Hydrogen-oxygen accumulation on polycrystalline uranium surfaces

E. Swissa; I. Jacob; U. Atzmony; N. Shamir; M. H. Mintz

doi:10.1016/0039-6028(89)90685-7

Hydrogen-oxygen accumulation on polycrystalline uranium surfaces

E. Swissa, I. Jacob, U. Atzmony, N. Shamir, M. H. Mintz

Unit of Nuclear Engineering

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

9 Scopus citations

Abstract

The kinetics of accumulation of hydrogen on clean and on oxidized uranium surfaces was studied by combined direct recoil spectrometry (DRS), Auger electron spectroscopy (AES) and X-ray photoelectron spectroscopy (XPS) techniques. For the sputter-cleaned surface an island growth progression characterizes the accumulation kinetics of hydrogen, whereas on the oxidized surface a random two-site Langmuir model seems to fit the initial chemisorption process. Similar combined DRS and AES measurements were applied to study the kinetics of accumulation of oxygen on H₂ predosed uranium as compared to the clean (H-free) case. The pre-chemisorption of hydrogen modifies the mechanism of oxygen incorporation and the structure of the product overlayer.

Original language	English
Pages (from-to)	607-620
Number of pages	14
Journal	Surface Science
Volume	223
Issue number	3
DOIs	https://doi.org/10.1016/0039-6028(89)90685-7
State	Published - 2 Dec 1989

ASJC Scopus subject areas

Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films
Materials Chemistry

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10.1016/0039-6028(89)90685-7

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title = "Hydrogen-oxygen accumulation on polycrystalline uranium surfaces",

abstract = "The kinetics of accumulation of hydrogen on clean and on oxidized uranium surfaces was studied by combined direct recoil spectrometry (DRS), Auger electron spectroscopy (AES) and X-ray photoelectron spectroscopy (XPS) techniques. For the sputter-cleaned surface an island growth progression characterizes the accumulation kinetics of hydrogen, whereas on the oxidized surface a random two-site Langmuir model seems to fit the initial chemisorption process. Similar combined DRS and AES measurements were applied to study the kinetics of accumulation of oxygen on H2 predosed uranium as compared to the clean (H-free) case. The pre-chemisorption of hydrogen modifies the mechanism of oxygen incorporation and the structure of the product overlayer.",

author = "E. Swissa and I. Jacob and U. Atzmony and N. Shamir and Mintz, {M. H.}",

note = "Funding Information: This work was partially supported by grant I-04-016.5/87 from the German Israeli Foundation for Scientific Research and Development (GIF). The authors want also to thank D. Hirshler for his useful technical aid.",

year = "1989",

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doi = "10.1016/0039-6028(89)90685-7",

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TY - JOUR

T1 - Hydrogen-oxygen accumulation on polycrystalline uranium surfaces

AU - Swissa, E.

AU - Jacob, I.

AU - Atzmony, U.

AU - Shamir, N.

AU - Mintz, M. H.

N1 - Funding Information: This work was partially supported by grant I-04-016.5/87 from the German Israeli Foundation for Scientific Research and Development (GIF). The authors want also to thank D. Hirshler for his useful technical aid.

PY - 1989/12/2

Y1 - 1989/12/2

N2 - The kinetics of accumulation of hydrogen on clean and on oxidized uranium surfaces was studied by combined direct recoil spectrometry (DRS), Auger electron spectroscopy (AES) and X-ray photoelectron spectroscopy (XPS) techniques. For the sputter-cleaned surface an island growth progression characterizes the accumulation kinetics of hydrogen, whereas on the oxidized surface a random two-site Langmuir model seems to fit the initial chemisorption process. Similar combined DRS and AES measurements were applied to study the kinetics of accumulation of oxygen on H2 predosed uranium as compared to the clean (H-free) case. The pre-chemisorption of hydrogen modifies the mechanism of oxygen incorporation and the structure of the product overlayer.

AB - The kinetics of accumulation of hydrogen on clean and on oxidized uranium surfaces was studied by combined direct recoil spectrometry (DRS), Auger electron spectroscopy (AES) and X-ray photoelectron spectroscopy (XPS) techniques. For the sputter-cleaned surface an island growth progression characterizes the accumulation kinetics of hydrogen, whereas on the oxidized surface a random two-site Langmuir model seems to fit the initial chemisorption process. Similar combined DRS and AES measurements were applied to study the kinetics of accumulation of oxygen on H2 predosed uranium as compared to the clean (H-free) case. The pre-chemisorption of hydrogen modifies the mechanism of oxygen incorporation and the structure of the product overlayer.

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U2 - 10.1016/0039-6028(89)90685-7

DO - 10.1016/0039-6028(89)90685-7

M3 - Article

AN - SCOPUS:24844472109

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VL - 223

SP - 607

EP - 620

JO - Surface Science

JF - Surface Science

IS - 3

ER -

Hydrogen-oxygen accumulation on polycrystalline uranium surfaces

Abstract

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