Isotope Effects on Two-Photon Population Transfer Processes of HF and DF

Isotope Effects on Two-Photon Population Transfer Processes of HF and DF
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同位素对 HF 和 DF 双光子布居转移过程的影响

DOI:
10.1063/1674-0068/29/cjcp1509186
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发表时间:
2016-07
影响因子:
1
通讯作者:
Niu, Ying-yu
Niu, Ying-yu
中科院分区:
化学4区
文献类型:
--
作者:
Wang, Bin-bin;Han, Yong-chang;Cong, Shu-lin;Niu, Ying-yu

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通过求解含时薛定谔方程,研究了XF(X=H,D)对双光子共振激发布居转移过程的同位素效应。将基态电子能级υ=0和2分别作为这两个分子体系的初始态和目标态。详细讨论了场峰值幅度和脉冲宽度对布居转移过程的影响。要获得较高的转移几率(大于80%),DF分子的脉冲宽度需要大于860fs,而HF分子的脉冲宽度只需大于460fs。此外,与HF分子相比,中能级υ=1和较高能级υ=3在DF分子的双光子共振过程中可能起到更重要的作用。
The isotope effects of XF (X=H, D) on the population transfer process via two-photon resonance excitation are investigated by solving the time-dependent Schrödinger equation. The vibrational levels υ=0 and 2 of the ground electronic state are taken to be the initial and target states, respectively, for the two molecular systems. The influences of the field peak amplitude and pulse duration on the population transfer process are discussed in detail. The pulse duration is required to be longer than 860 fs for the DF molecule to achieve a relatively high transfer probability (more than 80%), while the one for the HF molecule is just required to be longer than 460 fs. Moreover, the intermediate level υ=1 and the higher level υ=3 may play more important roles in the two-photon resonance process for the DF molecule, compared to the roles in the process for the HF molecule.
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