269 citations · 843 across the 12 of their papers we have counts for
12 papers
Cesium Clustering and Fluoroberyllate Network Disruption in FLiBe: A Total Scattering and Molecular Dynamics Study
Sean Fayfar, Rajni Chahal, Danny Wang +7
Several next-generation fission reactor designs employ molten salts such as FLiBe (2LiF-BeF), with some concepts using fuel dissolved directly in the salt. During operation, fi…
High-resolution neutron depolarization microscopy of the ferromagnetic transitions in NiAl and HgCrSe under pressure
Pau Jorba, Michael Schulz, Daniel S. Hussey +6
We performed neutron imaging of ferromagnetic transitions in NiAl and HgCrSe crystals. These neutron depolarization measurements revealed bulk magnetic inhomogeneities…
Compact x-ray source based on burst-mode inverse Compton scattering at 100 kHz
W. S. Graves, J. Bessuille, P. Brown +13
A design for a compact x-ray light source (CXLS) with flux and brilliance orders of magnitude beyond existing laboratory scale sources is presented. The source is based on inverse…
Demonstration of a novel focusing small-angle neutron scattering instrument equipped with axisymmetric mirrors
Dazhi Liu, Boris Khaykovich, Mikhail V. Gubarev +4
Small-angle neutron scattering (SANS) is the most significant neutron technique in terms of impact on science and engineering. However, the basic concept of SANS facilities has not…
Axisymmetric Grazing-Incidence Focusing Optics for Small-Angle Neutron Scattering
Dazhi Liu, Mikhail V. Gubarev, Giacomo Resta +3
We propose and design novel axisymmetric focusing mirrors, known as Wolter optics, for small-angle neutron scattering instruments. Ray-tracing simulations show that using the mirro…
From x-ray telescopes to neutron scattering: using axisymmetric mirrors to focus a neutron beam
B. Khaykovich, M. V. Gubarev, Y. Bagdasarova +2
We demonstrate neutron beam focusing by axisymmetric mirror systems based on a pair of mirrors consisting of a confocal ellipsoid and hyperboloid. Such a system, known as a Wolter…
Field-induced transition between magnetically disordered and ordered phases in underdoped La(2-x)SrxCuO4
B. Khaykovich, S. Wakimoto, R. J. Birgeneau +5
We report the observation of a magnetic-field-induced transition between magnetically disordered and ordered phases in slightly under-doped La(2-x)SrxCuO4 with x=0.144. Static inco…
Thermodynamic properties of excess-oxygen-doped La2CuO4.11 near a simultaneous transition to superconductivity and long-range magnetic order
G. A. Jorge, M. Jaime, L. Civale +7
We have measured the specific heat and magnetization {\it versus} temperature in a single crystal sample of superconducting LaCuO and in a sample of the same materia…
Effect of a magnetic field on long-range magnetic order in stage-4 and stage-6 superconducting La2CuO(4+y)
B. Khaykovich, R. J. Birgeneau, F. C. Chou +7
We have measured the enhancement of the static incommensurate spin-density wave (SDW) order by an applied magnetic field in stage-4 and stage-6 samples of superconducting La2CuO(4+…
First-order disorder-driven transition and inverse melting of the vortex lattice
Nurit Avraham, Boris Khaykovich, Yuri Myasoedov +9
Vortex matter phase transitions in the high-temperature superconductor Bi2Sr2CaCu2O8 were studied using local magnetization measurements combined with a vortex 'shaking' technique.…
Enhancement of long-range magnetic order by magnetic field in superconducting La2CuO(4+y)
B. Khaykovich, Y. S. Lee, R. Erwin +5
We report a detailed study, using neutron scattering, transport and magnetization measurements, of the interplay between superconducting (SC) and spin density wave (SDW) order in L…
Inverse melting of the vortex lattice
Nurit Avraham, Boris Khaykovich, Yuri Myasoedov +9
Inverse melting, in which a crystal reversibly transforms into a liquid or amorphous phase upon decreasing the temperature, is considered to be very rare in nature. The search for…