The chaotic property in the autoionization of Rydberg lithium atom

doi:10.1088/1674-1056/17/12/016

中国物理B ›› 2008, Vol. 17 ›› Issue (12): 4428-4433.doi: 10.1088/1674-1056/17/12/016

The chaotic property in the autoionization of Rydberg lithium atom

周慧, 李洪云, 高嵩, 张延惠, 贾正茂, 林圣路

College of Physics and Electronics, Shandong Normal University, Jinan 250014, China

收稿日期:2008-03-06 修回日期:2008-04-08 出版日期:2008-12-20 发布日期:2008-12-20
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos 10774093 and 10374061).

The chaotic property in the autoionization of Rydberg lithium atom

Zhou Hui (周慧), Li Hong-Yun (李洪云), Gao Song (高嵩), Zhang Yan-Hui (张延惠), Jia Zheng-Mao (贾正茂), Lin Sheng-Lu (林圣路)

College of Physics and Electronics, Shandong Normal University, Jinan 250014, China

Received:2008-03-06 Revised:2008-04-08 Online:2008-12-20 Published:2008-12-20
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos 10774093 and 10374061).

摘要/Abstract

摘要： This paper presents theoretical computations of the ionization rate of Rydberg lithium atom above the classical ionization threshold using semiclassical approximation. The yielded random pulse trains of the escape electrons are recorded as a function of emission time such that allow for relating themselves to the terms of the recurrence periods of the photoabsorption. This fact turns to illustrate that it is ionic core scattering processes which give rise to chaos in autoionization dynamics and are verified by comparison of our results with the hydrogen atom situation readily. In order to reveal the chaotic properties in detail, the sensitive dependence of the ionization rate upon the scaled energy is discussed for different scaled energies. This approach provides a simple explanation for the chaotic character in autoionization decay of Rydberg alkali-metal atoms.

Abstract: This paper presents theoretical computations of the ionization rate of Rydberg lithium atom above the classical ionization threshold using semiclassical approximation. The yielded random pulse trains of the escape electrons are recorded as a function of emission time such that allow for relating themselves to the terms of the recurrence periods of the photoabsorption. This fact turns to illustrate that it is ionic core scattering processes which give rise to chaos in autoionization dynamics and are verified by comparison of our results with the hydrogen atom situation readily. In order to reveal the chaotic properties in detail, the sensitive dependence of the ionization rate upon the scaled energy is discussed for different scaled energies. This approach provides a simple explanation for the chaotic character in autoionization decay of Rydberg alkali-metal atoms.

Key words: chaos, autoionization, semiclassical theory, core scattering

中图分类号: (Autoionization)

32.80.Zb

31.15.xg (Semiclassical methods)

周慧, 李洪云, 高嵩, 张延惠, 贾正茂, 林圣路. The chaotic property in the autoionization of Rydberg lithium atom[J]. 中国物理B, 2008, 17(12): 4428-4433.

Zhou Hui (周慧), Li Hong-Yun (李洪云), Gao Song (高嵩), Zhang Yan-Hui (张延惠), Jia Zheng-Mao (贾正茂), Lin Sheng-Lu (林圣路). The chaotic property in the autoionization of Rydberg lithium atom[J]. Chin. Phys. B, 2008, 17(12): 4428-4433.

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The chaotic property in the autoionization of Rydberg lithium atom

The chaotic property in the autoionization of Rydberg lithium atom

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