A. T. Bondy, J. C. del Valle, S. Saha, K. R. Hamilton, D. Bharti, A. Harth, K. Bartschat
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引用次数: 0
Abstract
Following up on a recent paper (Bharti et al. in Phys Rev A 109:023110, 2024), we compare the predictions from several R-matrix with time-dependence calculations for a modified three-sideband version of the “reconstruction of attosecond beating by interference of two-photon transitions” (RABBITT) configuration applied to helium. Except for the special case of the threshold sideband, which appears to be very sensitive to the details of coupling to the bound Rydberg states, increasing the number of coupled states in the close-coupling expansion used to describe the ejected-electron–residual-ion interaction hardly changes the results. Consequently, the remaining discrepancies between the experimental data and the theoretical predictions are likely due to uncertainties in the experimental parameters, particularly the detailed knowledge of the laser pulse.
摘要继最近的一篇论文（Bharti 等人，Phys Rev A 109:023110, 2024）之后，我们比较了几种 R 矩阵的预测结果，以及应用于氦的 "双光子跃迁干涉重建阿秒跳动"（RABBITT）配置的修正三边带版本的时间相关性计算结果。除了阈值边带的特殊情况外（阈值边带似乎对与束缚雷德贝格态耦合的细节非常敏感），在用于描述射出电子-残余离子相互作用的紧密耦合扩展中，增加耦合态的数量几乎不会改变结果。因此，实验数据与理论预测之间的其余差异很可能是由于实验参数的不确定性造成的，特别是对激光脉冲的详细了解。
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The European Physical Journal D (EPJ D) presents new and original research results in:
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