Importance of one- and two-photon transitions in the strong-field dissociation of NO2+
Importance of one- and two-photon transitions in the strong-field dissociation of NO2+
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DOI：
10.1103/physreva.104.053112
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发表时间：
2021-11
影响因子：
2.9
通讯作者：
B. Jochim;M. Zohrabi;B. Gaire;T. Uhlíková;K. Carnes;E. Wells;B. Esry;I. Ben-Itzhak
中科院分区：
文献类型：
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作者：
B. Jochim;M. Zohrabi;B. Gaire;T. Uhlíková;K. Carnes;E. Wells;B. Esry;I. Ben-Itzhak
利用符合三维动量成像技术，研究了亚稳离子束在超快强激光作用下的解离过程。基于774 nm和二阶谐波387 nm脉冲测量的动能释放和角分布，我们表明，在峰值强度附近的脉冲中，驱动解离的主要过程是从基态到第一激发态的单光子和双光子跃迁。一阶微扰理论计算也证实了这些发现。
Employing a coincidence three-dimensional momentum imaging technique, we investigate the ultrafast, intense laser-induced dissociation of a metastableion beam into. Based on the kinetic energy release and angular distributions, measured using both 774-nm and second-order-harmonic 387-nm pulses, we show that the main processes driving dissociation in pulses of aboutpeak intensity are one- and two-photon transitions from theground state to thefirst-excited state. First-order perturbation theory calculations also corroborate these findings.