个签名的FDI的两个途径之一。
Using a semiclassical model, we investigate frustrated double ionization (FDI) in ${\mathrm{D}}_{3}{}^{+}$, a two-electron triatomic molecule, when driven by an intense, linearly polarized, near-infrared (800 nm) laser field. We compute the kinetic energy release of the nuclei and find a good agreement between experiment and our model. We explore the two pathways of FDI and show that, with increasing field strength, over-the-barrier ionization overtakes tunnel ionization as the underlying mechanism of FDI. Moreover, we compute the angular distribution of the ion fragments for FDI and identify a feature that can potentially be observed experimentally and is a signature of only one of the two pathways of FDI.