Radiation-stimulated processes under interaction of ions with porous structures

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Abstract

For objects with topological and fractal dimensions (using the example of a “Coulomb explosion”), the physics of modification of electron-stimulated processes in porous media under irradiation with multiply charged ions is considered. A quasi-one-dimensional model has been constructed, which is a convenient methodological approach that describes characteristic phenomena in various media. The results obtained are assessed within the framework of the “complexity” concept.

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About the authors

N. N. Nikiforova

Arifov Institute of Ion Plasma and Laser Technologies, Academy of Sciences of the Republic of Uzbekistan; Institute of Materials Science, Academy of Sciences of the Republic of Uzbekistan, Scientific and Production Association “Physics-Sun”

Email: oksengendlerbl@yandex.ru
Uzbekistan, Tashkent; Tashkent

B. L. Oksengendler

Institute of Materials Science, Academy of Sciences of the Republic of Uzbekistan, Scientific and Production Association “Physics-Sun”; Institute of Polymer Chemistry and Physics, Academy of Sciences of the Republic of Uzbekistan

Author for correspondence.
Email: oksengendlerbl@yandex.ru
Uzbekistan, Tashkent; Tashkent

Kh. B. Ashurov

Arifov Institute of Ion Plasma and Laser Technologies, Academy of Sciences of the Republic of Uzbekistan

Email: oksengendlerbl@yandex.ru
Uzbekistan, Tashkent

B. R. Kutlimurotov

Arifov Institute of Ion Plasma and Laser Technologies, Academy of Sciences of the Republic of Uzbekistan

Email: oksengendlerbl@yandex.ru
Uzbekistan, Tashkent

S. Е. Maksimov

Arifov Institute of Ion Plasma and Laser Technologies, Academy of Sciences of the Republic of Uzbekistan

Email: oksengendlerbl@yandex.ru
Uzbekistan, Tashkent

О. А. Galkina

Institute of Polymer Chemistry and Physics, Academy of Sciences of the Republic of Uzbekistan

Email: oksengendlerbl@yandex.ru
Uzbekistan, Tashkent

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Supplementary files

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2. Fig. 1. Scheme of the extended concept 'Complexity' applied to radiation effects in complex media.

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3. Fig. 2. Atomic structures with different topological dimensionality: a — three-dimensional; b — two-dimensional; c — one-dimensional chain.

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4. Fig. 3. Characteristic dependence of destruction cross-section on topological dimensionality.

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5. Fig. 4. Scheme of superposition of the Coulomb field of the Auger charge on the potential relief of electrons in the case of: a — strictly periodic relief of the electron potential; b — Anderson aperiodic chain.

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6. Fig. 5. Fractal pore containing both concave surface regions α, where the interaction of neighboring atoms is suppressed, and convex region β, where the interaction of neighboring atoms is enhanced.

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7. Fig. 6. Areas of a fractal surface with different curvature of local regions and, accordingly, with different overlap of the wave functions of neighboring atoms: ΔEV0 — corresponds to the width of the allowed valence band for flat surface areas; ΔEV — for concave surface areas with increased valence band width; — for convex areas with reduced overlap of the wave functions of neighboring atoms and narrowing of the valence band. This corresponds to both lower and higher radiation susceptibility, respectively.

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