TY - JOUR
T1 - Luminescence property of rare-earth-doped bismuth-borate glasses with different concentrations of bismuth and rare-earth material
AU - Park, J. M.
AU - Kim, H. J.
AU - Limsuwan, P.
AU - Kaewkhao, J.
PY - 2012
Y1 - 2012
N2 - Bismuth-borate glass scintillators have high density and good radiation hardness. Thus, if they are highly luminescent, they can be applied in astrophysics, high-energy and nuclear physics, homeland security, radiation detection and medical imaging. Bismuth-borate glasseswith the formula xBi 2O 3:(100 - x)B 2O 3 (x = 30, 50, and 66. 7 mol%) were fabricated and doped with Nd, Er, Dy, Pr, Sm, Ho, Gd, and Ce in different dopant concentrations by using the melt-quenching technique. The X-ray emission spectra for the bismuth-borate glasses were measured and showed that only Sm-, Dy-, and Nd-doped glass scintillators had noticeable luminescence. Also, we measured the photo-luminescence and the proton-induced emission spectra. We obtained the result that Sm- and Dy- doped glass scintillators emitted luminescence. The emission peaks of the Sm- doped glass were 569, 598, 641, and 708 nm and were due to ( 4G 5/2 → 6H J) (J = 5/2, 7/2, 9/2, 11/2) transitions, respectively. The emission peaks of the Dy- doped glass were at 485 nm ( 4F 9/2 → 6H 15/2), 575 nm ( 4F 9/2 → 6H 13/2), 660 nm ( 4F 9/2 → 6H 11/2), and 755 nm ( 4F 9/2 → 6H 9/2 + 6H 11/2), and that of the Nd-doped glass was at 895 nm due to the ( 4F 3/2 → 4I 9/2) transition. The luminescence intensities were compared in terms of different Bi concentrations and dopant concentrations.
AB - Bismuth-borate glass scintillators have high density and good radiation hardness. Thus, if they are highly luminescent, they can be applied in astrophysics, high-energy and nuclear physics, homeland security, radiation detection and medical imaging. Bismuth-borate glasseswith the formula xBi 2O 3:(100 - x)B 2O 3 (x = 30, 50, and 66. 7 mol%) were fabricated and doped with Nd, Er, Dy, Pr, Sm, Ho, Gd, and Ce in different dopant concentrations by using the melt-quenching technique. The X-ray emission spectra for the bismuth-borate glasses were measured and showed that only Sm-, Dy-, and Nd-doped glass scintillators had noticeable luminescence. Also, we measured the photo-luminescence and the proton-induced emission spectra. We obtained the result that Sm- and Dy- doped glass scintillators emitted luminescence. The emission peaks of the Sm- doped glass were 569, 598, 641, and 708 nm and were due to ( 4G 5/2 → 6H J) (J = 5/2, 7/2, 9/2, 11/2) transitions, respectively. The emission peaks of the Dy- doped glass were at 485 nm ( 4F 9/2 → 6H 15/2), 575 nm ( 4F 9/2 → 6H 13/2), 660 nm ( 4F 9/2 → 6H 11/2), and 755 nm ( 4F 9/2 → 6H 9/2 + 6H 11/2), and that of the Nd-doped glass was at 895 nm due to the ( 4F 3/2 → 4I 9/2) transition. The luminescence intensities were compared in terms of different Bi concentrations and dopant concentrations.
KW - Bismuth-borate glass
KW - Luminescence
KW - Rare-earth
KW - Scintillator
UR - http://www.scopus.com/inward/record.url?scp=84866363457&partnerID=8YFLogxK
U2 - 10.3938/jkps.61.248
DO - 10.3938/jkps.61.248
M3 - Article
AN - SCOPUS:84866363457
SN - 0374-4884
VL - 61
SP - 248
EP - 253
JO - Journal of the Korean Physical Society
JF - Journal of the Korean Physical Society
IS - 2
ER -