Performance measurement of the scintillator with optical fiber detector for boron neutron capture therapy

被引：7
|
作者：
Komeda, M. [1 ]
Kumada, H. [1 ]
Ishikawa, M. [2 ]
Nakamura, T. [1 ]
Yamamoto, K. [1 ]
Matsumura, A. [3 ]
机构：
[1] Japan Atom Energy Agcy, Dept Res Reactor & Tandem Accelerator, Tokai, Ibaraki, Japan
[2] Hokkaido Univ Hosp, Dept Med Phys, Sapporo, Hokkaido, Japan
[3] Univ Tsukuba, Dept Neurosurg, Tsukuba, Ibaraki 305, Japan
来源：
APPLIED RADIATION AND ISOTOPES | 2009年 / 67卷 / 7-8期
关键词：
SOF; Irradiation damage; Deterioration; Plastic scintillator; BNCT;
D O I：
10.1016/j.apradiso.2009.03.083
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The thermal neutron flux can be easily measured in real time by using the scintillator with optical fiber (SOF) detector. However the irradiation damage under high-intensity neutron flux causes deterioration of the SOF detector due to radiation damage to the plastic scintillator in which (6)LiF is blended. After irradiating the SOF detector for 4 h (thermal neutron fluence is approximately 2.0 x 10(13) neutrons/cm(2)), the sensitivity of the SOF detector decreased by 3.0%. After irradiating the SOF detector for 2 months (thermal neutron fluence approximately 6.4 x 10(14) neutrons/cm(2)), the sensitivity was reduced to 42% of baseline. Supposing that the thermal neutron fluence is 2 x 10(12) neutrons/cm(2) on the surface of a patient in a BNCT treatment, the sensitivity of the SOF detector is reduced by approximately 0.3%. This report presents investigations on the deterioration of the SOF detector in irradiation experiments. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码：S254 / S257
页数：4
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