DOI: 10.1063/1.1739887. Elementary Processes in the Radiation Chemistry of Water

Elementary Processes in the Radiation Chemistry of Water

10.1063/1.1739887

Crossref journal-article

AIP Publishing

The Journal of Chemical Physics (317)

Abstract

Schematic potential-energy diagrams are constructed for ground and excited states of H2O, H2O+ and H2O-, making use of thermochemical, spectroscopic, and electron-impact data. On electron impact a gaseous water molecule is raised to various states of H2O, H2O+ and H2O-, which may subsequently decompose to give H, O, H2, and OH and the ions H+, H-, O+, O-, OH+, and H2+. The exact mechanisms by which these atoms, radicals, and ions are produced are discussed in detail with reference to the potential-energy curves, due attention being paid to the appropriate correlation and selection rules. It is concluded that the production of O- at 173 kcal electron energy probably proceeds via a 2A1, 2B1, 2A2, or 2B2 state of H2O- which decomposes into 2H+O- without the prior formation of OH-. The production of O+ at 437 kcal must necessarily proceed via a 4A2 or 4B2 state of H2O+, while H2+ at 530 kcal must involve the formation of a 2A2 or 2B2 state; both these latter states are stable with respect to the simple breaking of an O—H bond. The nonappearance of OH- in electron-impact experiments is shown to be related to the high stability of OH-, states of H2O- which correlate with H+OH- being of very high energy. The bearing of the treatment on the radiation chemistry of liquid water is briefly considered.

Bibliography

Laidler, K. J. (1954). Elementary Processes in the Radiation Chemistry of Water. The Journal of Chemical Physics, 22(10), 1740â1745.

Authors 1

Keith J. Laidler (first)

References 16 Referenced 22

10.1143/JPSJ.4.230 / J. Phys. Soc., Japan (1949)
10.1143/JPSJ.7.193 / J. Phys. Soc., Japan (1952)
10.1063/1.1723619 / J. Chem. Phys. (1942)
10.1063/1.1723620 / J. Chem. Phys. (1942)
10.1063/1.1746304 / J. Chem. Phys. (1947)
{'key': '2024020815325909400_r6'}
10.1021/cr60150a001 / Chem. Revs. (1951)
10.1063/1.1749888 / J. Chem. Phys. (1936)
10.1063/1.1749908 / J. Chem. Phys. (1936)
10.1021/ja01161a026 / J. Am. Chem. Soc. (1950)
10.1021/ja01146a006 / J. Am. Chem. Soc. (1951)
{'key': '2024020815325909400_r12'}
10.1103/PhysRev.58.340 / Phys. Rev. (1940)
10.1063/1.1698979 / J. Chem. Phys. (1953)
{'key': '2024020815325909400_r15', 'first-page': '954', 'volume': '233', 'year': '1951', 'journal-title': 'Compt. Rend.'} / Compt. Rend. (1951)
10.1039/DF9521200133 / Discussions Faraday Soc. (1952)

Dates

Type	When
Created	20 years, 4 months ago (April 26, 2005, 10:08 a.m.)
Deposited	1 year, 6 months ago (Feb. 8, 2024, 11:54 a.m.)
Indexed	2 months ago (July 2, 2025, 12:53 p.m.)
Issued	70 years, 11 months ago (Oct. 1, 1954)
Published	70 years, 11 months ago (Oct. 1, 1954)
Published Print	70 years, 11 months ago (Oct. 1, 1954)

Funders 0

None

BibTeX

@article{Laidler_1954, title={Elementary Processes in the Radiation Chemistry of Water}, volume={22}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.1739887}, DOI={10.1063/1.1739887}, number={10}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Laidler, Keith J.}, year={1954}, month=oct, pages={1740–1745} }

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