Zircon reabsorption lines

Thorite and orangite (orange thorite) have a tetragonal structure and are isostructural with zircon. Steady-state spectra under X-ray and laser (337 nm) excitations are connected with REE " ", namely Sm " ", Tb ", Dy " " and Eu ". Reabsorption lines of Nd " have been also detected (Gorobets and Rogojine 2001). Laser-induced time-resolved luminescence enables us to detect Eu " and uranyl emission centers (Eig. 4.70). 

The reabsorption lines of have been found in zircon (Gaft et al. 1986) luminescence spectra. The strongest reabsorption lines at 592 and 656 nm are (Fig. 4.39b) clearly seen, which are totally identical to absorption lines of in zircon (Platonov et al. 1989). 

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See also in sourсe #XX -- [ ]

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