Results 31 to 40 of about 125,056 (224)

Structural studies of the brass ingots from the Shcherbet historical complex of the Lower Kama region: neutron diffraction and tomography studies

Eurasian Journal of Physics and Functional Materials, 2022
The structural characteristics and phase composition of several ancient brass ingots obtained in the archeological Shcherbet complex has been studied using neutron diffraction and tomography methods.
A.Zh. Zhomartova, E.F. Shaykhutdinova, B.A. Bakirov, S.E. Kichanov, D.P. Kozlenko, A.G. Sitdikov   +5 more
doaj   +1 more source

Phonons from neutron powder diffraction

, 1998
The spherically averaged structure function $\soq$ obtained from pulsed neutron powder diffraction contains both elastic and inelastic scattering via an integral over energy.
B. H. Toby, C. J. Carlisle, D. A. Dimitrov, D. Louca, D. Louca, D. Louca, G. A. DeWit, H. Biltz, H. Röder, J. M. Perez-Mato, J. S. Chung, M. F. Thorpe, M. Heiroth, M. M. Elcombe, P. Schofield, R. J. Birgeneau, R. L. McGreevy, S. W. Lovesey, T. Egami, U. Buchenau, U. Buchenau   +20 more
core   +1 more source

Characterisation of porous solids using small-angle scattering and NMR cryoporometry [PDF]

, 2004
The characteristics of several porous systems have been studied by the use of small-angle neutron scattering [SANS] and nuclear magnetic resonance [NMR] techniques. The measurements reveal different characteristics for sol-gel silicas, activated carbons
Dore, John C., Strange, John H., Webber, J. Beau W.   +2 more
core   +1 more source

Fast and Accurate Pixel Calibration of Tof Neutron Diffractometers with Machine Learning

Quantum Beam Science
At a spallation neutron source, neutron pulses of varying energies are generated, and the detection of neutrons by instrument detectors is recorded as time-of-flight from the emission of the neutron pulse to its arrival at specific detector pixels with ...
Albert P. Song, Ke An
doaj   +1 more source

Crystal structure and phonon softening in Ca3Ir4Sn13

, 2015
We investigated the crystal structure and lattice excitations of the ternary intermetallic stannide Ca3Ir4Sn13 using neutron and x-ray scattering techniques. For T > T* ~ 38 K the x-ray diffraction data can be satisfactorily refined using the space group
Cervellino, A., Chernyshov, D., Conder, K., Delley, B., Fernandez-Diaz, T. M., Gavilano, J. L., Gerber, S., Keller, L., Kenzelmann, M., Mazzone, D. G., Medarde, M., Neugebauer, M., Piovano, A., Pomjakushina, E., Ramakrishnan, M., Regnault, L. P., Sibille, R.   +16 more
core   +3 more sources

Effect of Deformation Mechanisms on Magnetic Record in Marble Shear Zones

Geochemistry, Geophysics, Geosystems
Processes that form and deform any rock leave distinct imprints on its microstructure. The description and interpretation of these microstructural features aids in understanding rock's evolution.
Zuzana Roxerová, Vladimír Kusbach, Matěj Machek, Monika Kučeráková, Stanislav Vratislav, Anna Vávrová, Martin Chadima   +6 more
doaj   +1 more source

Study on Texture Recognition Capability and Anti-noise Performance of Convolutional Neural Networks

Yuanzineng kexue jishu
Neutron diffraction has been recognized as an ideal analytical technique for investigating material properties and functions through the characterization of phase composition, structural features, and microstructural characteristics.
ZHAO Bokai1, 2, HOU Yuhan1, 2, LIU Xiaolong1, 2, LI Yuqing1, 2, LIU Danmin3, LI Meijuan1, 2, , CHEN Dongfeng1, 2, , ZHANG Yingxun1,
doaj   +1 more source

Elinvar Materials: Recent Progress and Challenges

Advanced Engineering Materials, EarlyView.
Elinvar materials, exhibiting temperature‐invariant elastic modulus, are critical for precision instruments and emerging technologies. This article reviews recent progress in the field, with a focus on the anomalous thermoelastic behavior observed in key material systems.
Wenjie Li, Yang Ren
wiley   +1 more source

Carbon Concentration Dependence of the Superconducting Transition Temperature and Structure of MgCxNi3

, 2001
The crystal structure of the superconductor MgCxNi3 is reported as a function of carbon concentration determined by powder neutron diffraction. The single-phase perovskite structure was found in only a narrow range of carbon content, 0.88 < x < 1.0.
Hayward, He, Huetter, J.W Lynn, Nagamatsu, Q Huang, R.J Cava, Scheil, T He, T.G Amos   +9 more
core   +1 more source

Holographic hyperbranched polymer nanocomposite grating with exceptionally large neutron scattering length density modulation amplitudes

Scientific Reports
Nanoparticle–polymer composite gratings incorporating ultrahigh-refractive-index hyperbranched polymers as organic nanoparticles have demonstrated exceptional light optical properties, yet their potential for neutron diffraction applications remains ...
Elhoucine Hadden, Jürgen Klepp, Martin Fally, Tobias Jenke, Joachim Kohlbrecher, Tomoko Shimada, Asako Narita, Juro Oshima, Yasuo Tomita   +8 more
doaj   +1 more source