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Chin. Phys. B, 2008, Vol. 17(12): 4428-4433    DOI: 10.1088/1674-1056/17/12/016
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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
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.
Keywords:  chaos      autoionization      semiclassical theory      core scattering  
Received:  06 March 2008      Revised:  08 April 2008      Accepted manuscript online: 
PACS:  32.80.Zb (Autoionization)  
  31.15.xg (Semiclassical methods)  
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos 10774093 and 10374061).

Cite this article: 

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 2008 Chin. Phys. B 17 4428

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