Study of the influence of the LS-cocktail composition for the standardisation of radionuclides using the TDCR model

Broda, R.; Małetka, K.; Terlikowska, T.; Cassette, P.

doi:10.1016/s0969-8043(01)00202-0

Cited by 24 publications

(9 citation statements)

References 5 publications

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“…The light yield of the LS sample is consistent with the typically measured value of the light yield of a liquid scintillator of ≈ 10 4 photons/MeV. The quenching parameter for the LS sample falls in the lower range of the typically measured values of 0.07-0.2 mm/MeV [11,12,13,14]. The light yield values for the WbLS samples do not linearly scale with the fraction of scintillator, likely due to differences in fluor concentration and solvent type.…”

Section: Detector Bsupporting

confidence: 78%

Characterization and modeling of a Water-based Liquid Scintillator

et al. 2015

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We have characterised Water-based Liquid Scintillator (WbLS) using low energy protons, UV-VIS absorbance, and fluorescence spectroscopy. We have also developed and validated a simulation model that describes the behaviour of WbLS in our detector configurations for proton beam energies of 210 MeV, 475 MeV, and 2 GeV and for two WbLS compositions. Our results have enabled us to estimate the light yield and ionisation quenching of WbLS, as well as to understand the influence of the wavelength shifting of Cherenkov light on our measurements. These results are relevant to the suitability of WbLS materials for next generation intensity frontier experiments.

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Section: Detector Bsupporting

confidence: 78%

Characterization and modeling of a Water-based Liquid Scintillator

et al. 2015

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“…The lowest slope in the residual plot shown in Fig. 5 is obtained using k B = 0.0110 cm/MeV, as proposed by Broda et al [35]. Indications of a similar k B value were also found by Kossert [35] when analyzing experimental data of the β-emitter 87 Rb.…”

Section: Liquid Scintillation Counting Measurementssupporting

confidence: 79%

Activity standardization of 41Ca by means of liquid scintillation counting

Kossert¹,

Jörg

Gostomski

2009

Radiochimica Acta

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Liquid scintillation counting according to the CIEMAT/NIST method was used for the activity standardization of 41 Ca. The counting efficiencies were computed with two different atomic rearrangement models (KLM and KL 1 L 2 L 3 M) applying an improved model for the interaction of low-energy X-rays with the scintillation cocktail. This report comprises a detailed description of the determination of nuclear and atomic input data, sample preparation as well as a comprehensive uncertainty analysis.

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“…Tables III and IV list the kB values and uncertainties for all the samples with different [S 2 ]. It can be seen that kB falls in a range of 11.6 − 13.4 mg/cm 2 /MeV, which is slightly larger than the range (8.1 − 12.0 mg/cm 2 /MeV) reported in the literatures for various organic scintillators [29], [41], [46]. This discrepancy may be due to the dynamic quenching, as discussed in Section IV-D.…”

Section: Birks Factor (Kb)mentioning

confidence: 61%

Enhancement Effect of Fused Double Benzene-Ring Structure on the Light Output of Carborane-Loaded Toluene- and Pseudocumene-Based Scintillators

Chang

Okoye

Urffer

et al. 2016

IEEE Trans. Nucl. Sci.

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Four sample groups were prepared by adding different concentrations of naphthalene (NP) or of 2,6-diisopropylnaphthalene (DIN) as a secondary solvent (S2) in carborane-loaded toluene (TL)-and pseudocumene (PC)-based scintillators. The pulse-height spectra of the samples in response to 137 Cs γ-rays and to thermal neutrons were collected to study the light output (L) enhancement effect of S2. It is found that for all sample groups, L increases to a plateau with the concentration of secondary solvent ([S2]). As [S2] is increased from 0 to saturation concentration, L increases by 31-45% and 34-53% in response to 137 Cs γ-rays and to thermal neurons, respectively. A first-order approximation model is proposed to fit to the experimental data. The enhancement factor (kh) and maximum L of each sample group are obtained from curve fitting. The Birks factor (kB) and electron equivalent energy (keVee) of each sample are calculated by a numerical method based on Birks formula. The L enhancement is discussed according to the percent changes of these parameters. In conclusion, the enhancement effect is attributed mainly to the fused double benzene-ring structure of NP and DIN, which has more delocalized electrons, and provides faster Förster resonance energy transfer paths than the single benzene-ring structure of TL and PC. Adding NP or DIN leads to a significant increase in absolute scintillation efficiency (S) and a slight decrease in kB for both scintillators. It is believed that DIN has slightly larger enhancement effect than NP. A so-called "dynamic quenching" is confirmed to exist in the scintillation process based on the kh values in response to 137 Cs γ-rays and to thermal neutrons.

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Study of the influence of the LS-cocktail composition for the standardisation of radionuclides using the TDCR model

Cited by 24 publications

References 5 publications

Characterization and modeling of a Water-based Liquid Scintillator

Characterization and modeling of a Water-based Liquid Scintillator

Activity standardization of 41Ca by means of liquid scintillation counting

Enhancement Effect of Fused Double Benzene-Ring Structure on the Light Output of Carborane-Loaded Toluene- and Pseudocumene-Based Scintillators

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