啁啾脉冲对氢分子离子解离动力学的影响 |
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引用本文: | 徐文霞,苗向阳. 啁啾脉冲对氢分子离子解离动力学的影响[J]. 原子与分子物理学报, 2013, 30(6): 774-778 |
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作者姓名: | 徐文霞 苗向阳 |
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作者单位: | 山西师范大学物理与信息工程学院,山西师范大学物理与信息工程学院 |
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基金项目: | 教育部重大项目基金,省青年人才基金,国家自然科学基金,高等学校博士学科点专项科研基金 |
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摘 要: | 本文通过数值求解一维含时薛定谔方程,理论研究了超短啁啾脉冲(5-fs,790-nm)对处于低振动态氢分子离子解离动力学的影响. 研究过程中有效利用流算符的方法得到不同激光强度下的解离几率及核波包密度分布. 结果表明:低强度的啁啾脉冲可显著增强低振动态氢分子离子的解离过程,使解离过程提前发生并在较短的时间内获得较多的解离产物, 并给出相应的理论解释.
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关 键 词: | 解离; 流算符;啁啾脉冲 |
Effects of the chirped laser pulse on dissociation dynamics for H2+ |
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Abstract: | It is the influence of chirped laser pulse (5-fs, 790-nm) on dissociation dynamics for one-dimensional H2+ at low vibrational level with different intensities that has been discussed by numerically solving the one-dimensional (1D) time-dependent Schrödinger equation (TDSE). Both dissociation probabilities and the time evolution of nuclear probability densities are calculated by adopting the flux operator. And the results indicate that the dissociation process can be enhanced obviously at low intensity, and the dissociation process sets on at early time with more dissociation products, moreover, the theoretical explanations are provided in this paper. |
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Keywords: | Dissociation Flux operator Chirped laser pulse |
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