Scintillators Based on Ytterbium Chloride Adducts with Neutral Organophosphorus Extractants for Detecting Solar Neutrino for LENS (Low-Energy Neutrino Spectroscopy) Experiment |
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| Authors: | N A Danilov Yu S Krylov G V Korpusov G V Kostikova I R Barabanov L B Bezrukov V N Kornoukhov N P Nesterova E A Yanovich V V Yakshin N A Tsarenko C Cattadori N Ferrari A Falgiani |
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| Affiliation: | (1) Institute of Physical Chemistry, Russian Academy of Sciences, Moscow, Russia;(2) Institute of Physical Chemistry, Russian Academy of Sciences, Moscow, Russia;(3) Russian Research Institute of Chemical Technology, Moscow, Russia;(4) National Laboratory Grand Sasso, National Institute of Nuclear Physics, Italy |
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| Abstract: | The main features of extraction of ytterbium chloride with dibutyl butylphosphonate (DBBP) and triisoamylphosphine oxide (TIAPO) were studied. The effects of temperature, DBBP and TIAPO concentrations in 1,2,4-trimethylbenzene (TMB), and concentrations of salting-out agents LiCl and NH4Cl and mineral acid (HCl) on the ytterbium distribution coefficient were determined. The isotherms of extraction of HCl and YbCl3 with 50% DBBP and TIAPO in TMB were obtained. The composition of the extractable complexes of ytterbium chloride with DBBP and TIAPO (S), YbCl3·3S, was determined by saturation and dilution methods. The saturation of 50% solutions of DBBP and TIAPO in TMB with ytterbium chloride was modeled. Two samples of scintillators with ytterbium concentration of 90 g l-
1 were prepared, and their physical parameters were measured. The stability of sample properties was tested for 18 months. |
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