Time-resolved radiation dosimetry using a cerium and terbium Co-doped YAG crystal scintillator

被引：5

作者：

Basaif, A. ^{[1
]}

Oresegun, Adebiyi ^{[1
]}

Zubair, H. T. ^{[1
,5
]}

Zin, Hafiz ^{[2
]}

Choo, K. Y. ^{[1
]}

Ibrahim, S. A. ^{[1
]}

Wang, Tingyu ^{[6
]}

Wen, Jianxiang ^{[6
]}

Gang, Dingpeng ^{[7
]}

Lewis, Elfed ^{[8
]}

Abdul-Rashid, H. A. ^{[1
]}

Bradley, D. A. ^{[3
,4
]}

机构：

[1] Multimedia Univ, Fac Engn, Fibre Opt Res Ctr, Jalan Multimedia, Cyberjaya 63100, Malaysia

[2] Univ Sains Malaysia USM, Adv Med & Dent Inst, Kepala Batas 13200, Penang, Malaysia

[3] Sunway Univ, Ctr Appl Phys & Radiat Technol, Pj 46150, Malaysia

[4] Univ Surrey, Dept Phys, Guildford GU2 7XH, England

[5] Lumisyns Sdn Bhd, Cyberjaya 63100, Selangor, Malaysia

[6] Shanghai Univ, Shanghai Inst Adv Commun & Data Sci, Key Lab Specialty Fibre Opt & Opt Access Networks, Joint Int Res Lab Specialty Fibre Opt & Adv Commun, 99 Shangda Rd, Shanghai 200444, Peoples R China

[7] Univ New South Wales, Sch Elect Engn & Telecommun, Kensington, NSW 2052, Australia

[8] Univ Limerick, Opt Fibre Sensors Res Ctr, Dept Elect & Comp Engn, Limerick, Ireland

来源：

RADIATION PHYSICS AND CHEMISTRY | 2023年 / 204卷

关键词：

Radioluminescence; Time-resolved dosimetry; Optical fibre scintillator; Cerium and terbium co-doped YAG crystal; Scintillator; SILICA OPTICAL-FIBER; X-RAY; ENERGY-TRANSFER; HIGH-EFFICIENCY; DECAY TIME; LUMINESCENCE; PERFORMANCE; EMISSION; RISE;

D O I：

10.1016/j.radphyschem.2022.110625

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Time-resolved radiation dosimetry is an important factor in ensuring dose delivery during radiotherapy is within the prescribed doses for treatment. One method for time-resolved radiation dosimetry is by radioluminescence (RL) measurement technique using doped-silica optical fibre scintillators. The benefits of RL measurement technique include the capability to measure in real-time, high spatial resolution, and greater adaptability. Additionally, time-resolved dosimetry can be achieved by employing suitable scintillators with short rise and decay time. Silica optical fibre scintillators when doped with suitable dopants, provides the temporal resolution required for pulse-by-pulse dosimetry. Yttrium Aluminium Garnet (YAG) crystal optical fiber doped with Cerium and Terbium are discussed as a possible scintillator for time-resolved radiation dosimetry. The Cerium and Terbium co-doped YAG crystal scintillator samples are irradiated under a 6 MV photon beam from a Elekta Synergy (R) LINAC. The irradiation doses ranged from 100 cGy/min to 600 cGy/min. The measurements were made using an RL system with a gating time of 1 mu s. Linear RL response to dose of the irradiated scintillator samples was shown with minimal detectable memory, no afterglow or plateau effects. A rise time of 189.3 ns and a decay time of 260 ns were recorded, indicating promising potential for time-resolved radiation dosimetry.

引用

页数：6

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