The radioluminescence investigation of lead sodium borate doped with Sm3+ glass scintillator

초록

The effects of Sm3+-doped lead sodium borate glasses in compositions of (79-x)B2O3: 20Na(2)O: xPbO: 1Sm(2)O(3) with x = 0, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50 and 55 mol% were studied by using the melt-quenching technique. The glass samples were characterized the spectroscopic properties. From the photoluminescence, the emission spectra of glasses showed 4 peaks bands at 563((4)G(5/2) -> H-6(5/2)), 599((4)G(5/2) -> H-6(7/2)), 645((4)G(5/2) -> H-6(9/2)), and 706((4)G(5/2) -> (6)H(11/)2) nm. The maximum intensity was identified at 10 mol% of PbO. Similarly, the radioluminescence spectra (RL) of the glasses were found in 4 emission bands, The strongest emission peak of RL was 597 nm at 5 mol% of PbO. The maximum intensity of PL and RL shows the difference in PbO content due to the difference in interaction mechanisms of host material and activator from UV and X-ray excitation. The absorption spectra revealed the highest emission wavelength at 599 nm. The color coordinate in CIE-1931 was found to locate in the orange region.

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