Light propagation and fluorescence quantum yields in liquid scintillators

Buck, C.; Gramlich, B.; Wagner, S. J.

doi:10.1088/1748-0221/10/09/p09007

Cited by 30 publications

(49 citation statements)

References 18 publications

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“…Investigating the effect of single LS components on the light yield (see Table 3) we find that the addition of few percent DIN increases the light yield substantially for the Gd-loaded LS while leaving the light yield of the unloaded LS unchanged. This could be explained by the light absorption spectrum of DIN around 280 nm [5]. Together with PPO, it concurs for absorption with the quenching molecule Gd(thd) 3 .…”

Section: Light Yieldssupporting

confidence: 57%

Production and properties of the liquid scintillators used in the STEREO reactor neutrino experiment

et al. 2019

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The electron antineutrino spectrum in the S reactor experiment (ILL Grenoble) is measured via the inverse beta decay signals in an organic liquid scintillator. The six target cells of the S detector are filled with about 1800 litres of Gd-loaded liquid scintillator optimised for the requirements of the experiment. These target cells are surrounded by similar cells containing liquid scintillator without the Gd-loading. The development and characteristics of these scintillators are reported. In particular, the transparency, light production and pulse shape discrimination capabilities of the organic liquids are discussed.

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Section: Light Yieldssupporting

confidence: 57%

Production and properties of the liquid scintillators used in the STEREO reactor neutrino experiment

et al. 2019

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“…Since energy deposited in the PC can both radiatively and non-radiatively transfer to the PPO, which has a quantum yield of 84% [14], only a small concentration is needed for the cocktail's emission spectrum to shift to longer wavelengths. This shift increases the attenuation length of light in the scintillator.…”

mentioning

confidence: 99%

Results from the first use of low radioactivity argon in a dark matter search

Agnes¹,

Agostino²,

Albuquerque³

et al. 2016

Phys. Rev. D

184

239

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A b s tra c t: Nuclear recoil events produced by neutron scatters form one of the most important classes of background in WIMP direct detection experiments, as they may produce nuclear recoils that look exactly like W IMP interactions. In DarkSide-50, we both actively suppress and measure the rate of neutron-induced background events using our neutron veto, composed of a boron-loaded liquid scintillator detector within a water Cherenkov detector. This paper is devoted to the description of the neutron veto system of DarkSide-50, including the detector structure, the fundamentals of event reconstruction and data analysis, and basic performance parameters.

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“…The bis-MSB measurement with cyclohexane as a solvent in Ref. [26] is about 10% lower than that with LAB in Ref. [14,16].…”

Section: Fluorescence Quantum Yield Of Fluorsmentioning

confidence: 72%

A complete optical model for liquid-scintillator detectors

Zhang

et al. 2020

Nuclear Instruments and Methods in Physics Research Section A:

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Liquid scintillator (LS) is widely used in various neutrino oscillation experiments, in particular, the reactor neutrino experiments. The complex absorption and re-emission processes of optical photons are known to be an important source of the non-linear and non-uniform response of LS detectors. Precise simulation of light propagation in LS is highly desirable to model the detector response and reduce the systematic errors. In this paper, we develop a novel optical model which can completely deal with the competitive photon absorption and subsequent re-emission processes of the LS components. It allows to directly plug in the laboratory measurements of the LS components to model any LS composition. Extensive measurements have been performed to obtain the essential optical parameters for this model. We validate the model with a bench-top experiment featuring a small LS volume. Furthermore, we demonstrate that for any given detector geometry, this model provides the capability of optimizing the LS recipe to maximize the light collection. It is valuable for designing future LS-based detectors and improving the agreement between Monte Carlo and data for current neutrino experiments.

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Light propagation and fluorescence quantum yields in liquid scintillators

Cited by 30 publications

References 18 publications

Production and properties of the liquid scintillators used in the STEREO reactor neutrino experiment

Production and properties of the liquid scintillators used in the STEREO reactor neutrino experiment

Results from the first use of low radioactivity argon in a dark matter search

A complete optical model for liquid-scintillator detectors

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