Radiation damage studies on new liquid scintillators and liquid-core scintillating fibers

Golovkin, S.V.; Konstantinchenko, A. A.; Kozlov, V.; Kushnirenko, A. E.; Pyshchev, A.I.; Shershukov, V. M.; Vasil’chenko, V.G.; Zimyn, K.V

doi:10.1016/0168-9002(95)00225-1

Cited by 19 publications

(3 citation statements)

References 19 publications

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“…scintillator based on methylnaphthalene with a dye R39 fell by the detection of chemiluminescence of the aqueous core. Furthermore, a miniaturization of LEDs and detectors also opened up new development opportunities of compact and portable systems of chemical analysis using optical fiber with the liquid-core [7][8][9][10][11]. A new solution proposed by authors is to develop the construction of the active microstructural fiber, where the evanescent wave field of the luminescence signal interacts with tested liquid that is in holes of the fiber.…”

Section: Introductionmentioning

confidence: 99%

Active structural waveguide for sensing application

et al. 2014

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In the article a microstructural active optical fiber for sensing application was presented. Construction consists of three hexagonal rings and a core made of SiO 2 -Al 2 O 3 -Sb 2 O 3 glass co-doped with 1Yb 2 O 3 /0.1Tm 2 O 3 [mol%]. Developed optical fiber is characterized by upconversion luminescence (λ p =980nm) at 480nm (Tm 3+ : 1 G 4 → 3 H 6 ) and 650 nm (Tm 3+ : 1 G 4 → 3 F 4 ). Population of thulium levels was attained in result of the Yb 3+ →Tm 3+ upconversion energy transfer. Sensing application of elaborated active photonic structure was presented on the example of aqueous fluorescein solution. Fabricated microstructural optical fiber enables to measure of the fluorescein solutions with the concentration of (0.25 -5.42)·10 -4 [mol%]. Sensitivity of the elaborated measurement setup is 1.51·10 4 [1/mol%].

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Section: Introductionmentioning

confidence: 99%

Active structural waveguide for sensing application

et al. 2014

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“…The diameters of the capillaries can be smaller than for PSFs and can be adapted to obtain the desired resolution. In addition, it has been shown that the liquid filled fibers have potentially higher resistance to radiation damage than PSFs [4]. They can also be fusion-spliced or connected by standard mechanical couplings to conventional multimode fibers, thereby reducing overall optical losses.…”

Section: Introductionmentioning

confidence: 99%

Flexible Liquid-Filled Scintillating Fibers for X-Ray Detection

Lindblom,

Patzauer,

Vogt

et al. 2023

2023 Ieee Sensors

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“…In order to improve damage resistance, previous studies have examined glass capillary tubes filled with liquid organic scintillator. 4,5) Such tubes are not flexible, and cannot be used in complex facilities or tight and narrow spaces. As flexible fibers being sensitive to radiations, a liquid light guide was tested to measure radiation distributions using a 60 Co gamma ray source.…”

Section: Introductionmentioning

confidence: 99%

Position-Sensitive Radiation Detector with Flexible Light Guide and Liquid Organic Scintillator to Monitor Distributions of Radioactive Isotopes

Hayashi

Kawarabayashi

Asai

et al. 2008

Journal of Nuclear Science and Technology

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Position-sensitive detectors consisting of optical fibers such as scintillating fibers, normal optical plastic fibers, and liquid light guides have been developed as radiation sensors to monitor long-range distributions of radioactive isotopes. Because of losses of optical transmission due to radiation damage in high-level radiation environments, however, both scintillating fibers and normal optical plastic fibers are less applicable to areas of high dose rate. In order to develop a flexible fiber-type radiation sensor with good radiation hardness, we propose to use a liquid light guide, the core of which is replaced by a liquid organic scintillator. A liquid light guide consists of flexible cladding material, and can be easily bent. A liquid organic scintillator can generate a much larger number of photons than the original liquid material, leading to a better detection efficiency than a simple liquid light guide; furthermore, it is not significantly damaged by incident radiation. In preliminary experiments using a fast neutron beam, we confirmed that our prototype system can be operated as a position-sensitive radiation detector. Fundamental characteristics such as spatial resolution, detection efficiency and attenuation length of light propagation were examined with two detectors of 2 m and 10 m length. Optical transmission losses due to radiation damage were examined using 60 Co gamma rays; no significant transmission loss was observed up to a dose of 1:5 Â 10 4 Gy.

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Radiation damage studies on new liquid scintillators and liquid-core scintillating fibers

Cited by 19 publications

References 19 publications

Active structural waveguide for sensing application

Active structural waveguide for sensing application

Flexible Liquid-Filled Scintillating Fibers for X-Ray Detection

Position-Sensitive Radiation Detector with Flexible Light Guide and Liquid Organic Scintillator to Monitor Distributions of Radioactive Isotopes

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