Inhibition of contamination in cesium iodide

Kim, Y.D.; Hahn, I. S.; Hwang, Mun Kyung; Li, J.; Kang, W. G.; Kim, H.J.; Kim, S.C.; Kim, S.K.; Kim, S.Y.; Kim, T.Y.; Kwak, Jungwon; Kwon, Y.; Lee, E.K.; Lee, H.S.; Lee, J.I.; Lee, J.Y.; Lee, Mi Jung; Myung, S. S.; Park, H.; Schiedt, Alexander; Yang, H.Y.; Zhu, J.

doi:10.1016/j.nima.2005.06.080

Cited by 19 publications

(8 citation statements)

References 14 publications

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“…Ultra-low background HP Ge γ detectors can be used to measure radioactive contamination of scintillation crystals and materials for their production (see, for instance [185,186,191,192,193,194,195,196,197,198,187,188,189,190]). This method provides typical sensitivity at the level of mBq/kg for 40 K, 137 Cs, 228 Th, 226 Ra and 227 Ac (daughter of 235 U), and somewhat lower sensitivity to other U/Th daughters.…”

Section: Low Background Measurementsmentioning

confidence: 99%

Radioactive contamination of scintillators

Danevich

Tretyak

2018

Int. J. Mod. Phys. A

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Low counting experiments (search for double β decay and dark matter particles, measurements of neutrino fluxes from different sources, search for hypothetical nuclear and subnuclear processes, low background α, β, γ spectrometry) require extremely low background of a detector. Scintillators are widely used to search for rare events both as conventional scintillation detectors and as cryogenic scintillating bolometers. Radioactive contamination of a scintillation material plays a key role to reach low level of background. Origin and nature of radioactive contamination of scintillators, experimental methods and results are reviewed. A programme to develop radiopure crystal scintillators for low counting experiments is discussed briefly.

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Section: Low Background Measurementsmentioning

confidence: 99%

Radioactive contamination of scintillators

Danevich

Tretyak

2018

Int. J. Mod. Phys. A

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“…[22], this degree of improvement is achievable through the application of additional shielding and well-understood techniques to reduce the dominant internal radiocontaminations of CsI [33] (see also Refs. [34][35][36]). We also include in our analysis an overall systematic uncertainty of ±28% on the overall signal rate, corresponding to uncertainties associated with the cross section, detector efficiency, and overall neutrino flux.…”

Section: Projected Sensitivity To Sterile Neutrinosmentioning

confidence: 99%

Constraining sterile neutrino interpretations of the LSND and MiniBooNE anomalies with coherent neutrino scattering experiments

Blanco

Machado

2020

Phys. Rev. D

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Results from the LSND and MiniBooNE experiments have been interpreted as evidence for a sterile neutrino with a mass near the electronvolt scale. Here we propose to test such a scenario by measuring the coherent elastic scattering rate of neutrinos from a pulsed spallation source. Coherent scattering is universal across all active neutrino flavors, and thus can provide a measurement of the total Standard Model neutrino flux. By performing measurements over different baselines and making use of timing information, it is possible to significantly reduce the systematic uncertainties and to independently measure the fluxes of neutrinos that originate as νµ or as either νe orνµ. We find that a 100 kg CsI detector would be sensitive to the large fraction of the sterile neutrino parameter space that could potentially account for the LSND and MiniBooNE anomalies.

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“…137 Cs is one of the dominant internal background sources in CsI(Tl) crystals and it is produced artificially as fission waste from power reactors and atomic weapon tests. 137 Cs can be easily introduced during the processing from cesium ore, such as the water used for Cs extraction might be the main source for 137 Cs contamination [16]. 137 Cs is a beta decay via 137 Cs → 137 Ba * + υ e + e − (t 1/2 = 30.1 y)…”

Section: Intrinsic Radiopurity Of 137 Csmentioning

confidence: 99%

Measurement of intrinsic radioactive backgrounds from the ¹³⁷ Cs and U/Th chains in CsI(Tl) crystals

et al. 2015

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The inorganic CsI(Tl) crystal scintillator is a candidate served as an anti-compton detector for China Dark matter EXperiment (CDEX). Studying the intrinsic radiopurity of CsI(Tl) crystal is an issue of major importance. The timing, energy and spatial correlations, as well as the capability of pulse shape discrimination provide powerful methods for the measurement of intrinsic radiopurities. The experimental design, detector performance and event-selection algorithms are described. A total of 359 × 3 kg-days data from three prototypes of CsI(Tl) crystals were taken at China Jinping underground laboratory where offers a good shielding environment. The contamination levels of internal isotopes from 137 Cs, 232 Th and 238 U series, as well as the upper bounds of 235 U series are reported. Identification of the whole α peaks from U/Th decay chains and derivation of those corresponding quenching factors are achieved.

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Inhibition of contamination in cesium iodide

Cited by 19 publications

References 14 publications

Radioactive contamination of scintillators

Radioactive contamination of scintillators

Constraining sterile neutrino interpretations of the LSND and MiniBooNE anomalies with coherent neutrino scattering experiments

Measurement of intrinsic radioactive backgrounds from the ¹³⁷ Cs and U/Th chains in CsI(Tl) crystals

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Inhibition of contamination in cesium iodide

Cited by 19 publications

References 14 publications

Radioactive contamination of scintillators

Radioactive contamination of scintillators

Constraining sterile neutrino interpretations of the LSND and MiniBooNE anomalies with coherent neutrino scattering experiments

Measurement of intrinsic radioactive backgrounds from the 137 Cs and U/Th chains in CsI(Tl) crystals

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Product

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Measurement of intrinsic radioactive backgrounds from the ¹³⁷ Cs and U/Th chains in CsI(Tl) crystals