Results 11 to 20 of about 205,983 (267)

Interaction of Ultra-Cold Neutrons with Condensed Matter [PDF]

Nucl.Instrum.Meth.A440:704-708,2000, 1999
General theory of neutron scattering (elastic and inelastic) is presented. It is applicable for the whole domain of slow neutrons and includes as limiting cases existing theories for thermal and cold neutrons and for elastic scattering of UCN. New expression for inelastic scattering cross section for UCN is proposed. It differs from the usually used by
A.L Barabanov, Blokhintsev, Bondarenko, S.T Belyaev   +3 more
arxiv   +3 more sources

Multiple Scattering Theory for Slow Neutrons (from thermal to ultracold) [PDF]

, 1999
The general theory of neutron scattering is presented, valid for the whole domain of slow neutrons from thermal to ultracold. Particular attention is given to multiple scattering which is the dominant process for ultracold neutrons (UCN). For thermal and cold neutrons, when the multiple scattering in the target can be neglected, the cross section is ...
Barabanov, A. L., Belyaev, S. T.
arxiv   +3 more sources

Quasi-elastic neutron scattering in the high-field phase of a Haldane antiferromagnet [PDF]

, 2001
Inelastic neutron scattering experiments on the Haldane-gap quantum antiferromagnet NDMAP are performed in magnetic fields below and above the critical field Hc at which the gap closes. Quasi-elastic neutron scattering is found for H>Hc indicating topological excitations in the high field phase.
A. M. Tsvelik, A. Zheludev, A. Zheludev, A. Zheludev, C. L. Broholm, D. C. Dender, E. Pytte, F. D. M. Haldane, G. Muller, H. J. Mikeska, H. J. Schulz, I. Affleck, I. Affleck, K. Katsumata, K. Katsumata, L. P. Regnault, M. Takahashi, M. Yajima, N. Fujiwara, O. Golinelli, P. P. Mitra, S. M. Shapiro, T. S. S. Sachdev, Y. Chen, Y. Chen, Y. Koike, Z. Honda, Z. Honda, Z. Honda, Z. Honda   +29 more
arxiv   +3 more sources

Phonon Engineering of Micro‐ and Nanophononic Crystals and Acoustic Metamaterials: A Review

Small Science, Volume 3, Issue 1, January 2023., 2023
Phononic crystals and acoustic metamaterials with phonon wave manipulation capabilities have attracted considerable attention. This review summarizes the progress and identifies gaps in phonon engineering at the micro‐ and nanoscales using phononic crystals and metamaterials due to their potential significance in modern electronic applications.
Jihong Ma
wiley   +1 more source

Neutron inelastic cross section measurements on 58,60Ni [PDF]

EPJ Web of Conferences, 2020
A natural nickel sample was used at the GELINA (Geel Electron LINear Accelerator) neutron source of the European Commission, Joint Research Centre, Geel to measure the neutron inelastic cross sections.
Olacel Adina, Borcea Catalin, Boromiza Marian, Dessagne Philippe, Henning Gregoire, Kerveno Maëlle, Negret Alexandra, Nyman Markus, Plompen Arjan   +8 more
doaj   +1 more source

Extending MIEZE spectroscopy towards thermal wavelengths

Journal of Applied Crystallography, Volume 55, Issue 6, Page 1424-1431, December 2022., 2022
A modulation of intensity with zero effort (MIEZE) setup is proposed for high‐resolution neutron spectroscopy at momentum transfers up to 3 Å−1, energy transfers up to 20 meV and an energy resolution in the microelectronvolt range using both thermal and cold neutrons.A modulation of intensity with zero effort (MIEZE) setup is proposed for high ...
Johanna K. Jochum, Christian Franz, Thomas Keller, Christian Pfleiderer   +3 more
wiley   +1 more source

Determination of the target parameters using the Monte Carlo method for an experiment on inelastic neutron scattering in different samples at the "TANGRA" installation

Eurasian Journal of Physics and Functional Materials, 2021
Using the tagged neutron method at the "TANGRA" facility at Frank Laboratory of Neutron Physics of the Joint Institute for Nuclear Research based on the ING-27 standard neutron generator, a study of the 14.1 MeV inelastic neutron scattering reaction on ...
S. B. Dabylova, Yu. N. Kopatch, S. K. Sakhiev, D. N. Grozdanov, N. A. Fedorov   +4 more
doaj   +1 more source

Efficient data reduction for time‐of‐flight neutron scattering experiments on single crystals

Journal of Applied Crystallography, Volume 55, Issue 6, Page 1514-1527, December 2022., 2022
In neutron scattering experiments, data sets with different statistical significance are collected. A new method is presented to efficiently calculate the weights of single‐crystal time‐of‐flight measurements, and to add together the various contributions.Event‐mode data collection presents remarkable new opportunities for time‐of‐flight neutron ...
Andrei T. Savici, Martyn A. Gigg, Owen Arnold, Roman Tolchenov, Ross E. Whitfield, Steven E. Hahn, Wenduo Zhou, Igor A. Zaliznyak   +7 more
wiley   +1 more source

Fast neutron inelastic scattering from 7Li [PDF]

EPJ Web of Conferences, 2020
The inelastic scattering of fast neutrons from 7Li nuclei was investigated at the nELBE neutron-time-of-flight facility. The photon production cross section of 478 keV γ-rays from the first excited state of 7Li was determined by irradiating a disc of LiF
Beyer Roland, Frotscher Axel, Junghans Arnd R., Nyman Markus, Plompen Arjan, Grieger Marcel, Kogler Toni, Ludwig Felix, Reinicke Stefan, Schulz Stefan, Schwengner Ronald, Trinh Thu Trang, UrlaB Sebastian, Wagner Andreas   +13 more
doaj   +1 more source

Coincidence inelastic neutron scattering for detection of two-spin magnetic correlations [PDF]

Phys. Rev. B 103, 054431 (2021), 2020
Inelastic neutron scattering (INS) is one powerful technique to study the low-energy single-spin dynamics of magnetic materials. A variety of quantum magnets show novel magnetic correlations such as quantum spin liquids. These novel magnetic correlations are beyond the direct detection of INS.
arxiv   +1 more source