TY - JOUR
T1 - Optical and Scintillation Properties of Tb-Doped Rare-Earth Pyrosilicate Single Crystals
AU - Kantuptim, Prom
AU - Kato, Takumi
AU - Nakauchi, Daisuke
AU - Kawaguchi, Noriaki
AU - Watanabe, Kenichi
AU - Yanagida, Takayuki
N1 - Funding Information:
This work was supported by the Cooperative Research Project of the Research Center for Biomedical Engineering, Nippon Sheet Glass Foundation, and Iketani Science and Technology. In addition, the Japan Society for the Promotion of Science (JSPS) is also acknowledged for Grant-in-Aid for Scientific Research A (22H00309), B (21H03733, 21H03736, and 22H02939), Grant-in-Aid for Exploratory Research (22K18997), and Early-Career Scientists (20K20104).
Publisher Copyright:
© 2022 by the authors.
PY - 2022/10
Y1 - 2022/10
N2 - Series of 1.0% Terbium (Tb)-doped rare-earth pyrosilicate single crystals including Lu2Si2O7 (LPS), Y2Si2O7 (YPS), Gd2Si2O7 (GPS), and La2Si2O7 (LaPS) have been prepared by the floating-zone method. After the phase confirmation by powder X-ray diffraction, the properties are measured on both photoluminescence and scintillation aspects, including the photoluminescence emission contour graph and decay times, X-ray induced scintillation spectra and decay times, afterglow profiles, and the recently developed pulse height spectra for scintillators with millisecond decay time. The results indicate the multiple emissions from Tb3+ 4f-4f transition with the dominant emission at 540 nm (5D4 → 7F5) on both ultraviolet and X-ray excitation with the decay time around 2.6–5.6 and 1.3–3.2 ms, respectively. Under the γ-ray irradiation from 137Cs, the Tb-doped LPS, YPS, GPS, and LaPS have presented scintillation light yields of 20,700, 29,600, 95,600, and 47,700 ph/MeV with ±10%, respectively, which considerably very high among the oxide scintillators.
AB - Series of 1.0% Terbium (Tb)-doped rare-earth pyrosilicate single crystals including Lu2Si2O7 (LPS), Y2Si2O7 (YPS), Gd2Si2O7 (GPS), and La2Si2O7 (LaPS) have been prepared by the floating-zone method. After the phase confirmation by powder X-ray diffraction, the properties are measured on both photoluminescence and scintillation aspects, including the photoluminescence emission contour graph and decay times, X-ray induced scintillation spectra and decay times, afterglow profiles, and the recently developed pulse height spectra for scintillators with millisecond decay time. The results indicate the multiple emissions from Tb3+ 4f-4f transition with the dominant emission at 540 nm (5D4 → 7F5) on both ultraviolet and X-ray excitation with the decay time around 2.6–5.6 and 1.3–3.2 ms, respectively. Under the γ-ray irradiation from 137Cs, the Tb-doped LPS, YPS, GPS, and LaPS have presented scintillation light yields of 20,700, 29,600, 95,600, and 47,700 ph/MeV with ±10%, respectively, which considerably very high among the oxide scintillators.
UR - http://www.scopus.com/inward/record.url?scp=85140886160&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85140886160&partnerID=8YFLogxK
U2 - 10.3390/photonics9100765
DO - 10.3390/photonics9100765
M3 - Article
AN - SCOPUS:85140886160
SN - 2304-6732
VL - 9
JO - Photonics
JF - Photonics
IS - 10
M1 - 765
ER -