In-situ high resolution photoelectron spectroscopy study on interaction of sodium with UO2+x film (0 ≤ x ≤ 1)

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F21%3A00553306" target="_blank" >RIV/68378271:_____/21:00553306 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11320/21:10425287

Result on the web

<a href="http://hdl.handle.net/11104/0328301" target="_blank" >http://hdl.handle.net/11104/0328301</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jnucmat.2020.152646" target="_blank" >10.1016/j.jnucmat.2020.152646</a>

Result language

angličtina

Original language name

In-situ high resolution photoelectron spectroscopy study on interaction of sodium with UO2+x film (0 ≤ x ≤ 1)

Original language description

We studied in-situ the interaction of sodium metal with UO2+x (0 ≤ x ≤ 1) using thin films prepared by sputter deposition on Au substrate. X-ray Photoelectron Spectroscopy (XPS) and Grazing Incidence X-Ray Diffraction (GIXRD) characterized films before and after interaction. The results show that sodium does not reduce stoichiometric UO2 at room temperature. Molecular and atomic oxygen affect differently the oxidation of uranium and sodium. The wetting of the gold by the sodium is much more important when sodium is oxidised by atomic oxygen. Atomic oxygen seems to play the same role as the interstitial oxygen present in the UO2+x film. The oxygen dissociation may be the limiting step of sodium oxidation on gold and on UO2. Heat treatment of sodium on UO3 at about 773 K leads to the formation of the NaUO3 film. Once U(V) is formed, it stays stable up to at least 973 K, the temperature at which shrinkage of the film is observed.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10402 - Inorganic and nuclear chemistry

Project

<a href="/en/project/EF15_003%2F0000485" target="_blank" >EF15_003/0000485: Nanomaterials centre for advanced applications</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Nuclear Materials

ISSN

0022-3115

e-ISSN

1873-4820

Volume of the periodical

545

Issue of the periodical within the volume

Mar.

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

9

Pages from-to

152646

UT code for WoS article

000608779900018

EID of the result in the Scopus database

2-s2.0-85097062459