Three-body fragmentation of CO2 driven by intense laser pulses

被引：20

作者：

Wu, Chengyin ^{[1
,2
]}

Wu, Cong ^{[1
]}

Fan, Yameng ^{[1
]}

Xie, Xiguo ^{[1
]}

Wang, Peng ^{[1
]}

Deng, Yongkai ^{[1
]}

Liu, Yunquan ^{[1
,2
]}

Gong, Qihuang ^{[1
,2
]}

机构：

[1] Peking Univ, State Key Lab Mesoscop Phys, Dept Phys, Beijing 100871, Peoples R China

[2] Collaborat Innovat Ctr Quantum Matter, Beijing 100871, Peoples R China

来源：

JOURNAL OF CHEMICAL PHYSICS | 2015年 / 142卷 / 12期

基金：

中国国家自然科学基金;

关键词：

INDUCED COULOMB EXPLOSION; DISSOCIATIVE IONIZATION; CARBON-DIOXIDE; FIELDS; PHOTODISSOCIATION; SPECTROSCOPY; MOLECULES; IONS; CS2;

D O I：

10.1063/1.4916045

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Dissociative ionization dynamics were studied experimentally for CO2 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 CO2n+ (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 CO2n+ at the moment of fragmentation, which are close to that of neutral CO2 before laser irradiation. (c) 2015 AIP Publishing LLC.

引用

页数：6

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