Study of the Radiation Resistance of Endohedral Fullerenes of Rare-Earth Elements and Their Water-Soluble Derivatives
| Autor: | V. A. Shilin, M. V. Suyasova, A. A. Szhogina, I. M. Dubovskii, V. T. Lebedev, V. P. Sedov |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Fullerene Absorption cross section chemistry.chemical_element 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Neutron temperature 0104 chemical sciences Neutron capture chemistry Endohedral fullerene Physical chemistry General Materials Science Neutron 0210 nano-technology Europium Radiation resistance |
| Zdroj: | Crystallography Reports. 63:132-138 |
| ISSN: | 1562-689X 1063-7745 |
| Popis: | Endohedral metallofullerenes Me@C2n (n = 30–50), their hydroxylated derivatives Me@C2n(OH)38–40 (Me = Tm, Ho, Eu, Sm, Co), and fullerenol С60(OH)38 have been synthesized The radiation resistance of these structures under irradiation in reactor by thermal and fast neutron fluxes in the fluence range of 1018–1019 cm–2 (cadmium ratio of ~10) has been analyzed. Endofullerenols are shown to be more stable in comparison with initial endohedral fullerenes; the molecules containing Eu and Sm (atoms characterized by the largest slow-neutron absorption cross section) turned out to be most stable. The mechanism of the formation of secondary Eu and Sm endofullerenols is discussed taking into account the neutron capture and emission of γ quanta by excited nuclei, which acquire the recoil energy. |
| Databáze: | OpenAIRE |
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