The effect of complexing processes on energy transfer Tl+{r_arrow}Gd{sup 3} and Tl+{r_arrow}Tb{sup 3+} in glass
- Kiev Univ. (Russian Federation); and others
The authors` studies have shown that three types of Tl{sup +} luminescence centers are formed in Tl{sup +}-activated chlorine-containing sodium-borate glass. These centers differ from one another in the number of Cl{sup -} ions contained in the first coordination sphere of Tl{sup +}. They were identified accordingly as 0-, 1-, and 2-centers of Tl{sup +}. The excitation (ES) and luminescence (LS) spectra of the 1- and 2-centers of Tl{sup +} are shifted into the region with lower energies in comparison with the spectra of 0-centers of Tl{sup +}, the LS of the 0-centers of Tl{sup +} are overlapped by the absorption spectrum (AS) of Gd{sup 3+} ions, and the LS of the 1- and 2-centers of Tl{sup +} overlaps the spectral range containing Tb{sup 3+} absorption lines. In view of the data on the overlapping of LS of Tl{sup +} ions in sodium-borate glasses by AS of REI (Gd{sup 3} and Tb{sup 3+}), one can expect effective radiationless energy transfer (RLET) Tl{sup +} {yields} Gd{sup 3+} and Tl{sup +} {yields} Tb{sup 3+}, which is an object of study in the present work.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 269877
- Journal Information:
- Journal of Applied Spectroscopy, Vol. 62, Issue 3; Other Information: PBD: Nov-Dec 1995; TN: Translated from Zhurnal Prikladnoi Spektroskopii; 62: No. 3, 192-196(May-Jun 1995)
- Country of Publication:
- United States
- Language:
- English
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