Results 121 to 130 of about 260 (165)

Entropy and the mechanism of phase transitions in elpasolites

Physics of the Solid State, 2001
The phase transitions in series of crystals with the general formulas A2BB’X6 (X=F, Cl, Br, or CN) and Pb2BB’O6 that belong to the elpasolite family (space group $$Fm\bar 3m$$ ) are analyzed.
I. N. Flerov, M. V. Gorev
openaire   +1 more source

Scintillation properties of some Ce doped chloride elpasolites

Journal of Luminescence, 1997
H U Gudel, C W E van Eijk
exaly   +2 more sources

Cooperative processes in Cs2NaYbF6 elpasolite crystals

Journal of Luminescence, 2014
Abstract Spectroscopic and luminescent properties of Yb3+-doped Cs2NaYF6 and stoichiometric Cs2NaYbF6 crystals are studied in the infrared and visible spectral regions. The stoichiometric Cs2NaYbF6 compound demonstrates a visible emission when excited by the laser radiation with the wavelength of about 1 μm.
D.S. Pytalev, A. Jaffres, P. Aschehoug, P.A. Ryabochkina, A.V. Malov, N.M. Khaidukov, M.N. Popova   +6 more
openaire   +1 more source

Thermodynamic properties of (NH4)2KGaF6 elpasolite

Physics of the Solid State, 2001
The heat capacity of (NH4)2KGaF6 elpasolite is measured in the temperature range from 80 to 350 K. A sequence of three phase transitions at T 1=288.5 K, T 2=250 K, and T 3=244.5 K is revealed, and the thermodynamic characteristics of these transitions are determined.
I. N. Flerov, M. V. Gorev, M. L. Afanas’ev, T. V. Ushakova   +3 more
openaire   +1 more source

Quaternary Chlorides and Bromides of the Rare Earth Elements: Elpasolites

Inorganic Syntheses, 2007
Gerd Meyer
exaly   +2 more sources

Crystal structure of Rb-elpasolite Rb2NaAlF6

Crystallography Reports, 2013
Single crystals of Rb2NaAlF6, the Rb analogue of the mineral elpasolite, are obtained in the NaF-Rb2CO3-Al2O3-Rb3PO4-H2O system under hydrothermal conditions, and their structure is determined by X-ray diffraction (R = 0.0188): a = 8.3087(1) A, space group \(Fm\bar 3m\), Z = 4, and ρcalcd = 3.88 g/cm3. The hypothesis that Rb elpasolite exists in nature
O. V. Yakubovich, G. V. Kiryukhina, O. V. Dimitrova   +2 more
openaire   +1 more source

The Synthesis and Structures of Elpasolite Halide Scintillators

MRS Proceedings, 2009
AbstractLow-cost, high-performance gamma-ray spectrometers are urgently needed for nonproliferation and homeland security applications. Available scintillation materials fall short of the requirements for energy resolution and sensitivity at room temperature.
Pin Yang, F. Patrick Doty, Mark A. Rodriguez, Margaret R. Sanchez, Xiaowong Zhou, Kanai S. Shah   +5 more
openaire   +1 more source

Comparison of the detection efficiency of the four elpasolite scintillators

Journal of Instrumentation, 2023
Abstract Elpasolite scintillator is a new inorganic scintillator with excellent performance, which can be used for neutron and γ dual mode measurement. The model of elpasolite scintillator detector was established by Geant4 program based on Monte Carlo method, and the detection efficiency of four kinds of elpasolite scintillator
Wei Chen, Jinjia Cao, Biao Zhang, Yulong Zhang, Xiaochang Zheng, Xueyu Gong   +5 more
openaire   +1 more source

Pulse Shape Discrimination With Selected Elpasolite Crystals

IEEE Transactions on Nuclear Science, 2012
In recent years, a number of materials from the elpasolite crystal family have been under development for either or both gamma ray and neutron detection. The scintillators show good energy resolution and thermal neutron detection efficiency. The latter is achieved due to the fact, that the selected compositions contain Li-6 ions.
Jarek Glodo, Rastgo Hawrami, Edgar van Loef, Urmila Shirwadkar, Kanai S. Shah   +4 more
openaire   +1 more source

Optical properties of Tb3+-doped Rb2KInF6 elpasolite

Optical Materials, 1999
Abstract Crystals of Rb 2 KInF 6 :Tb 3+ with elpasolite structure have been prepared by the Bridgman method. Absorption, wide range luminescence, high resolution emission, excitation and luminescence decay measurements have been carried out at low and room temperature in order to study the environments of Tb 3+ ions and their optical properties. An
M.A Buñuel, L Lozano, J.P Chaminade, B Moine, B Jacquier   +4 more
openaire   +1 more source