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Journal articles on the topic 'Inelastic dynamics'

Author: Grafiati

Published: 25 January 2025

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1

Chaplot, Samrath L., Narayani Choudhury, Subrata Ghose, Mala N. Rao, Ranjan Mittal, and Prabhatasree Goel. "Inelastic neutron scattering and lattice dynamics of minerals." European Journal of Mineralogy 14, no. 2 (March 22, 2002): 291–329. http://dx.doi.org/10.1127/0935-1221/2002/0014-0291.

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2

Ben-Naim, E., S. Y. Chen, G. D. Doolen, and S. Redner. "Shocklike Dynamics of Inelastic Gases." Physical Review Letters 83, no. 20 (November 15, 1999): 4069–72. http://dx.doi.org/10.1103/physrevlett.83.4069.

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3

REDDY, K. ANKI, J. TALBOT, and V. KUMARAN. "Dynamics of sheared inelastic dumbbells." Journal of Fluid Mechanics 660 (August 16, 2010): 475–98. http://dx.doi.org/10.1017/s0022112010002764.

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We study the dynamical properties of the homogeneous shear flow of inelastic dumbbells in two dimensions as a first step towards examining the effect of shape on the properties of flowing granular materials. The dumbbells are modelled as smooth fused disks characterized by the ratio of the distance between centres (L) and the disk diameter (D), with an aspect ratio (L/D) varying between 0 and 1 in our simulations. Area fractions studied are in the range 0.1–0.7, while coefficients of normal restitution (en) from 0.99 to 0.7 are considered. The simulations use a modified form of the event-driven methodology for circular disks. The average orientation is characterized by an order parameter S, which varies between 0 (for a perfectly disordered fluid) and 1 (for a fluid with the axes of all dumbbells in the same direction). We investigate power-law fits of S as a function of (L/D) and (1−en2). There is a gradual increase in ordering as the area fraction is increased, as the aspect ratio is increased or as the coefficient of restitution is decreased. The order parameter has a maximum value of about 0.5 for the highest area fraction and lowest coefficient of restitution considered here. The mean energy of the velocity fluctuations in the flow direction is higher than that in the gradient direction and the rotational energy, though the difference decreases as the area fraction increases, due to the efficient collisional transfer of energy between the three directions. The distributions of the translational and rotational velocities are Gaussian to a very good approximation. The pressure is found to be remarkably independent of the coefficient of restitution. The pressure and dissipation rate show relatively little variation when scaled by the collision frequency for all the area fractions studied here, indicating that the collision frequency determines the momentum transport and energy dissipation, even at the lowest area fractions studied here. The mean angular velocity of the particles is equal to half the vorticity at low area fractions, but the magnitude systematically decreases to less than half the vorticity as the area fraction is increased, even though the stress tensor is symmetric.

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4

Egami, Takeshi. "Real-Space Description of Dynamics of Liquids." Quantum Beam Science 2, no. 4 (October 28, 2018): 22. http://dx.doi.org/10.3390/qubs2040022.

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In strongly disordered matter, such as liquids and glasses, atomic and magnetic excitations are heavily damped and partially localized by disorder. Thus, the conventional descriptions in terms of phonons and magnons are inadequate, and we have to consider spatially correlated atomic and spin dynamics in real-space and time. Experimentally this means that the usual representation of dynamics in terms of the dynamic structure factor, S(Q, E), where Q and E are the momentum and energy exchanges in scattering, is insufficient. We propose a real-space description in terms of the dynamic pair-density function (DyPDF) and the Van Hove function (VHF) as an alternative, and discuss recent results on superfluid 4He by inelastic neutron scattering and water by inelastic X-ray scattering. Today much of the objects of research in condensed-matter physics and materials science are highly complex materials. To characterize the dynamics of such complex materials, the real-space approach is likely to become the mainstream method of research.

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5

Norville, C. C. "Inelastic Pipework Dynamics and Aseismic Design." Journal of Pressure Vessel Technology 114, no. 3 (August 1, 1992): 328–35. http://dx.doi.org/10.1115/1.2929048.

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This paper shows a simple correlation between elastic and inelastic dynamic pipework responses enabling realistic/pessimistic prediction of dynamic pipework responses beyond the elastic range using current elastic aseismic design procedures. In this paper, theoretical studies relating dynamic responses directly to nonlinear material stress/strain characteristics show how such a correlation arises, particularly for materials exhibiting a well-defined yield point inflection, and the evaluation of the correlative parameters (moduli and damping factors). The ABAQUS computer program was used to study and simulate the dynamic inelastic response characteristics of a pressurized tube in the form of simple beam and a pressurized cantilevered elbow (in-plane responses). Using comparative dynamic test results for these components, the foregoing design concepts were verified for representative cyclic material characteristics. So, given appropriate cyclic material characteristics, pessimistic incremental and reverse cyclic fatigue strains may be simply evaluated for loadings beyond the elastic range (for assessment against ASME fatigue criteria) using existing design techniques as shown in the paper.

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6

Obrant, G. Z. "Inelastic π3He-scattering in πNN-dynamics." Nuclear Physics A 503, no. 3-4 (October 1989): 849–64. http://dx.doi.org/10.1016/0375-9474(89)90443-0.

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7

Piskunov, V. G., Yu N. Fedorenko, and I. M. Didychenko. "Dynamics of inelastic laminated composite shells." Mechanics of Composite Materials 31, no. 1 (1995): 56–62. http://dx.doi.org/10.1007/bf00616737.

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8

Golde, Tom, Constantin Huster, Martin Glaser, Tina Händler, Harald Herrmann, Josef A. Käs, and Jörg Schnauß. "Glassy dynamics in composite biopolymer networks." Soft Matter 14, no. 39 (2018): 7970–78. http://dx.doi.org/10.1039/c8sm01061g.

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9

Koza, Michael Marek, Hannu Mutka, Yoshihiko Okamoto, Jun-ichi Yamaura, and Zenji Hiroi. "On the microscopic dynamics of the ‘Einstein solids’ AlV2Al20 and GaV2Al20, and of YV2Al20: a benchmark system for ‘rattling’ excitations." Physical Chemistry Chemical Physics 17, no. 38 (2015): 24837–50. http://dx.doi.org/10.1039/c5cp04005a.

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The inelastic response of AV₂Al₂₀ (with A = Al, Ga and Y) was probed by high-resolution inelastic neutron scattering experiments and density functional theory (DFT) based lattice dynamics calculations (LDC).

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10

Kratochvíl, Jan. "Dislocation Dynamics and Inelastic Properties of Solids." Materials Science Forum 123-125 (January 1993): 673–84. http://dx.doi.org/10.4028/www.scientific.net/msf.123-125.673.

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11

Yosihama, Tomoyuki, Masakazu Nishi, Kenji Nakajima, Kazuhisa Kakurai, Yasuhiko Fujii, Masahiko Isobe, Chiharu Kagami, and Yutaka Ueda. "Spin Dynamics in NaV2O5– Inelastic Neutron Scattering." Journal of the Physical Society of Japan 67, no. 3 (March 15, 1998): 744–47. http://dx.doi.org/10.1143/jpsj.67.744.

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12

Trouw, Frans R. "Molecular dynamics simulation and inelastic neutron scattering." Spectrochimica Acta Part A: Molecular Spectroscopy 48, no. 3 (March 1992): 455–76. http://dx.doi.org/10.1016/0584-8539(92)80068-8.

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13

Zheng, Yonggang, Hongfei Ye, and Hongwu Zhang. "Twin-induced template effect on the inelastic deformation of hierarchically nanotwinned copper under indentation and scratch." International Journal of Damage Mechanics 25, no. 1 (March 2, 2015): 56–68. http://dx.doi.org/10.1177/1056789515574123.

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The inelastic deformation of hierarchically nanotwinned copper that is composed of primary and secondary twins under indentation and scratch has been investigated by using large-scale molecular dynamics simulations. Simulation results show that the partial dislocation activities are the main factor that dominates the inelastic deformation. Both the indentation and scratch processes show arrest and burst behaviors of partial dislocations, which indicates that the twin boundaries have a template effect on the inelastic deformations. Moreover, it is found that the characteristic size of the inelastic deformation zone increases, respectively, with the increase of the primary and secondary twin spacings.

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14

Feng, Shidong, Li Qi, Gong Li, and Riping Liu. "Molecular Dynamics Simulation of Structural Characterization of Elastic and Inelastic Deformation in ZrCu Metallic Glasses." Journal of Nanomaterials 2014 (2014): 1–6. http://dx.doi.org/10.1155/2014/318757.

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The nanoscopic deformation behaviors in a ZrCu metallic glass model during loading-unloading process under uniaxial compression have been analyzed on the basis of the molecular dynamics (MD). The reversible degree of shear origin zones (SOZs) is used as the structural indicator to distinguish the elastic deformation and inelastic deformation of ZrCu metallic glass at the atomic level. We find that the formation of SOZs is reversible at the elastic stage but irreversible at the inelastic stage during the loading and unloading processes. At the inelastic stage, the full-icosahedra fraction in SOZs is quickly reduced with increased strain and the decreasing process is also irreversible during the unloading processes.

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15

LIPATOV, A. V., and N. P. ZOTOV. "STUDY OF BFKL GLUON DYNAMICS IN HEAVY QUARKONIUM PHOTOPRODUCTION AT HERA." Modern Physics Letters A 15, no. 10 (March 28, 2000): 695–707. http://dx.doi.org/10.1142/s0217732300000682.

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In the framework of semihard QCD approach we consider the processes of inelastic heavy quarkonium photoproduction at HERA with emphasis on the BFKL dynamics of gluon distributions. We investigate the dependences of the total cross-section of inelastic J/Ψ photoproduction and also pT and z spectra on different forms of the unintegrated gluon distribution. It is shown that the total cross-section is most sensitive to the Pomeron intercept parameter Δ. We compare the theoretical results with the available H1 and ZEUS experimental data.

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16

SHVEDOV, L., J. BŁOCKI, and J. WILCZYŃSKI. "TESTS OF THE DYNAMICS OF DEEP INELASTIC COLLISIONS." International Journal of Modern Physics E 14, no. 03 (April 2005): 321–25. http://dx.doi.org/10.1142/s0218301305003065.

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A macroscopic dynamical model of deep-inelastic nucleus-nucleus collisions is presented. We solve Rayleigh-Lagrange equations of motion assuming the mechanism of one-body dissipation. Sensitivity of the model to the assumed strength of the dissipative Rayleigh force (relative to the one-body dissipation) is discussed.

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17

Buren, Bayaer, and Maodu Chen. "Wave Packet Approach to Adiabatic and Nonadiabatic Dynamics of Cold Inelastic Scatterings." Molecules 27, no. 9 (May 3, 2022): 2912. http://dx.doi.org/10.3390/molecules27092912.

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Due to the extremely large de Broglie wavelength of cold molecules, cold inelastic scattering is always characterized by the time-independent close-coupling (TICC) method. However, the TICC method is difficult to apply to collisions of large molecular systems. Here, we present a new strategy for characterizing cold inelastic scattering using wave packet (WP) method. In order to deal with the long de Broglie wavelength of cold molecules, the total wave function is divided into interaction, asymptotic and long-range regions (IALR). The three regions use different numbers of ro-vibrational basis functions, especially the long-range region, which uses only one function corresponding to the initial ro-vibrational state. Thus, a very large grid range can be used to characterize long de Broglie wavelengths in scattering coordinates. Due to its better numerical scaling law, the IALR-WP method has great potential in studying the inelastic scatterings of larger collision systems at cold and ultracold regimes.

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18

Lima, Thamires A., Vitor H. Paschoal, Rafael S. Freitas, Luiz F. O. Faria, Zhixia Li, Madhusudan Tyagi, Y. Z, and Mauro C. C. Ribeiro. "An inelastic neutron scattering, Raman, far-infrared, and molecular dynamics study of the intermolecular dynamics of two ionic liquids." Physical Chemistry Chemical Physics 22, no. 16 (2020): 9074–85. http://dx.doi.org/10.1039/d0cp00374c.

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The THz dynamics of ionic liquids based on tetraalkylammonium cations were investigated by a combined usage of inelastic neutron scattering (INS), Raman, and far-infrared (FIR) spectroscopies and the power spectrum calculated by molecular dynamics (MD) simulations.

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19

Stwalley, William C. "Collisions and reactions of ultracold molecules." Canadian Journal of Chemistry 82, no. 6 (June 1, 2004): 709–12. http://dx.doi.org/10.1139/v04-035.

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It is argued that collision dynamics of atoms and molecules at ultracold temperatures (below 1 mK) are not readily predictable from knowledge of collision dynamics above 100 K. In the case of elastic collisions, it is well known that the collision cross section is constant as T → 0 K but mass and symmetry effects are dramatic. The cases of inelastic and reactive collisions are less studied, but a T1/2 dependence of the cross section as T → 0 K is expected. It seems that extrapolations of high-temperature inelastic and reactive behavior normally greatly underestimate ultracold-temperature rates. The prospects for experimental observation of ultracold collision dynamics are rapidly improving.Key words: ultracold molecules, collisions, reactions, hydrogen, scattering length.

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20

Caciuffo, Roberto, and Gerard H. Lander. "X-ray synchrotron radiation studies of actinide materials." Journal of Synchrotron Radiation 28, no. 6 (November 1, 2021): 1692–708. http://dx.doi.org/10.1107/s1600577521009413.

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By reviewing a selection of X-ray diffraction (XRD), resonant X-ray scattering (RXS), X-ray magnetic circular dichroism (XMCD), resonant and non-resonant inelastic scattering (RIXS, NIXS), and dispersive inelastic scattering (IXS) experiments, the potential of synchrotron radiation techniques in studying lattice and electronic structure, hybridization effects, multipolar order and lattice dynamics in actinide materials is demonstrated.

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21

Rimsza, Jessica M., Scott J. Grutzik, and Reese E. Jones. "Inelastic relaxation in silica via reactive molecular dynamics." Journal of the American Ceramic Society 105, no. 4 (November 9, 2021): 2517–26. http://dx.doi.org/10.1111/jace.18177.

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22

AKPINAR, SINAN, TUNAY TURMUS, and SEDA SURUCU. "QUANTUM DYNAMICS OF THE He + Li2 INELASTIC SCATTERING." Journal of Theoretical and Computational Chemistry 10, no. 03 (June 2011): 297–307. http://dx.doi.org/10.1142/s0219633611006451.

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In this paper, we report the results of three dimensional time dependent quantum wave packet calculations carried out for He+Li2 inelastic reaction in the collision energy range 0.43–1.18 eV. A three dimensional potential energy surface (PES) computed by Varandas was used for the dynamical calculations.1 The state to state and state to all transition probabilities for total angular momentum J = 0 have been calculated in a broad range of collision energies. Integral cross-sections and rate constants have been calculated from the wave packet transition probabilities by means of J-shifting approximation based on a capture model and a uniform J-shifting method for J > 0.

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23

Yang, Junzhong. "Dynamics of a one-dimensional inelastic particle system." Physical Review E 61, no. 3 (March 2000): 2920–23. http://dx.doi.org/10.1103/physreve.61.2920.

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24

Lun, Cliff K. K. "Granular dynamics of inelastic spheres in Couette flow." Physics of Fluids 8, no. 11 (November 1996): 2868–83. http://dx.doi.org/10.1063/1.869068.

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25

Nishi, M., K. Kakurai, Y. Fujii, S. Katano, and J. Akimitsu. "Lattice dynamics of CuGeO3 by inelastic neutron scattering." Journal of Physics and Chemistry of Solids 62, no. 1-2 (January 2001): 355–56. http://dx.doi.org/10.1016/s0022-3697(00)00163-3.

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26

Garcia, Alberto, J. M. Pérez-Mato, and G. Madariaga. "Dynamics of incommensurate structures and inelastic neutron scattering." Physical Review B 39, no. 4 (February 1, 1989): 2476–83. http://dx.doi.org/10.1103/physrevb.39.2476.

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27

Bourges, P., L. P. Regnault, Y. Sidis, J. Bossy, P. Burlet, C. Vettier, J. Y. Henry, and M. Couach. "Spin dynamics by inelastic neutron scattering in YBCO." Journal of Low Temperature Physics 105, no. 3-4 (November 1996): 377–82. http://dx.doi.org/10.1007/bf00768415.

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28

Choudhury, Narayani, and S. L. Chaplot. "Inelastic neutron scattering and lattice dynamics of minerals." Pramana 71, no. 4 (October 2008): 819–28. http://dx.doi.org/10.1007/s12043-008-0193-y.

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29

Middendorf, H. D., S. Magazù, C. Branca, A. Faraone, G. Maisano, P. Migliardo, and V. Villari. "Molecular dynamics of disaccharides by inelastic light scattering." Physica B: Condensed Matter 276-278 (March 2000): 526–27. http://dx.doi.org/10.1016/s0921-4526(99)01506-9.

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30

Murphy, B. M., M. Müller, J. Stettner, H. Requardt, J. Serrano, M. Krisch, and W. Press. "Investigating surface dynamics with inelastic x-ray scattering." Journal of Physics: Condensed Matter 20, no. 22 (May 13, 2008): 224001. http://dx.doi.org/10.1088/0953-8984/20/22/224001.

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31

Lawrence, W. G., T. A. Van Marter, M. L. Nowlin, and M. C. Heaven. "Inelastic collision dynamics of vibrationally excited I2(X)." Journal of Chemical Physics 106, no. 1 (January 1997): 127–41. http://dx.doi.org/10.1063/1.473039.

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32

Kempa, M., J. Hlinka, J. Kulda, P. Bourges, A. Kania, and J. Petzelt. "Lattice dynamics of cubic PbTiO3by inelastic neutron scattering." Phase Transitions 79, no. 6-7 (June 2006): 351–59. http://dx.doi.org/10.1080/01411590600892021.

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33

Mittal, R., S. L. Chaplot, A. I. Kolesnikov, C. K. Loong, O. D. Jayakumar, and S. K. Kulshreshtha. "Inelastic neutron scattering and lattice dynamics of GaPO4." Pramana 63, no. 2 (August 2004): 405–8. http://dx.doi.org/10.1007/bf02705006.

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34

YOSHIDA, Koji. "Liquid Dynamics Investigated by Inelastic X-ray Scattering." BUNSEKI KAGAKU 71, no. 12 (December 5, 2022): 635–44. http://dx.doi.org/10.2116/bunsekikagaku.71.635.

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35

BALDASSARRI, ANDREA, ANDREA PUGLISI, and UMBERTO MARINI BETTOLO MARCONI. "KINETICS MODELS OF INELASTIC GASES." Mathematical Models and Methods in Applied Sciences 12, no. 07 (July 2002): 965–83. http://dx.doi.org/10.1142/s0218202502001982.

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In the present paper we review some recent progresses in the study of the dynamics of cooling granular gases, obtained using idealized models to address different issues of their kinetics. The inelastic Maxwell gas is studied as an introductory mean field model that has the major advantage of being exactly resoluble in the case of scalar velocities, showing an asymptotic velocity distribution with power law tails |v|-4. More realistic models can be obtained placing the same process on a spatial lattice. Two regimes are observed: an uncorrelated transient followed by a dynamical stage characterized by correlations in the velocity field in the form of shocks and vortices. The lattice models, in one and two dimensions, account for different numerical measurements: some of them agree with the already known results, while others have never been efficiently measured and shed light on the deviation from homogeneity. In particular in the velocity-correlated regime the computation of structure factors gives indication of a dynamics similar to that of a diffusion process on large scales with a more complex behavior at shorter scales.

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36

Monet, Geoffrey, Erwan Paineau, Ziwei Chai, Mohamed S. Amara, Andrea Orecchini, Mónica Jimenéz-Ruiz, Alicia Ruiz-Caridad, et al. "Solid wetting-layers in inorganic nano-reactors: the water in imogolite nanotube case." Nanoscale Advances 2, no. 5 (2020): 1869–77. http://dx.doi.org/10.1039/d0na00128g.

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The discovery of an original structure of the water at the inner surface of inorganic aluminogermanate nanotubes and its specific dynamics are reported, based on density functional theory molecular dynamics and inelastic neutron scattering.

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37

Cunha, António M., and Ricardo Loureiro. "Housing price dynamics and elasticities: Portugal's conundrum." National Accounting Review 6, no. 1 (2024): 75–94. http://dx.doi.org/10.3934/nar.2024004.

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<abstract> <p>We aimed to estimate the housing price determinants and elasticities in Portugal's metropolitan areas to help understand the dynamics of the abnormal price increase of the last decade, one of the highest in Europe and the World.</p> <p>We followed a three-step methodology applying panel data and time series regression estimation. First, we estimated the determinants of housing prices at the national and metropolitan area levels. Second, we split the sample by coastal and inner metropolitan areas and estimated the determinants of housing prices and the supply elasticities of each group. Third, we estimated the correlations between housing price growth and elasticities to find whether these determinants correlate.</p> <p>The results showed that at the national level, housing prices are inelastic to aggregate income (0.112). <italic>Momentum</italic> is the most significant determinant of housing prices (0.760). At the metropolitan areas level, we found an inelastic housing supply, a price-to-income elasticity close to zero, and a more inelastic supply in coastal areas. We found no significant correlation between housing price growth, price-to-income, and supply elasticity. The coastal areas registered housing price growth and a <italic>momentum</italic> effect much higher than the inner areas, suggesting the existence of dynamic speculative forces that cause prices to move beyond what can be explained by equilibrium models.</p> <p>The present study contributes to the literature on housing price dynamics by showing that the conventional equilibrium stock-flow model does not explain the increase in Portugal's current housing prices, suggesting that other forces (such as economic uncertainty and sentiment) determine the housing price dynamics. The explanation for the housing price growth in Portugal is a <italic>conundrum</italic>. We believe this knowledge can help define better housing policies at the local and national levels.</p> </abstract>

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38

He, Xiaoling. "Adhesion Dynamics in Probing Micro- and Nanoscale Thin Solid Films." Mathematical Problems in Engineering 2008 (2008): 1–18. http://dx.doi.org/10.1155/2008/742569.

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This study focuses on modeling the probe dynamics in scratching and indenting thin solid films at micro- and nanoscales. The model identifies bifurcation conditions that define the stick-slip oscillation patterns of the tip. It is found that the local energy fluctuations as a function of the inelastic deformation, defect formation, material properties, and contact parameters determine the oscillation behavior. The transient variation of the localized function makes the response nonlinear at the adhesion junction. By quantifying the relation between the bifurcation parameters and the oscillation behavior, this model gives a realistic representation of the complex adhesion dynamics. Specifically, the model establishes the link between the stick-slip behavior and the inelastic deformation and the local potentials. This model justifies the experimental observations and the molecular dynamics simulation of the adhesion and friction dynamics in both the micro- and nanoscale contact.

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39

Prisk, T. R., M. S. Bryan, and P. E. Sokol. "Diffusive and rotational dynamics of condensed n-H2confined in MCM-41." Phys. Chem. Chem. Phys. 16, no. 33 (2014): 17960–74. http://dx.doi.org/10.1039/c4cp02281e.

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40

Schirò, Giorgio. "Probing the dynamics of biological matter by elastic, quasi-elastic, and inelastic neutron scattering." EPJ Web of Conferences 236 (2020): 05001. http://dx.doi.org/10.1051/epjconf/202023605001.

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The so-called function-structure-dynamics paradigm established that a close relationship links the way biological molecules work (function), their 3-dimensional organization (structure) and the changes of this organization in time (dynamics), which characterize biomolecules as highly dynamic objects. A typical example of protein dynamics is provided by protein reactions with substrates: equilibrium thermal fluctuations of protein structure are necessary to allow the access of substrates to the active site, where the functional reaction occurs. Neutron scattering is a powerful technique to study equilibrium protein structural dynamics. The incoherent structure factor, which is dominant in neutron scattering from biological matter, is related to the time-position self correlation function of protein/solvent nuclei. Here the basic theory of neutron scattering and the principles of the technologies used to measure it are described. Some selected applications of neutron scattering for investigating the structural dynamics of biological molecules are also reviewed.

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41

Kakurai, Kazuhisa. "V-5 Spin Dynamics—Polarized Neutron Inelastic Scattering Experiments on Spin Dynamics—." RADIOISOTOPES 65, no. 3 (2016): 145–55. http://dx.doi.org/10.3769/radioisotopes.65.145.

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42

Ansbro, Simon, Eufemio Moreno-Pineda, Wen Yu, Jacques Ollivier, Hannu Mutka, Mario Ruben, and Alessandro Chiesa. "Magnetic properties of transition metal dimers probed by inelastic neutron scattering." Dalton Transactions 47, no. 34 (2018): 11953–59. http://dx.doi.org/10.1039/c8dt02570c.

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43

Kowalewski, Markus, Kochise Bennett, and Shaul Mukamel. "Monitoring nonadiabatic dynamics in molecules by ultrafast X-Ray diffraction." EPJ Web of Conferences 205 (2019): 09032. http://dx.doi.org/10.1051/epjconf/201920509032.

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We theoretically examine time-resolved diffraction from molecules which undergo non-adiabatic dynamics and identify contributions from inelastic scattering that indicate the presence of an avoided crossing and the corresponding nuclear configuration.

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44

Nakatani, A. I., R. Ivkov, P. Papanek, H. Yang, and M. Gerspacher. "Inelastic Neutron Scattering from Filled Elastomers." Rubber Chemistry and Technology 73, no. 5 (November 1, 2000): 847–63. http://dx.doi.org/10.5254/1.3547624.

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Abstract Inelastic neutron scattering experiments are powerful techniques for evaluating local molecular dynamics. These methods are especially sensitive to hydrogen atoms containing motions. An overview of these experimental techniques is presented. Neutron filter analyzer and time-of-flight spectroscopy methods are used to characterize the local dynamics of polymers in the presence and absence of fillers. Of particular interest is the comparison between bound rubber attached to the filler surface and the pure, unbound rubber. A commercial synthetic polyisoprene containing approximately 100% cis-1,4 isomers was compounded with three different carbon blacks: N299, G299 (graphitized N299), and N762. Soxhlet extraction on each of the samples was performed so that corresponding samples containing purely bound rubber with filler were obtained. The filter analyzer and time-of flight spectra show distinct differences between the bound and pure rubber as well as differences based on carbon black type. Correlation of the spectral differences to the type of carbon black and initial concentration of carbon black are discussed.

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45

Mozur, Eve M., and James R. Neilson. "Cation Dynamics in Hybrid Halide Perovskites." Annual Review of Materials Research 51, no. 1 (July 26, 2021): 269–91. http://dx.doi.org/10.1146/annurev-matsci-080819-012808.

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Hybrid halide perovskite semiconductors exhibit complex, dynamical disorder while also harboring properties ideal for optoelectronic applications that include photovoltaics. However, these materials are structurally and compositionally distinct from traditional compound semiconductors composed of tetrahedrally coordinated elements with an average valence electron count of silicon. The additional dynamic degrees of freedom of hybrid halide perovskites underlie many of their potentially transformative physical properties. Neutron scattering and spectroscopy studies of the atomic dynamics of these materials have yielded significant insights into their functional properties. Specifically, inelastic neutron scattering has been used to elucidate the phonon band structure, and quasi-elastic neutron scattering has revealed the nature of the uncorrelated dynamics pertaining to molecular reorientations. Understanding the dynamics of these complex semiconductors has elucidated the temperature-dependent phase stability and origins of defect-tolerant electronic transport from the highly polarizable dielectric response. Furthermore, the dynamic degrees of freedom of the hybrid perovskites provide additional opportunities for application engineering and innovation.

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46

Colognesi, Daniele, Franz Demmel, Alessandra Filabozzi, Antonino Pietropaolo, Alfonso Pozio, Giovanni Romanelli, Alessia Santucci, and Silvano Tosti. "Proton Dynamics in Palladium–Silver: An Inelastic Neutron Scattering Investigation." Molecules 25, no. 23 (November 27, 2020): 5587. http://dx.doi.org/10.3390/molecules25235587.

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Proton dynamics in Pd77Ag23 membranes is investigated by means of various neutron spectroscopic techniques, namely Quasi Elastic Neutron Scattering, Incoherent Inelastic Neutron Scattering, Neutron Transmission, and Deep Inelastic Neutron Scattering. Measurements carried out at the ISIS spallation neutron source using OSIRIS, MARI and VESUVIO spectrometers were performed at pressures of 1, 2, and 4 bar, and temperatures in the 330–673 K range. The energy interval spanned by the different instruments provides information on the proton dynamics in a time scale ranging from about 102 to 10−4 ps. The main finding is that the macroscopic diffusion process is determined by microscopic jump diffusion. In addition, the vibrational density of states of the H atoms in the metal lattice has been determined for a number of H concentrations and temperatures. These measurements follow a series of neutron diffraction experiments performed on the same sample and thus provide a complementary information for a thorough description of structural and dynamical properties of H-loaded Pd-Ag membranes.

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47

Zhou Zhi-Gang, Shi Yu-Ren, Liu Cong-Bo, Wang Guang-Hui, and Yang Hong-Juan. "Study on the dynamics of an inelastic bouncing ball." Acta Physica Sinica 61, no. 20 (2012): 200501. http://dx.doi.org/10.7498/aps.61.200501.

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48

Suits, A. G., P. de Pujo, O. Sublemontier, J. P. Visticot, J. Berlande, J. Cuvellier, T. Gustavsson, J. M. Mestdagh, P. Meynadier, and Y. T. Lee. "Dynamics of electronically inelastic collisions from 3D Doppler measurements." Physical Review Letters 67, no. 22 (November 25, 1991): 3070–73. http://dx.doi.org/10.1103/physrevlett.67.3070.

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49

Williamson, Eric B., and Keith D. Hjelmstad. "Nonlinear Dynamics of a Harmonically-Excited Inelastic Inverted Pendulum." Journal of Engineering Mechanics 127, no. 1 (January 2001): 52–57. http://dx.doi.org/10.1061/(asce)0733-9399(2001)127:1(52).

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50

Carlen, Eric, Shui-Nee Chow, and Alexander Grigo. "Dynamics and hydrodynamic limits of the inelastic Boltzmann equation." Nonlinearity 23, no. 8 (July 2, 2010): 1807–49. http://dx.doi.org/10.1088/0951-7715/23/8/003.

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