High-pressure fluorescence line-narrowing

Lochhead and Bray (1995) studied Eu3+ doped sodium disilicate glass with a high-pressure fluorescence line-narrowing technique. This technique was used to characterize the local structure of the Eu3+ ions up to a pressure of 21 GPa. For the crystal-field analysis they assumed a C2v site symmetry which allowed for a complete splitting of the crystal-field components. The crystal-field strength was determined according to eq. (11). The effect of pressure... 

Fig. 35. High pressure fluorescence line narrowing spectra of Eu " in Na20-2Si02 glass at 77 K and 66 kbar. The excitation wavelength of each spectrum is indicated by the downward arrow and is listed to the right of each spectrum. Spectra are normalized to the Dq —> Fi peak intensity...

Our study represents the first example of high pressure fluorescence line narrowing spectroscopy and demonstrates the ability of site selective spectroscopy to gain new insight into the effect of pressure on local structure in amorphous... 

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