DOI: 10.1063/1.1674663. Time-of-Flight Spectroscopy of CO2 Photodissociation in the Vacuum Ultraviolet. Electron Emission from Cesium Surface by Metastable Singlet Oxygen Atoms

Time-of-Flight Spectroscopy of CO2 Photodissociation in the Vacuum Ultraviolet. Electron Emission from Cesium Surface by Metastable Singlet Oxygen Atoms

10.1063/1.1674663

Crossref journal-article

AIP Publishing

The Journal of Chemical Physics (317)

Abstract

Time-of-flight spectroscopy has been employed in conjunction with metastable photofragment detection by electron emission from metal surfaces to study the photodissociation of CO2 in the vacuum ultraviolet at wavelengths longer than 1050 Å. Irradiation was performed by unfiltered light. However, some wave-length selection was provided by the CO2 absorption itself and by choice of window material, LiF and CaF2. The metastable detector was coated with cesium. The photodissociation, CO2 + hυ→CO(X 1Σ)+O*, has been observed where O* can be O(1S) and/or O(1D) only. The result implies that the deactivation of metastable singlet oxygen atoms at a cesium surface produces electron emission. The analysis of the flight time distribution of O* shows that in the wavelength range from about 1160–1050 Å more than 50% of the dissociation leads to internally excited CO(X 1Σ) with considerable amounts of vibration-rotation energy.

Bibliography

Welge, K. H., & Gilpin, R. (1971). Time-of-Flight Spectroscopy of CO2 Photodissociation in the Vacuum Ultraviolet. Electron Emission from Cesium Surface by Metastable Singlet Oxygen Atoms. The Journal of Chemical Physics, 54(10), 4224â4227.

Authors 2

K. H. Welge (first)
R. Gilpin (additional)

References 17 Referenced 18

10.1063/1.1684695 / Rev. Sci. Instr. (1970)
10.1063/1.1671600 / J. Chem. Phys. (1969)
10.1103/PhysRev.158.49 / Phys. Rev. (1967)
10.1063/1.1712313 / J. Chem. Phys. (1967)
10.1063/1.1671322 / J. Chem. Phys. (1969)
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10.1063/1.1698637 / J. Chem. Phys. (1953)
{'key': '2024020907420477400_r7'}
10.1016/0032-0633(67)90154-7 / Planetary Space Sci. (1967)
10.1063/1.1669958 / J. Chem. Phys. (1968)
10.1063/1.1670793 / J. Chem. Phys. (1969)
10.1139/v69-307 / Can. J. Chem. (1969)
10.1063/1.1671952 / J. Chem. Phys. (1969)
10.1063/1.1672816 / J. Chem. Phys. (1970)
10.1063/1.1720656 / Rev. Sci. Instr. (1967)
{'key': '2024020907420477400_r13'}

Dates

Type	When
Created	21 years, 7 months ago (Feb. 6, 2004, 3:15 p.m.)
Deposited	1 year, 6 months ago (Feb. 9, 2024, 3:25 a.m.)
Indexed	1 year, 6 months ago (Feb. 9, 2024, 10:20 a.m.)
Issued	54 years, 3 months ago (May 15, 1971)
Published	54 years, 3 months ago (May 15, 1971)
Published Print	54 years, 3 months ago (May 15, 1971)

Funders 0

None

BibTeX

@article{Welge_1971, title={Time-of-Flight Spectroscopy of CO2 Photodissociation in the Vacuum Ultraviolet. Electron Emission from Cesium Surface by Metastable Singlet Oxygen Atoms}, volume={54}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.1674663}, DOI={10.1063/1.1674663}, number={10}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Welge, K. H. and Gilpin, R.}, year={1971}, month=may, pages={4224–4227} }

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