TY - GEN
T1 - Optical and scintillation properties of Eu-doped calcium orthoborate
AU - Fujimoto, Y.
AU - Futami, Y.
AU - Yanagida, T.
AU - Kurosawa, S.
AU - Kawaguchi, N.
AU - Fukuda, K.
AU - Totsuka, D.
AU - Yoshikawa, A.
PY - 2012
Y1 - 2012
N2 - Single crystals of Eu-doped calcium orthoborate have been grown by micro-pulling (μ-PD) technique with radio frequency heating system, and its transmittance, photoluminescence and radiation responses were investigated. In transmittance spectra, Eu-doped crystal showed broad absorption band around 200-450 nm, which is due to the complex of charge transfer (CT) transition and 4f-4f transition of Eu3+. Intense Eu2+ 5f-4f and Eu 3+ 4f-4f emission peaks were observed when excited to 265 nm and 385 nm, and the calculated decay times were 230 ns and 1.5 ms, respectively. 241Am 5.5 MeV α-ray excited radioluminescence spectra indicated both Eu2+ 5f-4f and Eu3+ 4f-4f emission peaks.
AB - Single crystals of Eu-doped calcium orthoborate have been grown by micro-pulling (μ-PD) technique with radio frequency heating system, and its transmittance, photoluminescence and radiation responses were investigated. In transmittance spectra, Eu-doped crystal showed broad absorption band around 200-450 nm, which is due to the complex of charge transfer (CT) transition and 4f-4f transition of Eu3+. Intense Eu2+ 5f-4f and Eu 3+ 4f-4f emission peaks were observed when excited to 265 nm and 385 nm, and the calculated decay times were 230 ns and 1.5 ms, respectively. 241Am 5.5 MeV α-ray excited radioluminescence spectra indicated both Eu2+ 5f-4f and Eu3+ 4f-4f emission peaks.
KW - Borate
KW - Luminescence
KW - Scintillator
KW - Single crystal
UR - http://www.scopus.com/inward/record.url?scp=84859729157&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84859729157&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/KEM.508.235
DO - 10.4028/www.scientific.net/KEM.508.235
M3 - Conference contribution
AN - SCOPUS:84859729157
SN - 9783037853764
T3 - Key Engineering Materials
SP - 235
EP - 239
BT - Materials Integration
PB - Trans Tech Publications Ltd
T2 - Int. Symposium of GCOE: Materials Integration, in Conjunction with the 2nd Int. Symposium on Advanced Synthesis and Processing Technology for Materials, ASPT 2011 and the 8th Materials Science School for Young Scientists, KINKEN-WAKATE 2011
Y2 - 1 December 2011 through 2 December 2011
ER -