| Autor: |
Barbanel', Yu., Dushin, R., Kolin, V., Kotlin, V., Nekhoroshkov, S., Chudnovskaya, G. |
| Zdroj: |
Radiochemistry; January 2001, Vol. 43 Issue: 1 p30-33, 4p |
| Abstrakt: |
Luminescence spectra of the cubic crystal of Cs2NaLuBr6:Am3+(2.5 mol % 243Am) were studied in the region of the (2G2, 5D2) → 7F0(460-490 nm) and 5L6→ 7F0(510-540 nm) transitions in the range from room temperature to 12 K. From the analysis of the vibronic pattern of the spectra, the zero-phonon 0-0 transitions forbidden for the Ohsymmetry were localized, and the first data on the splitting sublevels of the actinide element (Am3+, 5f6) in the field of the ideal octahedron of the AmBr63-type were obtained. It was found that in the wavelength ranges indicated, the crystal studied exhibits a fairly strong self-luminescence due to the α-decay energy of 243Am. |
| Databáze: |
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| Externí odkaz: |
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