Time-resolved sequential double ionization of D 2 molecules in an intense few-cycle laser pulse
Time-resolved sequential double ionization of D 2 molecules in an intense few-cycle laser pulse
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DOI：
10.1103/physreva.70.023406
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发表时间：
2004-08
影响因子：
2.9
通讯作者：
X. Tong;C. Lin
中科院分区：
文献类型：
--
作者：
X. Tong;C. Lin
本文计算了D{sub 2}分子在几周强激光场中连续双电离产生的D{sup +}离子的动能谱。D{sub 2}分子首先在其平衡距离处电离，然后在更大的核间距处进一步电离D{sub 2}{sup +}。计算了在含时激光场作用下，原子核的波包随时间的演化，包括电离损失。计算的D{sup +}能谱与最近的实验进行了比较，并推导出两个电离事件之间的时间间隔为亚飞秒精度。
The kinetic energy spectra of D{sup +} ions resulting from the sequential double ionization of D{sub 2} molecules in an intense few-cycle laser field are calculated. The D{sub 2} molecule is first ionized at its equilibrium distance, followed by further ionization of D{sub 2}{sup +} at larger internuclear separations. The time evolution of the nuclear wave packet is calculated including loss from ionization by the time-dependent laser field. The calculated D{sup +} energy spectra are compared with the recent experiment, and the time duration between the two ionization events is deduced to subfemtosecond accuracy.