计算物理 ›› 2006, Vol. 23 ›› Issue (4): 489-493.

• 研究论文 • 上一篇    下一篇

双原子分子在啁啾激光作用下的经典解离

匙玉华1,2, 刘学深1, 丁培柱1   

  1. 1. 吉林大学原子与分子物理研究所, 吉林 长春 130012;
    2. 中国石油大学物理科学与技术学院, 山东 东营 257061
  • 收稿日期:2005-03-15 修回日期:2005-06-20 出版日期:2006-07-25 发布日期:2006-07-25
  • 作者简介:匙玉华(1978-),女,硕士生,从事激光场中的分子解离方面的研究.
  • 基金资助:
    国家自然科学基金(10574057,10571074);高等学校博士学科点专项科研基金(20050183010)资助项目

Classical Dissociation of a Diatomic Molecule with Chirped Pulses

CHI Yu-hua1,2, LIU Xue-shen1, DING Pei-zhu1   

  1. 1. Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China;
    2. China University of Petroleum, College of Physics Science and Technology, Dongying 257061, China
  • Received:2005-03-15 Revised:2005-06-20 Online:2006-07-25 Published:2006-07-25

摘要: 采用辛算法及经典理论方法,计算了HF分子在啁啾激光作用下的经典解离,讨论了解离几率随激光强度的变化,以及在相同激光强度下,选取不同的振动态作为初始态时解离几率的变化.

关键词: 双原子分子系统, 经典轨迹方法, 辛算法

Abstract: A classical trajectory method is used to study a diatomic molecule(HF) interacting with chirped intense laser pulses.In the model,the motion of nuclei is described with classical Hamiltonian canonical equations.The Hamiltonian equation is solved numerically by a symplectic method,and the initial conditions are chosen by a single trajectory in the field-free case at random.The classical dissociation of HF by chirped pulses is evaluated.The dissociation probabilities with different laser intensities are discussed.Dissociation probabilities at different initial states are also investigated.The dissociation process is illustrated by classical phase trajectories and energy versus nuclei separation.

Key words: diatomic system, classical trajectory approach, symplectic algorithm

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