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

T. Gejo; T. Ikegami; K. Honma; O. Takahashi; E. Shigemasa; Y. Hikosaka; Y. Tamenori

doi:10.1063/1.4880557

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

T. Gejo^*, T. Ikegami, K. Honma, O. Takahashi, E. Shigemasa, Y. Hikosaka, Y. Tamenori

^*Corresponding author for this work

Faculty of Liberal Arts and Sciences

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

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.

Original language	English
Article number	214310
Journal	Journal of Chemical Physics
Volume	140
Issue number	21
DOIs	https://doi.org/10.1063/1.4880557
State	Published - 2014/06/07

ASJC Scopus subject areas

General Physics and Astronomy
Physical and Theoretical Chemistry

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10.1063/1.4880557

Cite this

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title = "Dynamics of oxygen Rydberg atom generation following O 1 s inner-shell excitation of H2O",

abstract = "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.",

author = "T. Gejo and T. Ikegami and K. Honma and O. Takahashi and E. Shigemasa and Y. Hikosaka and Y. Tamenori",

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T1 - Dynamics of oxygen Rydberg atom generation following O 1 s inner-shell excitation of H2O

AU - Gejo, T.

AU - Ikegami, T.

AU - Honma, K.

AU - Takahashi, O.

AU - Shigemasa, E.

AU - Hikosaka, Y.

AU - Tamenori, Y.

PY - 2014/6/7

Y1 - 2014/6/7

N2 - 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.

AB - 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.

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