An experimental and theoretical study of the influence of Cerenkov radiation on optical fiber X-ray sensors

被引：1

作者：

Li, Haopeng ^{[1
]}

Xie, Tianci ^{[1
]}

Qian, Jinqian ^{[1
]}

Shi, Qieming ^{[1
]}

Zhang, Bin ^{[1
]}

He, Bo ^{[1
]}

Dai, Xinyu ^{[1
]}

Zhao, Wenhui ^{[1
]}

Li, Song ^{[1
]}

Qin, Zhuang ^{[2
]}

Xu, Jun ^{[3
]}

Feng, Kun ^{[4
]}

Lewis, Elfed ^{[5
]}

Sun, Weimin ^{[1
]}

机构：

[1] Harbin Engn Univ, Key Lab In Fiber Integrated Opt, Minist Educ China, Harbin 150001, Peoples R China

[2] Heilongjiang Univ, Heilongjiang Prov Key Lab Metamat Phys & Device, Harbin 150080, Peoples R China

[3] Harbin Med Univ, Comprehens Canc Ctr, Affiliated Hosp 2, Harbin 150001, Peoples R China

[4] Shanghai Ninth Peoples Hosp, Dept Oral & Maxillofacial Head Neck Oncol, Shanghai 200011, Peoples R China

[5] Univ Limerick, Opt Fiber Sensors Res Ctr, Limerick, Ireland

来源：

MEASUREMENT | 2021年 / 171卷 / 171期

基金：

中国国家自然科学基金;

关键词：

Optical fiber sensors; X-ray detection; Cerenkov radiation; Recoil electrons; Percentage depth dose (PDD);

D O I：

10.1016/j.measurement.2020.108863

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The use of optical fiber X-ray sensors is of great significance in X-ray detection. To reduce the influence of background noise attributed to sources such as Cerenkov radiation, the response of a plain (no scintillator material added) optical fiber to the X-ray radiation is investigated. The percentage dose-depth (PDD) of plain optical fibers with and without visible light blocking end caps are calculated and are clearly different. The leakage of Cerenkov radiation and presence of Compton scattering from water into the sensing probe is considered as the reason for the difference. A theoretical model to explain the difference is proposed. The experimental results fit well to the theoretical expectation.

引用

页数：8

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