引用本文:
【打印本页】   【HTML】   【下载PDF全文】   View/Add Comment  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 1547次   下载 975 本文二维码信息
码上扫一扫!
分享到: 微信 更多
Delayed Ionization and Delayed Detachment in Molecules and Clusters
F. Lépine,B. Baguenard,B. Concina,M. A. Lebeault,C. Bordas *
Author NameAffiliationE-mail
F. Lépine Université de Lyon, F-69622, Lyon, France; Université Lyon 1, Villeurbanne; CNRS, UMR 5579, LASIM  
B. Baguenard Université de Lyon, F-69622, Lyon, France; Université Lyon 1, Villeurbanne; CNRS, UMR 5579, LASIM  
B. Concina Université de Lyon, F-69622, Lyon, France; Université Lyon 1, Villeurbanne; CNRS, UMR 5579, LASIM  
M. A. Lebeault Université de Lyon, F-69622, Lyon, France; Université Lyon 1, Villeurbanne; CNRS, UMR 5579, LASIM  
C. Bordas * Université de Lyon, F-69622, Lyon, France; Université Lyon 1, Villeurbanne; CNRS, UMR 5579, LASIM bordas@lasim.univ-lyon1.fr 
Abstract:
The evolution of a molecular system excited above its ionization threshold depends on a number of parameters that include the nature of the excited states and their couplings to the various continua. The general nature of the processes governing this evolution depends also essentially on the complexity of the molecule, more precisely on its size, density of states,and strength of the couplings among the various internal degrees of freedom. In this paper we address the question of the transition between autoionization that prevails in small molecules, and delayed ionization occurring in larger molecules or clusters. This transition is illustrated by autoionization of Na2 Rydberg states on one hand, delayed ionization in fullerene C60, and delayed detachment in small cluster anions on the other hand. All processes are studied in the case of nanosecond laser excitation, corresponding to a rather slow deposition of the internal energy.
Key words:  Autoionization, Autodetachment, Thermionic emission
FundProject:
Delayed Ionization and Delayed Detachment in Molecules and Clusters
F. Lépine,B. Baguenard,B. Concina,M. A. Lebeault,C. Bordas *
摘要:
被激发到电离阈值以上的分子体系的演化依赖于激发态的特征和与连续态的耦合等多种参数. 这些特性主要是与分子体系的复杂性,更准确地说与分子的大小,态密度,内自由度中的耦合强度有关.本文通过Na2的里德堡态的自电离,富勒烯C60的延迟电离,阴离子小团簇的延迟解离研究了在小分子中起主导作用的自电离和在大分子以及团簇中出现的延迟电离之间的转变过程. 由于这些体系中相对较慢的内能转移过程,这些研究是在纳秒激光的激发下进行.
关键词:  自电离,自解离,热电子发射
DOI:10.1088/1674-0068/22/02/162-170
分类号: