Dynamics of oxygen Rydberg atom generation following O 1s inner-shell excitation of H2O

被引：5
|
作者：
Gejo, T. [1 ]
Ikegami, T. [1 ]
Honma, K. [1 ]
Takahashi, O. [2 ]
Shigemasa, E. [3 ]
Hikosaka, Y. [4 ]
Tamenori, Y. [5 ]
机构：
[1] Univ Hyogo, Kamigori, Hyogo 6781297, Japan
[2] Hiroshima Univ, Higashihiroshima 7398512, Japan
[3] Inst Mol Sci, UVSOR Facil, Okazaki, Aichi 4448585, Japan
[4] Niigata Univ, Dept Environm Sci, Nishi Ku, Niigata 9502181, Japan
[5] JASRI, Sayo, Hyogo 6795198, Japan
来源：
JOURNAL OF CHEMICAL PHYSICS | 2014年 / 140卷 / 21期
关键词：
POST-COLLISION-INTERACTION; POSTCOLLISION INTERACTIONS; PHOTOELECTRON RECAPTURE; THRESHOLD; ELECTRONS; DENSITY; ENERGY;
D O I：
10.1063/1.4880557
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：
The emission of low-energy electrons from H2O has been investigated at photon excitation energies in the vicinity of the O 1s ionization threshold. Neutral oxygen Rydberg atoms (O*) were found to form, and the correlation between the initial inner-shell excited state of H2O and the Rydberg state of O* was determined. The initially excited electron in a Rydberg orbital is shown to remain associated with O* even after the cleavage of two O-H bonds. We also show that the energy discrepancy between two Rydberg states of H2O and O* can be explained by the influence of the post-collision interaction, which becomes stronger as the excitation energy approaches the 1s ionization threshold. (C) 2014 AIP Publishing LLC.
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页数：7
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