Comparison study for multiple ionization of carbonyl sulfide by linearly and circularly polarized intense femtosecond laser fields using Coulomb explosion imaging

被引：11

作者：

Ma, Pan ^{[1
,2
]}

Wang, Chuncheng ^{[1
,2
]}

Luo, Sizuo ^{[1
,2
]}

Yu, Xitao ^{[1
,2
]}

Li, Xiaokai ^{[1
,2
]}

Wang, Zhenzhen ^{[1
,2
]}

Hu, Wenhui ^{[1
,2
]}

Yu, Jiaqi ^{[1
,2
]}

Yang, Yizhang ^{[1
,2
]}

Tian, Xu ^{[1
,2
]}

Cui, Zhonghua ^{[1
,2
]}

Ding, Dajun ^{[1
,2
]}

机构：

[1] Jilin Univ, Inst Atom & Mol Phys, Changchun 130012, Jilin, Peoples R China

[2] Jilin Univ, Jilin Prov Key Lab Appl Atom & Mol Spect, Changchun 130012, Jilin, Peoples R China

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 2018年 / 51卷 / 09期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

multiple ionization; Coulomb explosion; carbonyl sulfide; intense laser field; electron recollsion; ALIGNMENT; PULSES; RADIATION; MOLECULES; CO2;

D O I：

10.1088/1361-6455/aab5aa

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We studied the relative yields and dissociation dynamics for two- and three-body Coulomb explosion (CE) channels from highly charged carbonyl sulfide molecules in intense laser fields using the CE imaging technique. The electron recollision contributions are evaluated by comparing the relative yields for the multiple ionization process in linearly polarized and circularly polarized (LP and CP) laser fields. The nonsequential multiple ionization is only confirmed for the charge states of 2 to 4 because the energy for further ionization from the inner orbital is much larger than the maximum recollision energy, 3.2U(p). The novel deviations of kinetic energy releases distributions between LP and CP pulses are observed for the charge states higher than 4. It can be attributed to the stronger molecular bending in highly charged states before three-body CE with CP light, in which the bending wave packet is initialed by the triple or quartic ionization and spread along their potential curves. Compared to LP light, CP light ionizes a larger fraction of bending molecules in the polarization plane.

引用

页数：9

共 39 条

[1] Quantum interference in double ionization and fragmentation of C6H6 in intense laser fields -: art. no. 253003 [J].