The Fiber Optic Dosimeter on the Navigational Technology Satellite 2

Evans, Bruce D.; Sigel, George H.; Langworthy, J.B.; Faraday, B. J.

doi:10.1109/tns.1978.4329582

Cited by 28 publications

(9 citation statements)

References 1 publication

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“…This technique has been successfully demonstrated in a satellite in space since 1978. [ 123 ] This method is easy to implement and the sensitivity of dose rate can be easily tailored to different applications with fiber doping and fiber length. Toccafondo et al.…”

Section: Applicationsmentioning

confidence: 99%

Fabrication and Application of Single Crystal Fiber: Review and Prospective

Liu

Ohodnicki

2021

Adv Materials Technologies

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The state of the art of single crystal fiber (SCF) fabrication has evolved and improved over the last five decades. Nowadays, edge‐defined film‐feed growth, micro‐pulling down, and laser heated pedestal growth are three major techniques for the fabrication of SCF. Solid state crystal growth and temperature gradient technology are also very active recently making small size SCF. These optical fiber growth techniques are powerful material research tools employed globally for both scientific inquiry and practical applications. This article introduces the development of SCF growth techniques, with particular emphasis on recent practical applications including temperature sensing, radiation environment sensing, fiber laser and power delivery, chemical and medical application, imaging application, and piezoelectric application. In all cases, the application‐oriented point of view provides the reader with an up‐to‐date panorama of the vast possibilities offered by SCF. In the end, perspectives on the trends and future development of single crystal fibers are discussed.

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Section: Applicationsmentioning

confidence: 99%

Fabrication and Application of Single Crystal Fiber: Review and Prospective

Liu

Ohodnicki

2021

Adv Materials Technologies

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“…The implementation of an RIA based fiber optic dosimeter system can be found in the Navigational Technology Satellite 2 (NTS-2), launched in 1977 [132]. The setup consisted of a GaAs LED emitting at ∼900nm and detected by a silicon PIN photodiode.…”

Section: Space Dosimetrymentioning

confidence: 99%

Recent Advances in Silica Glass Optical Fiber for Dosimetry Applications

et al. 2020

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In this paper, we review the highly promising silica glass, fabricated as doped and undoped optical fiber for intended use in radiation dosimetry. The dosimetry techniques reviewed here, underpinned by intrinsic and extrinsic defects in silica glass, focus on Thermoluminescence (TL), Optically Stimulated Luminescence (OSL) and Radioluminescence (RL), with occasional references to the much more established Radiation Induced Attenuation (RIA). The other focus in this review is on the various materials that have been reported earlier as dopants and modifiers used in silica glass optical fiber radiation dosimeters. This article also elaborates on recently reported optical fiber structures, namely, cylindrical fibers, photonic crystal fibers and flat fibers, as well as dimensions and shapes used for optimization of dosimeter performance. The various types of optical fiber radiation dosimeters are subsequently reviewed for various applications ranging from medical dosimetry such as in external beam radiotherapy, brachytherapy and diagnostic imaging, as well as in industrial processing and space dosimetry covering a dynamic dose range from μGy to kGy. Investigated dosimetric characteristics include reproducibility, fading, dose response, reciprocity between luminescence yield to dose-rate and energy dependence. The review is completed by a brief discussion on limitations and future developments in optical fiber radiation dosimetry.

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“…One of the first RIA systems was embedded on the NTS-2 satellite to measure dose rate variations of 0.09 to 0.25 Gy day À1 within the outer Van Allen belt (see Sect. 2.4), correlated with sunspots activity [50]. RIA dosimetry was then developed in high-energy physics and nuclear applications, as well as in medical physics for the online dose monitoring during radiation treatments (with a 2% accuracy on a total measured dose of about 1 Gy).…”

Section: Radiation-induced Attenuation (Ria)mentioning

confidence: 99%

State of the art on nuclear heating measurement methods and expected improvements in zero power research reactors

Guillou

Gruel

Destouches

et al. 2017

EPJ Nuclear Sci. Technol.

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Abstract. The paper focuses on the recent methodological advances suitable for nuclear heating measurements in zero power research reactors. This bibliographical work is part of an experimental approach currently in progress at CEA Cadarache, aiming at optimizing photon heating measurements in low-power research reactors. It provides an overview of the application fields of the most widely used detectors, namely thermoluminescent dosimeters (TLDs) and optically stimulated luminescent dosimeters. Starting from the methodology currently implemented at CEA, the expected improvements relate to the experimental determination of the neutron component, which is a key point conditioning the accuracy of photon heating measurements in mixed n-g field. A recently developed methodology based on the use of 7 Li and 6 Li-enriched TLDs, precalibrated both in photon and neutron fields, is a promising approach to deconvolute the two components of nuclear heating. We also investigate the different methods of optical fiber dosimetry, with a view to assess the feasibility of online photon heating measurements, whose primary benefit is to overcome constraints related to the withdrawal of dosimeters from the reactor immediately after irradiation. Moreover, a fibered setup could allow measuring the instantaneous dose rate during irradiation, as well as the delayed photon dose after reactor shutdown. Some insights from potential further developments are given. Obviously, any improvement of the technique has to lead to a measurement uncertainty at least equal to that of the currently used methodology (∼5% at 1s).

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The Fiber Optic Dosimeter on the Navigational Technology Satellite 2

Cited by 28 publications

References 1 publication

Fabrication and Application of Single Crystal Fiber: Review and Prospective

Fabrication and Application of Single Crystal Fiber: Review and Prospective

Recent Advances in Silica Glass Optical Fiber for Dosimetry Applications

State of the art on nuclear heating measurement methods and expected improvements in zero power research reactors

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