Electronic state change of zirconium atoms by photochemical transformations at the surface of zircon (ZrSiO4) initiated by infrared laser radiation

Anel F. Mukhammedgalieva; Anatolij M. Bondar; Victor T. Dubinchuk; Igor M. Swedov

doi:10.1117/12.340026

5 February 1999 Electronic state change of zirconium atoms by photochemical transformations at the surface of zircon (ZrSiO₄) initiated by infrared laser radiation

Anel F. Mukhammedgalieva, Anatolij M. Bondar, Victor T. Dubinchuk, Igor M. Swedov

Author Affiliations +

Proceedings Volume 3732, ICONO '98: Laser Spectroscopy and Optical Diagnostics: Novel Trends and Applications in Laser Chemistry, Biophysics, and Biomedicine; (1999) https://doi.org/10.1117/12.340026
Event: ICONO '98: Laser Spectroscopy and Optical Diagnostics: Novel Trends and Applications in Laser Chemistry, Biophysics, and Biomedicine, 1998, Moscow, Russian Federation

Abstract

The photochemical transformations at the surface of single crystal zircon (ZrSiO₄) induced by the action of continuous CO₂ laser radiation (10⁵ - 10⁶ W/cm²) has been investigated. It has been found that the action of infrared laser radiation on the surface of zircon results in a selective sublimation of silicon oxides as well as in a change of electronic state of zirconium atoms included in the silicate matrix. The change of electronic state of zirconium atoms is confirmed by the change of the relation of K- and L-component intensity in X-ray emission spectra recorded by an X-ray microprobe analysis of irradiated samples. This change is connected with the decrease of a shielding of inside electrons and the delocalization of electron density into position of defects. The appearance of nonequilibrium electronic states of zirconium atoms is accompanied with the creation of the defect metallic clusters, in which the part of oxygen atoms is removed by laser sublimation of silicon-oxygen groups.

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Anel F. Mukhammedgalieva, Anatolij M. Bondar, Victor T. Dubinchuk, and Igor M. Swedov "Electronic state change of zirconium atoms by photochemical transformations at the surface of zircon (ZrSiO₄) initiated by infrared laser radiation", Proc. SPIE 3732, ICONO '98: Laser Spectroscopy and Optical Diagnostics: Novel Trends and Applications in Laser Chemistry, Biophysics, and Biomedicine, (5 February 1999); https://doi.org/10.1117/12.340026

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KEYWORDS

Zirconium

Chemical species

X-rays

Silicon

Infrared lasers

Semiconductor lasers

Carbon dioxide lasers

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