TY - JOUR
T1 - Particle dependence of quenching effect in an optical-fiber-type optically stimulated luminescence dosimeter
AU - Hirata, Yuho
AU - Watanabe, Kenichi
AU - Yoshihashi, Sachiko
AU - Uritani, Akira
AU - Koba, Yusuke
AU - Matsufuji, Naruhiro
AU - Yanagida, Takayuki
AU - Toshito, Toshiyuki
AU - Fukuda, Kentaro
N1 - Funding Information:
This work was supported by JSPS KAKENHI Grant Number JP17J05849.
Publisher Copyright:
© MYU K.K.
PY - 2017
Y1 - 2017
N2 - To monitor an actual dose in a patient's body during radiotherapy treatment, we have developed a small-size dosimeter of an optical fiber probe mounting optically stimulated luminescence (OSL) materials at the tip. The OSL materials show a quenching effect when they are irradiated by charged particles with high linear energy transfer (LET). We evaluate the particle dependence on the quenching effect in the small-size OSL dosimeter probe. Eu:BaFBr and Ce:CaF2 were adopted as OSL materials, and two types of small-size dosimeter were fabricated. We irradiated 290 MeV/u carbon ions, 150 MeV/u helium ions, and 225 MeV protons and measured the Bragg peak. The Eu:BaFBr small-size dosimeter showed the quenching effect in these three types of particle irradiation. The Ce:CaF2 small-size dosimeter showed the quenching effect only in carbon ion irradiation. The luminescence efficiencies of Eu:BaFBr were compared among these three charged particles. The quenching effect of Eu:BaFBr is independent of the irradiated particles.
AB - To monitor an actual dose in a patient's body during radiotherapy treatment, we have developed a small-size dosimeter of an optical fiber probe mounting optically stimulated luminescence (OSL) materials at the tip. The OSL materials show a quenching effect when they are irradiated by charged particles with high linear energy transfer (LET). We evaluate the particle dependence on the quenching effect in the small-size OSL dosimeter probe. Eu:BaFBr and Ce:CaF2 were adopted as OSL materials, and two types of small-size dosimeter were fabricated. We irradiated 290 MeV/u carbon ions, 150 MeV/u helium ions, and 225 MeV protons and measured the Bragg peak. The Eu:BaFBr small-size dosimeter showed the quenching effect in these three types of particle irradiation. The Ce:CaF2 small-size dosimeter showed the quenching effect only in carbon ion irradiation. The luminescence efficiencies of Eu:BaFBr were compared among these three charged particles. The quenching effect of Eu:BaFBr is independent of the irradiated particles.
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U2 - 10.18494/SAM.2017.1626
DO - 10.18494/SAM.2017.1626
M3 - Article
AN - SCOPUS:85031900551
SN - 0914-4935
VL - 29
SP - 1455
EP - 1464
JO - Sensors and Materials
JF - Sensors and Materials
IS - 10
ER -