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Study on wave packet dynamics of E1 ∑g＋ state of Li2 with femtosecond-resolved photoelectron spectra
  • ISSN号：1674-1056
  • 期刊名称：《中国物理B：英文版》
  • 时间：0
  • 分类：O433.59[机械工程—光学工程;理学—光学;理学—物理] O434.14[机械工程—光学工程;理学—光学;理学—物理]
  • 作者机构：[1]河南师范大学物理与信息工程学院,新乡453007, [2]河南质量工程职业学院,平顶山467000
  • 相关基金：国家自然科学基金（60977063）;省高校杰出科研人才创新工程项目（084100510011）
作者： 刘玉芳[1], 刘瑞琼[1], 丁俊霞[1]
关键词： IBr分子, 光电子, 量子, IBr molecule, photoelectrons, quantum
中文摘要：

本文主要对IBr分子的飞秒含时光电子能谱进行了模拟计算．运用含时量子波包方法，对不同延迟时间的光电子能谱进行模拟计算与理论分析．应用波包和光诱导势理论，对光电子能谱共同的两峰系特征及多峰现象给予合理解释．光电子能谱的峰值随延迟时间的增加而递减现象，是由于波包在A3Ⅱ1势能面上因分子解离发散，使整个波包在势能曲线上的振荡递减造成的．研究表明：波包的传播是一个能量减弱的过程；跃迁过程中不同电离通道之间的竞争，也对能谱存在一定的影响．

英文摘要：

The simulation of time-resolved photoelectron spectra for IBr molecule is studied mainly. The time-dependent quantum wave packet method is employed to calculate and analyze the photoelectron spectra of different delay times. The common characteristic of bimodal system and the phenomenon of more peaks are interpreted in reason using the theory of wave-packet and light-induced potentials. The reason why the peak decreases monotonically as the increases of delay-time is that the wave packet on the potential energy surface of A3Ⅱ1 for dissociation make the oscillating of wave packet on the A3 Ⅱ1 curve to decrease. By analyzing the results further, we can conclude that the propagation of wave-packet is a decreasing process of energy. In addition, the competition between different ionization channels in the process of transition also have a certain impact on the energy spectrum.

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期刊信息
  • 《中国物理B：英文版》
  • 中国科技核心期刊
  • 主管单位:中国科学院
  • 主办单位:中国物理学会和中国科学院物理研究所
  • 主编：欧阳钟灿
  • 地址：北京 中关村 中国科学院物理研究所内
  • 邮编：100080
  • 邮箱：
  • 电话：010-82649026 82649519
  • 国际标准刊号：ISSN：1674-1056
  • 国内统一刊号：ISSN：11-5639/O4
  • 邮发代号:
  • 获奖情况:
  • 国内外数据库收录:
  • 被引量:406