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arXiv physics/9903016physics.atom-ph
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电子与卤素负离子的双光子脱离

Two-photon detachment of electrons from halogen negative ions

G. F. Gribakin, V. K. Ivanov, A. V. Korol, M. Yu. Kuchiev

摘要:

用最低阶微扰理论计算了卤素负离子的绝对双光子脱离截面和光电子角分布。Dyson方程方法被用来获得外np基态波函数与适当的渐近行为exp(-k r),对应于正确的(实验)结合能E=k^2/2。后者对于获得多光子截面的正确绝对值至关重要(Gribakin和Kuchiev 1997 Phys.Rev.A55 3760)。与以前的计算和实验数据进行比较。

英文摘要:

Absolute two-photon detachment cross sections and photoelectron angular distribution are calculated for halogen negative ions within lowest-order perturbation theory. The Dyson equation method is used to obtain the outer np ground-state wave functions with proper asymptotic behavior exp (-k r), corresponding to correct (experimental) binding energies E=k^2/2. The latter is crucial for obtaining correct absolute values of the multiphoton cross sections (Gribakin and Kuchiev 1997 Phys. Rev.A55 3760). Comparisons with previous calculations and experimental data are performed.

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