Results 131 to 140 of about 276 (171)

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
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Low-temperature specific heat of the Rb2KScF6 elpasolite

Physics of the Solid State, 2003
The specific heat of single-crystal Rb2KScF6 is measured using ac calorimetry in the range 4–280 K. The results are discussed in the context of a group-theoretical analysis of possible distortions of the elpasolite structure and of experimental data obtained earlier with an adiabatic calorimeter in a narrower temperature region.
I. N. Flerov, R. Burriel, M. V. Gorev, P. Isla, V. N. Voronov   +4 more
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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
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Structural phase transition in the cubic elpasolite Rb2NaHoF6

Physica B+C, 1982
Abstract Single crystal NMR and X-ray powder diffraction measurements show that at a temperature of 172±2 K the elpasolite Rb 2 NaHoF 6 undergoes a structural phase transition. Our X-ray data at 17 K are seen as evidence for a rotation of the F octahedra about a cubic axis by 5±1°. There is also a small shortening of the c -axis.
E.J. Veenendaal, H.B. Brom, J. Ihringer
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On the structural phase transition in rare earth elpasolites

Zeitschrift f�r Physik B Condensed Matter, 1984
The structural phase transition in two representatives of the rare earth elpasolite fluorides, Rb2NaHoF6 and Rb2NaTmF6, are studied in detail. The symmetry of the soft mode is determined from Raman spectra, X-ray and neutron powder diffraction data to be Γ4+.
P. Selgert, C. Lingner, B. L�thi
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Luminescence of the uranyl-ion-doped elpasolite lattice

Journal of Physics: Condensed Matter, 2000
Distinct species U(III), U(IV), U(V) and U(VI) have been identified when U(VI) or U(IV) species are doped into the cubic elpasolite lattice. The band intensities, and derived vibrational frequencies, in the luminescence and absorption spectra of the uranyl ion situated in this lattice are compared with those of Cs2UO2Cl4.
Peter A Tanner, Chris S K Mak, Zhi-Wu Pei, Yu-Long Liu, Lin Jun   +4 more
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Luminescence of the new elpasolite Rb2KGaF6 doped with Cr3+

Journal of Luminescence, 1991
Abstract Photoluminescence, lifetime, optical absorption and EPR measurements on Rb 2 KGaF 6 :Cr 3+ have been carried out in the 10–300 K temperature range. The emission spectrum at 10 K shows a very rich vibrational structure which can be mainly explained through the vibrational modes of the CrF 6 3− complex.
C.Marco de Lucas, F. Rodríguez, J.M. Dance, M. Moreno, A. Tressaud   +4 more
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Applications of Elpasolites as a Multimode Radiation Sensor

2017
This study consists of both computational and experimental investigations. The computational results enabled detector design selections and confirmed experimental results. The experimental results determined that the CLYC scintillation detector can be applied as a functional and field-deployable multimode radiation sensor.
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Electronic structure engineering of elpasolites: Case of Cs2AgYCl6

Journal of Luminescence, 2013
Abstract Electronic structure engineering of elpasolite-based scintillators is explored for improving light yield and scintillation response. First-principles calculations of electronic structure, polarons, and Ce activator in Cs 2 AgYCl 6 show that the electronegativity of constituent elements of a quaternary elpasolite compound can be manipulated ...
Mao-Hua Du, Koushik Biswas
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Two-photon spectroscopy of europium(III) elpasolites

Journal of Physics: Condensed Matter, 1999
We present polarized two-photon excitation (TPE) spectra, including Zeeman data, for europium(III) in the elpasolites Cs2NaEuCl6 and Cs2NaYF6:Eu3+. Approximately 80 and 60 levels of unambiguous symmetry have been assigned respectively in each compound up to 32 000 cm-1 with the aid of a one-electron crystal field Hamiltonian.
J R G Thorne, M Jones, C S McCaw, K M Murdoch, R G Denning, N M Khaidukov   +5 more
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