Results 241 to 250 of about 5,305 (281)

Radiation Dosimeter Using an Extrinsic Fiber Optic Sensor

IEEE Sensors Journal, 2014
A novel extrinsic optical fiber X-ray dosimeter for biomedical applications is presented in this paper. The primary focus of the sensor is to measure low doses of ionizing X-ray radiation. The material in the sensor tip scintillates upon exposure to radiation and the resultant low level scintillating light is coupled to a polymethylmethacrylate plastic
Elfed Lewis, Adelina Sporea, Ion Tiseanu   +2 more
exaly   +2 more sources

Fiber-optic radiation sensor for detection of tritium

Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2011
Abstract The objective of this study is to develop the radiation sensor, which is composed of a scintillator, an optical fiber bundle and a light measuring device to detect the tritium in real-time. In this study, we have fabricated fiber-optic radiation sensors using inorganic scintillators and plastic optical fiber bundles.
K.W. Jang, D.H. Cho, W.J. Yoo, J.K. Seo, J.Y. Heo, J.-Y. Park, B. Lee   +6 more
exaly   +2 more sources

Fiber optic sensors for radiation dosimetry

SPIE Proceedings, 1994
Fiberoptic sensors are employed for the measurement of many physical quantities. 1,2 Fiberoptic sensors using glass or lead glass optical fibers have been shown in radiation detectors3,4 or dosimeters.5,6 It has been shown7-9 that the main effect of the interaction of ionizing radiation (typically, ? -rays from a Co60 source) with optical fibers is the
Luciano DiFiore, Aniello Grado, Paolo Russo   +2 more
openaire   +1 more source

An innovative extrinsic fiber optic sensor for real-time radiation monitoring

Optical Fiber Sensors Conference 2020 Special Edition, 2021
Radiochromic film dosimetry is a well-established technique particularly suitable for off-line dose measurements. We propose an innovative method for the determination of the dose in real-time with radiochromic films based on optoelectronic instrumentation.
Fienga F., Casolaro P., Vaiano P., Di Capua F., Campajola L., Breglio G., Cutolo A., Consales M., Buontempo S., Cusano A.   +9 more
openaire   +2 more sources

Novel fiber optic nuclear radiation sensor

SPIE Proceedings, 1997
The principle andstructure of a novel fiber optic nuclear radiation sensor (mainly measuthig gamma ray) based on the principle of radiation-induced loss are presented in this paper. Its great advantages over conventional nuclear radiation sensors are discussed as well.
Dexing Sun, Song Qiu, Yanbiao Liao, Shurong Lai, Zongmao Wang, Xin Qiao   +5 more
openaire   +1 more source

Feasibility of fiber-optic radiation sensor using Cerenkov effect for detecting thermal neutrons

Optics Express, 2013
In this research, we propose a novel method for detecting thermal neutrons with a fiber-optic radiation sensor using the Cerenkov effect. We fabricate a fiber-optic radiation sensor that detects thermal neutrons with a Gd-foil, a rutile crystal, and a plastic optical fiber. The relationship between the fluxes of electrons inducing Cerenkov radiation in
Kyoung Won Jang, Takahiro Yagi, Cheol Ho Pyeon   +2 more
exaly   +3 more sources

Understanding the Radiation Effects on Fiber Optic Sensors

2022
In this dissertation, the effects of radiation (gamma, neutron or mixed gamma and neutron) on optical fiber sensors are studied and new techniques for real-time measurement of radiation-induced macroscopic changes in optical fibers are presented. It is crucial among the research and development efforts in the nuclear energy field to conduct experiments
openaire   +1 more source

Fiber-optic temperature sensor based on internally generated thermal radiation

Applied Optics, 1981
This paper presents a theoretical and experimental study of a method of sensing temperature with optical fibers with the radiation thermally generated within the fiber. Using quartz fibers it is possible to read temperatures in the range from room temperature to over 1000 degrees C.
M, Gottlieb, G B, Brandt
openaire   +2 more sources

A fiber-optic twin sensor for dose measurements in radiation therapy

Optical Review, 1996
The developed fiber-optic twin sensor allowsin- vivo dose measurement in the tissue of the patient’s body. It consists of two radiation-sensitive fibers. The radiation-induced attenuations of these fibers are used to determine the dose absorbed in tissue.
Harald Bueker, Friedrich Wolfgang Haesing, Frank Pfeiffer, Hermann-Joseph Schmitz   +3 more
openaire   +1 more source

Neutron radiation effects on Fabry–Perot fiber optic sensors

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2003
Abstract Nuclear Power Plant operators and Generation IV plant designers are considering advanced data transmission and measurement systems to improve system economics and safety, while concurrently addressing the issue of obsolescence of instrumentation and control systems.
Hanying Liu, Joseph Talnagi, Don W. Miller   +2 more
openaire   +1 more source