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Theoretical Investigation of the Competitive Mechanism Between Dissociation and Ionization of H-2(+) in Intense Field
Yao, Hongbin1,2; Zhao, Guangjiu1
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY A
2014-10-02
DOI10.1021/jp5030153
Volume118Issue:39Pages:9173-9181
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Physical ; Physics, Atomic, Molecular & Chemical
WOS Research AreaChemistry ; Physics
WOS KeywordABOVE-THRESHOLD-DISSOCIATION ; LASER FIELDS ; MULTIPHOTON IONIZATION ; ELECTRON LOCALIZATION ; DYNAMICS ; PULSES ; BOND
AbstractThe competitive mechanism between dissociation and ionization of hydrogen molecular ion in intense field has been theoretically investigated by using an accurate non-BornOppenheimer method. The relative yield of fragments indicates that the dissociation and ionization channels are competitive with the increasing laser intensity from 5.0 X 10(13) to 2.0 X 10(14) W/cm(2). In the case of intensity lower than 1.0X 10(14) W/cm(2), the dissociation channel is dominant, with a minor contribution from ionization. The mechanism of dissociation includes the contributions from the bond softening, bond hardening, below-threshold dissociation, and above-threshold dissociation, which are strongly dependent on the laser intensity and initial vibrational state. Furthermore, the ionization dominates over the dissociation channel at the highest intensity of 2.0 X 10(14) W/cm(2). The reasonable origin of ionization is ascribed as the above-threshold Coulomb explosion, which has been demonstrated by the space-time dependent ionization rate. Moreover, the competition mechanism between dissociation and ionization channels are displayed on the total kinetic energy resolved (KER) spectra, which could be tested at current experimental conditions.
Language英语
WOS IDWOS:000342651200033
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/145427
Collection中国科学院大连化学物理研究所
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China
2.Xinjiang Inst Engn, Dept Basic Courses, Urumqi 830091, Peoples R China
Recommended Citation
GB/T 7714
Yao, Hongbin,Zhao, Guangjiu. Theoretical Investigation of the Competitive Mechanism Between Dissociation and Ionization of H-2(+) in Intense Field[J]. JOURNAL OF PHYSICAL CHEMISTRY A,2014,118(39):9173-9181.
APA Yao, Hongbin,&Zhao, Guangjiu.(2014).Theoretical Investigation of the Competitive Mechanism Between Dissociation and Ionization of H-2(+) in Intense Field.JOURNAL OF PHYSICAL CHEMISTRY A,118(39),9173-9181.
MLA Yao, Hongbin,et al."Theoretical Investigation of the Competitive Mechanism Between Dissociation and Ionization of H-2(+) in Intense Field".JOURNAL OF PHYSICAL CHEMISTRY A 118.39(2014):9173-9181.
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