| 飞秒激光场下NH3分子光电子能谱的理论研究 |
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| 引用本文： | 李荣,蔡爱敏,张文文,孟庆田.飞秒激光场下NH3分子光电子能谱的理论研究[J].山东师范大学学报(自然科学版),2007,22(1):56-58. |
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| 作者姓名： | 李荣 蔡爱敏 张文文 孟庆田 |
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| 作者单位： | 山东师范大学物理与电子科学学院,250014,济南 |
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| 摘 要： | 模拟了NH3分子在飞秒激光场下通过中间快速预解离态A～的共振增强多光子电离光电子能谱(REMPI-PES).应用两维的含时波包法实施动力学计算,计算过程中使用了离散变量表示(DVR)理论和劈裂算符-表象变换方法.结果表明,激光脉冲的强度、脉宽等对光电子能谱有着很大的影响,能谱中的两组峰簇是由强场对势能面作用所引起的.
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| 关 键 词： | 光电子能谱 含时波包理论 飞秒激光场 离散变量表示 |
| 修稿时间： | 2006-08-06 |
THEORETICAL STUDY OF THE PHOTOELECTRON SPECTRUM FOR NH3 MOLECULE IN FEMTOSECOND LASER FIELD |
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| Li Rong,Cai Aimin,Zhang Wenwen,Meng Qingtian.THEORETICAL STUDY OF THE PHOTOELECTRON SPECTRUM FOR NH3 MOLECULE IN FEMTOSECOND LASER FIELD[J].Journal of Shandong Normal University(Natural Science),2007,22(1):56-58. |
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| Authors: | Li Rong Cai Aimin Zhang Wenwen Meng Qingtian |
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| Institution: | College of Physics and Electronics, Shandong Normal University, 250014, Jinan, China |
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| Abstract: | We simulated the resonance enhanced multiphoton ionization photoelectron spectroscopy(REMPI-PES)involving the fast predissociative state of NH3 in femtosecond laser field,and performed dynamics calculation utilizing two dimensional time-dependent wave packet dynamics scheme with the discrete variable representation(DVR) and split operator-representation transformation approach as the tool to propagate wave packet.The intensity and width of the laser pulse have a great impact on the photoelectron spectrum.The two sections of the spectrum result from the intense field effect on the energy potential surface. |
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| Keywords: | photoelectron spectrum TD wave packet scheme femtosecond laser field DVR scheme |
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