Three-body fragmentation of CO{sub 2} driven by intense laser pulses

Dissociative ionization dynamics were studied experimentally for CO{sub 2} driven by intense laser pulses. Three-dimensional momentum vectors of correlated atomic ions were obtained for each three-body fragmentation event using triple ion coincidence measurement. Newton diagram demonstrated that thr...

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Veröffentlicht in:The Journal of chemical physics 2015-03, Vol.142 (12)
Hauptverfasser: Wu, Chengyin, Liu, Yunquan, Gong, Qihuang, Collaborative Innovation Center of Quantum Matter, Beijing 100871, Wu, Cong, Fan, Yameng, Xie, Xiguo, Wang, Peng, Deng, Yongkai
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Sprache:eng
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Zusammenfassung:Dissociative ionization dynamics were studied experimentally for CO{sub 2} driven by intense laser pulses. Three-dimensional momentum vectors of correlated atomic ions were obtained for each three-body fragmentation event using triple ion coincidence measurement. Newton diagram demonstrated that three-body fragmentation of CO{sub 2}{sup n+} (n = 3-6) can occur through Coulomb explosion process and sequential fragmentation process depending on the fragmentation channels. The experimental data from these two processes were disentangled by using correlation diagram of correlated ions. Based on the accurate Coulomb explosion data, we reconstructed the bond angle distributions of CO{sub 2}{sup n+} at the moment of fragmentation, which are close to that of neutral CO{sub 2} before laser irradiation.
ISSN:0021-9606
1089-7690
DOI:10.1063/1.4916045