Particle Dependence of Quenching Effect in an Optical-Fiber-Type Optically Stimulated Luminescence Dosimeter

被引：20

作者：

Hirata, Yuho ^{[1
]}

Watanabe, Kenichi ^{[1
]}

Yoshihashi, Sachiko ^{[1
]}

Uritani, Akira ^{[1
]}

Koba, Yusuke ^{[2
]}

Naruhiro, Matsufuj, I ^{[2
]}

Yanagida, Takayuki ^{[3
]}

Toshito, Toshiyuki ^{[4
]}

Fukuda, Kentaro ^{[5
]}

机构：

[1] Nagoya Univ, Grad Sch Engn, Chikusa Ku, Nagoya, Aichi 4648603, Japan

[2] Natl Inst Radiol Sci, Inage Ku, 4-9-1 Anagawa, Chiba, Chiba 2638555, Japan

[3] Nara Inst Sci & Technol, Ikoma, Nara 6300192, Japan

[4] Nagoya Proton Therapy Ctr, Kita Ku, 1-1-1 Hirate, Nagoya, Aichi 4620057, Japan

[5] Tokuyama Corp, 1-1 Mikage, Shunan, Yamaguchi 7458648, Japan

来源：

SENSORS AND MATERIALS | 2017年 / 29卷 / 10期

关键词：

dosimeter; heavy-ion radiotherapy; optically stimulated luminescence; optical fiber probe; quenching phenomena; PROTON-BEAMS; REAL-TIME; KBR-EU; SCINTILLATION; RADIOTHERAPY; SYSTEM;

D O I：

10.18494/SAM.2017.1626

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

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.

引用

页码：1455 / 1464

页数：10

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