Published 2003 | Version v1
Journal article Metadata-only

Scintillators based on ytterbium chloride adducts with neutral organophosphorus extractants for detecting solar neutrino for LENS (low-energy neutrino spectroscopy) experiment

Creators

  • 1. RAN, Inst. Fizicheskoj Khimii, Moscow (Russian Federation)
  • 2. RAN, Inst. Yadernykh Issledovanij, Moscow (Russian Federation)
  • 3. VNII Khimicheskoj Tekhnologii, Moscow (Russian Federation)

Description

Main features of ytterbium chloride extraction by dibutyl butylphosphonate (DBBP) and triisoamylphosphine oxide (TIAPO) were studied. 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 ytterbium distribution coefficient were determined. Isotherms of HCl and YbCl3 extraction with 50 % DBBP and TIAPO in TMB were obtained. Composition of extractable complexes of ytterbium chloride with DBBP and TIAPO (S), YbCl3·3S was determined by saturation and dilution methods. Saturation of 50 % solutions of DBBP and TIAPO in TMB with ytterbium chloride was modeled. Two samples of scintillators with ytterbium concentration 90 g/l were prepared and their physical parameters were measured. Stability of the sample properties was tested for 18 months

Abstract (Russian)

Изучены основные закономерности экстракции хлорида иттербия дибутилбутилфосфонатом (ДББФ) и триизоамилфосфиноксидом (ТИАФО). Исследовано влияние температуры, концентрации ДББФ и ТИАФО в триметилбензоле (ТМБ), концентрации высаливателей LiCl и NH4Cl и минеральной кислоты (HCl) на коэффициент распределения иттербия. Получены изотермы экстракции HCl и YbCl3 50 % ДББФ и ТИАФО в ТМБ. Методами насыщения и разбавления определены составы экстрагируемых комплексов ДББФ и ТИАФО (S) с хлоридом иттербия - YbCl3·3S. Проведено моделирование процесса насыщения 50 % ДББФ и ТИАФО в ТМБ хлоридом иттербия. Получены два образца сцинтилляторов с концентрацией 90 г/л иттербия. Определены физические параметры полученных образцов сцинтилляторов. Испытана устойчивость свойств полученных образцов в течение 18 месяцев

Additional details

Additional titles

Original title (Russian)
Сцинтилляторы для детектирования солнечного нейтрино на основе соединений хлорида иттербия с нейтральными фосфорорганическими экстрагентами (для эксперимента LENS - спектроскопия низкоэнергетических нейтрино)

Publishing Information

Journal Title
Radiokhimiya
Journal Volume
45
Journal Issue
2
Journal Page Range
p. 128-133
ISSN
0033-8311
CODEN
RADKAU

INIS

Country of Publication
Russian Federation
Country of Input or Organization
Russian Federation
INIS RN
36055177
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY;
Descriptors DEI
CHLORIDES; CONCENTRATION RATIO; COORDINATION VALENCES; DISTRIBUTION FUNCTIONS; LIQUID SCINTILLATION DETECTORS; LIQUID SCINTILLATORS; OPTICAL PROPERTIES; PHOSPHINE OXIDES; PHOSPHONIC ACID ESTERS; SALTING-OUT AGENTS; SOLAR NEUTRINOS; SOLVENT EXTRACTION; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0273-0400 K; YTTERBIUM COMPLEXES
Descriptors DEC
CHLORINE COMPOUNDS; COMPLEXES; ELEMENTARY PARTICLES; ESTERS; EXTRACTION; FERMIONS; FUNCTIONS; HALIDES; HALOGEN COMPOUNDS; LEPTONS; MASSLESS PARTICLES; MEASURING INSTRUMENTS; NEUTRINOS; ORGANIC COMPOUNDS; ORGANIC PHOSPHORUS COMPOUNDS; OXYGEN COMPOUNDS; PHOSPHINES; PHOSPHORS; PHOSPHORUS COMPOUNDS; PHYSICAL PROPERTIES; RADIATION DETECTORS; RADIATIONS; RARE EARTH COMPLEXES; SCINTILLATION COUNTERS; SEPARATION PROCESSES; SOLAR PARTICLES; SOLAR RADIATION; STELLAR RADIATION; TEMPERATURE RANGE; VALENCE

Optional Information

Notes
6 refs.; 6 tabs.; 6 figs.