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

被引：6

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

页码：S254 / S257

页数：4

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