A model of early formation of uranium molecular oxides in laser-ablated plasmas

Mikhail S. Finko; Davide Curreli; David G. Weisz; Jonathan C. Crowhurst; Timothy P. Rose; Batikan Koroglu; Harry B. Radousky; Michael R. Armstrong

doi:10.1088/1361-6463/aa92f5

A model of early formation of uranium molecular oxides in laser-ablated plasmas

Mikhail S. Finko, Davide Curreli, David G. Weisz, Jonathan C. Crowhurst, Timothy P. Rose, Batikan Koroglu, Harry B. Radousky, Michael R. Armstrong

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

Abstract

In this work, we present a newly constructed U_xO_y reaction mechanism that consists of 30 reaction channels (21 of which are reversible channels) for 11 uranium molecular species (including ions). Both the selection of reaction channels and calculation of corresponding rate coefficients is accomplished via a comprehensive literature review and application of basic reaction rate theory. The reaction mechanism is supplemented by a detailed description of oxygen plasma chemistry (19 species and 142 reaction channels) and is used to model an atmospheric laser ablated uranium plume via a 0D (global) model. The global model is used to analyze the evolution of key uranium molecular species predicted by the reaction mechanism, and the initial stage of formation of uranium oxide species.

Original language	English (US)
Article number	485201
Journal	Journal of Physics D: Applied Physics
Volume	50
Issue number	48
DOIs	https://doi.org/10.1088/1361-6463/aa92f5
State	Published - Nov 6 2017

Keywords

atmospheric pressure plasma
kinetic modeling
laser ablation
plasma chemistry
uranium fractionation

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Acoustics and Ultrasonics
Surfaces, Coatings and Films

Online availability

10.1088/1361-6463/aa92f5

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abstract = "In this work, we present a newly constructed UxOy reaction mechanism that consists of 30 reaction channels (21 of which are reversible channels) for 11 uranium molecular species (including ions). Both the selection of reaction channels and calculation of corresponding rate coefficients is accomplished via a comprehensive literature review and application of basic reaction rate theory. The reaction mechanism is supplemented by a detailed description of oxygen plasma chemistry (19 species and 142 reaction channels) and is used to model an atmospheric laser ablated uranium plume via a 0D (global) model. The global model is used to analyze the evolution of key uranium molecular species predicted by the reaction mechanism, and the initial stage of formation of uranium oxide species.",

keywords = "atmospheric pressure plasma, kinetic modeling, laser ablation, plasma chemistry, uranium fractionation",

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AU - Finko, Mikhail S.

AU - Curreli, Davide

AU - Weisz, David G.

AU - Crowhurst, Jonathan C.

AU - Rose, Timothy P.

AU - Koroglu, Batikan

AU - Radousky, Harry B.

AU - Armstrong, Michael R.

PY - 2017/11/6

Y1 - 2017/11/6

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AB - In this work, we present a newly constructed UxOy reaction mechanism that consists of 30 reaction channels (21 of which are reversible channels) for 11 uranium molecular species (including ions). Both the selection of reaction channels and calculation of corresponding rate coefficients is accomplished via a comprehensive literature review and application of basic reaction rate theory. The reaction mechanism is supplemented by a detailed description of oxygen plasma chemistry (19 species and 142 reaction channels) and is used to model an atmospheric laser ablated uranium plume via a 0D (global) model. The global model is used to analyze the evolution of key uranium molecular species predicted by the reaction mechanism, and the initial stage of formation of uranium oxide species.

KW - atmospheric pressure plasma

KW - kinetic modeling

KW - laser ablation

KW - plasma chemistry

KW - uranium fractionation

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A model of early formation of uranium molecular oxides in laser-ablated plasmas

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