Relevant bibliographies by topics / Density wave

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Density wave'

Author: Grafiati
Published: 4 June 2021
Last updated: 17 June 2025

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Journal articles on the topic "Density wave"

1

Ning, Li, Mu Jie, and Kong Fancun. "Numerical Studies on Bow Waves in Intense Laser-Plasma Interaction." Laser and Particle Beams 2023 (February 15, 2023): 1–11. http://dx.doi.org/10.1155/2023/9414451.

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Laser-driven wakefield acceleration (LWFA) has attracted lots of attention in recent years. However, few writers have been able to make systematic research into the bow waves generated along with the wake waves. Research about the bow waves will help to improve the understanding about the motion of the electrons near the wake waves. In addition, the relativistic energetic electron density peaks have great potential in electron acceleration and reflecting flying mirrors. In this paper, the bow waves generated in laser-plasma interactions as well as the effects of different laser and plasma parameters are investigated. Multidimensional particle-in-cell simulations are made to present the wake waves and bow waves by showing the electron density and momentum distribution as well as the electric field along x and y directions. The evolution of the bow wave structure is investigated by measuring the open angle between the bow wave and the wake wave cavity. The angle as well as the peak electron density and transverse momentum is demonstrated with respect to different laser intensities, spot sizes, plasma densities, and preplasma lengths. The density peak emits high-order harmonics up to 150 orders and can be a new kind of “flying mirror” to generate higher order harmonics. The study on the bow waves is important for further investigation on the electron motion around the wake waves, generation of dense electron beams, generation of high-order harmonics, and other research and applications based on the bow waves.
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Dóra, B., K. Maki, and A. Virosztek. "Magnetotransport in d -wave density waves." Europhysics Letters (EPL) 72, no. 4 (2005): 624–30. http://dx.doi.org/10.1209/epl/i2005-10272-2.

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Dai, Fucai, Feng Zhang, and Xiangyang Li. "SH-SH wave inversion for S-wave velocity and density." GEOPHYSICS 87, no. 3 (2022): A25—A32. http://dx.doi.org/10.1190/geo2021-0314.1.

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SS-waves (SV-SV waves and SH-SH waves) are capable of inverting S-wave velocity ([Formula: see text]) and density ([Formula: see text]) because they are sensitive to both parameters. SH-SH waves can be separated from multicomponent data sets more effectively than the SV-SV wave because the former is decoupled from the PP-wave in isotropic media. In addition, the SH-SH wave can be better modeled than the SV-SV wave in the case of strong velocity/impedance contrast because the SV-SV wave has multicritical angles, some of which can be quite small when velocity/impedance contrast is strong. We derive an approximate equation of the SH-SH wave reflection coefficient as a function of [Formula: see text] and [Formula: see text] in natural logarithm variables. The approximation has high accuracy, and it enables the inversion of [Formula: see text] and [Formula: see text] in a direct manner. Both coefficients corresponding to [Formula: see text] and [Formula: see text] are “model-parameter independent” and thus there is no need for prior estimate of any model parameter in inversion. Then, we develop an SH-SH wave inversion method and demonstrate it by using synthetic data sets and a real SH-SH wave prestack data set from the west of China. We find that [Formula: see text] and [Formula: see text] can be reliably estimated from the SH-SH wave of small angles.
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Tomiyoshi, Shoichi, Hiroyuki Ohsumi, Hisao Kobayashi, and Akiji Yamamoto. "Charge Density Wave Accompanied by Spin Density Wave in Mn3Si." Journal of the Physical Society of Japan 83, no. 4 (2014): 044715. http://dx.doi.org/10.7566/jpsj.83.044715.

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Tang, Huai-Gu, Bing-Shou He, and Hai-Bo Mou. "P- and S-wave energy flux density vectors." GEOPHYSICS 81, no. 6 (2016): T357—T368. http://dx.doi.org/10.1190/geo2016-0245.1.

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The conventional energy flux density vector indicates the propagation direction of mixed P- and S-wave wavefields, which means when a wavefront of P-wave encounters a wavefront of S-wave with different propagation directions, the vectors cannot indicate both directions accurately. To avoid inaccuracies caused by superposition of P- and S-waves in a conventional energy flux density vector, P- and S-wave energy flux density vectors should be calculated separately. Because the conventional energy flux density vector is obtained by multiplying the stress tensor by the particle-velocity vector, the common way to calculate P- and S-wave energy flux density vectors is to decompose the stress tensor and particle-velocity vector into the P- and S-wave parts before multiplication. However, we have found that the P-wave still interfere with the S-wave energy flux density vector calculated by this method. Therefore, we have developed a new method to calculate P- and S-wave energy flux density vectors based on a set of new equations but not velocity-stress equations. First, we decompose elastic wavefield by the set of equations to obtain the P- and S-wave particle-velocity vectors, dilatation scalar, and rotation vector. Then, we calculate the P-wave energy flux density vector by multiplying the P-wave particle-velocity vector by dilatation scalar, and we calculate the S-wave energy flux density vector as a cross product of the S-wave particle-velocity vector and rotation vector. The vectors can indicate accurate propagation directions of P- and S-waves, respectively, without being interfered by the superposition of the two wave modes.
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Voitenko, A. I., and A. M. Gabovich. "Charge density waves in d-wave superconductors." Low Temperature Physics 36, no. 12 (2010): 1049–57. http://dx.doi.org/10.1063/1.3533237.

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Dóra, B., K. Maki, and A. Virosztek. "D-wave density waves in CeCoIn5and highTccuprates." Journal de Physique IV (Proceedings) 131 (December 2005): 319–22. http://dx.doi.org/10.1051/jp4:2005131081.

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Pretre, A., and T. M. Rice. "Spin-density-wave state in a charge-density-wave domain wall." Journal of Physics C: Solid State Physics 19, no. 9 (1986): 1363–76. http://dx.doi.org/10.1088/0022-3719/19/9/009.

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Maki, Kazumi. "Spin-density-wave and charge-density-wave fluctuation and electric conductivity." Physical Review B 41, no. 13 (1990): 9308–14. http://dx.doi.org/10.1103/physrevb.41.9308.

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Spangler, S. R. "Interstellar Magnetohydrodynamic Waves as Revealed by Radio Astronomy." Symposium - International Astronomical Union 140 (1990): 176. http://dx.doi.org/10.1017/s0074180900189880.

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The plasma density fluctuations responsible for interstellar scintillations occur on the same scales as interstellar magnetohydrodynamic waves (Alfvén waves), which are responsible for many important processes such as the acceleration of the cosmic rays. This suggests that these density fluctuations represent a compressive component of MHD waves, and raises the exciting possibility that radioastronomical observations can provide more or less direct measurements of interstellar microphysical processes. Extraction of MHD wave properties from the radio scattering measurements requires a sound theoretical understanding of the relationship between the magnetic field in an MHD wave and the corresponding plasma density perturbation. We present a plasma kinetic theory treatment of the density compression associated with an MHD wave field. The density perturbation may be expressed as the sum of three terms. These terms are proportional to the wave amplitude, wave intensity, and sine transform of the wave intensity, respectively. The coefficients of these three terms are functions of the plasma β, the electron-to-ion temperature ratio, and the angle of wave propagation with respect to the large scale magnetic field. This relation can serve as the basis for inferring the MHD wave field given a radio scattering measurement of the density fluctuation statistics. In an attempt to apply these ideas to the interstellar plasma turbulence, we have made VLBI angular broadening measurements of sources whose lines of sight pass close to supernova remnants. The intensity of MHD waves is expected to be high in the vicinity of the shock waves associated with supernova remnants. We do not yet have unambiguous evidence of enhanced radio wave scattering due to shock-associated MHD waves. However, we have found anomalously high scattering for the source CL4, whose line of sight passes through the Cygnus Loop.
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Dissertations / Theses on the topic "Density wave"

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Gaspar, Luis Alejandro Ladino. "CHARGE DENSITY WAVE POLARIZATION DYNAMICS." UKnowledge, 2008. http://uknowledge.uky.edu/gradschool_diss/643.

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We have studied the charge density wave (CDW) repolarization dynamics in blue bronze (K0.3MoO3) by applying symmetric bipolar square-wave voltages of different frequencies to the sample and measuring the changes in infrared transmittance, proportional to CDW strain. The frequency dependence of the electro-transmittance was fit to a modified harmonic oscillator response and the evolution of the parameters as functions of voltage, position, and temperature are discussed. We found that resonance frequencies decrease with distance from the current contacts, indicating that the resulting delays are intrinsic to the CDW with the strain effectively flowing from the contact. For a fixed position, the average relaxation time for most samples has a voltage dependence given by τ0 ∼ V −p, with 1 < p < 2. The temperature dependence of the fitting parameters shows that the dynamics are governed by both the force on the CDW and the CDW current: for a given force and position, both the relaxation and delay times are inversely proportional to the CDW current as temperature is varied. The long delay times (∼ 100 μs) for large CDW currents suggest that the strain response involves the motion of macroscopic objects, presumably CDW phase dislocation lines. We have done frequency domain simulations to study charge-density-wave (CDW) polarization dynamics when symmetric bipolar square current pulses of different frequencies and amplitudes are applied to the sample, using parameters appropriate for NbSe3 at T = 90 K. The frequency dependence of the strain at one fixed position was fit to the same modified harmonic oscillator response and the behavior of the parameters as functions of current and position are discussed. Delay times increase nonlinearly with distance from the current contacts again, indicating that these are intrinsic to the CDWwith the strain effectively flowing from the contact. For a fixed position and high currents the relaxation time increases with decreasing current, but for low currents its behavior is strongly dependent on the distance between the current contact and the sample ends. This fact clearly shows the effect of the phase-slip process needed in the current conversion process at the contacts. The relaxation and delay times computed (∼ 1 μs) are much shorter than observed in blue bronze (> 100 μs), as expected because NbSe3 is metallic whereas K0.3MoO3 is semiconducting. While our simulated results bear a qualitative resemblance with those obtained in blue bronze, we can not make a quantitative comparison with the K0.3MoO3 results since the CDW in our simulations is current driven, whereas the electro-optic experiment was voltage driven. Different theoretical models predict that for voltages near the threshold Von, quantities such as the dynamic phase velocity correlation length and CDW velocity vary as ξ ∼ |V/Von − 1| −ν and v ∼ |V/Von − 1|ξ with ν ∼ 1/2 and ζ = 5/6. Additionally, a weakly divergent behavior for the diffusion constant D ∼ |V/Von − 1|−2ν+ζ is expected. Motivated by these premises and the fact that no convincing experimental evidence is known, we carried out measurements of the parameters that govern the CDW repolarization dynamic for voltages near threshold. We found that for most temperatures considered the relaxation time still increases for voltages as small as 1.06Von indicating that the CDW is still in the plastic and presumably in the noncritical limit. However, at one temperature we found that the relaxation time saturates with no indication of critical behavior, giving a new upper limit to the critical regime, of |V/Von − 1| < 0.06.
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Zheng, Liqiu. "Spin density wave phases in semiconductor superlattices." Connect to this title online, 2007. http://etd.lib.clemson.edu/documents/1202500635/.

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Aldridge, Christopher John. "Density-wave oscillations in two-phase flows." Thesis, University of Oxford, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.260741.

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Rai, Ram C. "ELECTRO-OPTICAL STUDIES OF CHARGE-DENSITY-WAVE MATERIALS." UKnowledge, 2004. http://uknowledge.uky.edu/gradschool_diss/427.

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A searched for narrow-band-noise (NBN) modulations of the infrared transmission in blue bronze has been performed. No modulations were observed, giving an upper limits for NBN changes in the absorption coefficient of )2000/(/3.0.andlt;.cmNBN. The implication of these results on proposed CDW properties and NBN mechanisms are discussed. An infrared microscope with a capability of doing both reflectance and transmission measurements has been integrated into the previous electro-transmission system with tunable diode lasers. Electro-optic experiments were done using the microscope for the studies of the CDW states of K0.3MoO3 (blue bronze) and orthorhombic TaS3. The electro-reflectance signal for blue bronze has been evidenced for the first time. The infrared reflectance of K0.3MoO3 varied with position when a voltage greater than the CDW depinning threshold is applied. The spatial dependence of .R/R was slightly different than for ./, in that the magnitude of .R/R decreased and, for low voltages and frequencies, the signal became inverted near the contacts. Perhaps the differences might be associated with changes in the CDW properties on the surface. For blue bronze, the electro-reflectance signal was measured to be smaller than electro-transmittance signal by one order of magnitude for light polarized transverse to the chain direction, while the electro-reflectance signal for parallel polarized light was found to be a few times smaller than for transverse polarized light. The fits of the electro-reflectance spectrum showed that the changes in background dielectric constant were ~ 0.05 % and/or oscillator strength and/or frequency shifts of the phonons were ~ 0.05 % and ~ 0.005 cm-1 in the applied electric field. We also found that parallel polarized phonons are affected by CDW strain, and these changes dominate the electro-reflectance spectrum. We have examined the electro-reflectance spectra associated with CDW current investigation for light polarized parallel to the conducting chains for signs of expected current-induced intragap states, and conclude that the density of any such states is at most a few times less than expected. We have observed a large (~1%) change in infrared reflectance of orthorhombic TaS3, when its CDW is depinned. The change is concentrated near one current contact. Assuming that the change in reflectance is proportional to the degree of CDW polarization, we have studied the dynamics of CDW repolarization through position dependent measurements of the variation of the electro-reflectance with the frequency of square wave voltages applied to the sample, and have found that the response could be characterized as a damped harmonic oscillator with a distribution of relaxation (i.e. damping) times. The average relaxation time, which increases away from the contacts, varies with applied voltage as with p ~ 3/2, but the distribution of times broadens as the voltage approaches the depinning threshold. Very low resonant frequencies (~ 1 kHz) indicate a surprisingly large amount of inertia, which is observable in the time dependence of the change in reflectance as a polarity dependent delay of ~ 100 s.
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Dent, Zoë Claire. "ULF wave remote sensing of magnetospheric plasma density." Thesis, University of York, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.403796.

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Ru, Nancy. "Charge density wave formation in rare-earth tritellurides /." May be available electronically:, 2008. http://proquest.umi.com/login?COPT=REJTPTU1MTUmSU5UPTAmVkVSPTI=&clientId=12498.

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Hite, Omar. "Controlling the Charge Density Wave in VSE2 Containing Heterostructures." Thesis, University of Oregon, 2018. http://hdl.handle.net/1794/23179.

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Exploring the properties of layered materials as a function of thickness has largely been limited to semiconducting materials as thin layers of metallic materials tend to oxidize readily in atmosphere. This makes it challenging to further understand properties such as superconductivity and charge density waves as a function of layer thickness that are unique to metallic compounds. This dissertation discusses a set of materials that use the modulated elemental reactants technique to isolate 1 to 3 layers of VSe2 in a superlattice in order to understand the role of adjacent layers and VSe2 thickness on the charge density wave in VSe2. The modulated elemental reactants technique was performed on a custom built physical vapor deposition to prepare designed precursors that upon annealing will self assemble into the desired heterostructure. First, a series of (PbSe)1+δ(VSe2)n for n = 1 – 3 were synthesized to explore if the charge density wave enhancement in the isovalent (SnSe)1.15VSe2 was unique to this particular heterostructure. Electrical resistivity measurements show a large change in resistivity compared to room temperature resistivity for the n = 1 heterostructure. The overall change in resistivity was larger than what was observed in the analogous SnSe heterostructure. v A second study was conducted on (BiSe)1+δVSe2 to further understand the effect of charge transfer on the charge density wave of VSe2. It was reported that BiSe forms a distorted rocksalt layer with antiphase boundaries. The resulting electrical resistivity showed a severely dampened charge density wave when compared to both analogous SnSe and PbSe containing heterostructures but was similar to bulk. Finally, (SnSe2)1+δVSe2 was prepared to further isolate the VSe2 layers and explore interfacial effects on the charge density wave by switching from a distorted rocksalt structure to 1T-SnSe2. SnSe2 is semiconductor that is used to prevent adjacent VSe2 layers from coupling and thereby enhancing the quasi two-dimensionality of the VSe2 layer. Electrical characterization shows behavior similar to that of SnSe and PbSe containing heterostructures. However, structural characterization shows the presence of a SnSe impurity that is likely influencing the overall temperature dependent resistivity. This dissertation includes previously published and unpublished co-authored materials.
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Goddard, Paul. "Magnetotransport studies of layered metallic systems." Thesis, University of Oxford, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.275491.

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Franck, Odile. "A closer look at wave-function/density-functional hybrid methods." Thesis, Paris 6, 2016. http://www.theses.fr/2016PA066303/document.

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La théorie de la fonctionnelle de la densité (DFT) est une reformulation du problème quantique à N corps où l'énergie de l'état fondamental est exprimée sous la forme d'une fonction de la densité électronique. Dans l'approche de Kohn-Sham de la DFT, seule l'énergie dite d'échange-corrélation décrivant la partie non classique de l'interaction électron-électron nécessite d'être approchée comme une fonctionnelle de la densité. Dans le cadre de la thèse nous nous intéressons à une approximation visant à améliorer la précision et qui consiste à combiner de façon rigoureuse une approximation de type " fonctionnelle de la densité " avec un calcul explicite de type " fonction d'onde " à l'aide d'une décomposition de l'interaction électron-électron coulombienne. L'objectif est de disposer de méthodes améliorant la précision de la DFT actuelle avec un effort de calcul restant compétitif. Ce travail de thèse se décompose en trois études distinctes. Une première étude a consisté a étendre l'analyse de la convergence en base à la séparation de portée qui a permit de mettre en évidence une convergence exponentielle pour l'énergie de corrélation MP2 de longue portée. Dans un second temps nous nous sommes intéressés à une approximation auto-cohérente des fonctionnelles double-hybride utilisant la méthode des potentiels-effectifs-optimisés. Finalement la troisième étude propose une analyse de l'approximation adiabatique semi-locale du noyau d'échange et de corrélation de courte portée dans le cadre de la TDDFT avec séparation de portée dans son formalisme de réponse linéaire<br>The theory of the functional of the density ( DFT) is a reformulation of the quantum problem in N body where the energy of the fundamental state is expressed under the shape of a function(office) of the electronic density. In the approach of Kohn-Sham of the DFT, only the said energy of exchange-correlation describing the not classic part(party) of the interaction electron-electron requires to be approached as a functional of the density. Within the framework of the thesis(theory) we are interested in an approximation to improve the precision and which consists in combining(organizing) in a rigorous way an approximation of type(chap) " functional of the density " with an explicit calculation of type(chap) " function(office) of wave " by means of a decomposition of the interaction electron-electron coulombienne. The objective is to have methods
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Reynolds, Eric W. "Laboratory observation of evolution of IEDD-wave-modified equilibrium and density-gradient effects on SMIA wave propagation." Morgantown, W. Va. : [West Virginia University Libraries], 2009. http://hdl.handle.net/10450/10471.

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Thesis (Ph. D.)--West Virginia University, 2009.<br>Title from document title page. Document formatted into pages; contains xxviii, 307 p. : ill. Includes abstract. Includes bibliographical references (p. 118-131).
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Books on the topic "Density wave"

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Tilman, Butz, ed. Nuclear spectroscopy on charge density wave systems. Kluwer Academic Publishers, 1992.

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Butz, Tilman, ed. Nuclear Spectroscopy on Charge Density Wave Systems. Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-015-1299-2.

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Butz, Tilman. Nuclear Spectroscopy on Charge Density Wave Systems. Springer Netherlands, 1992.

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U.S. Nuclear Regulatory Commission. Office of Nuclear Reactor Regulation. Division of Systems Technology. and Oak Ridge National Laboratory, eds. Density-wave instabilities in boiling water reactors. Division of Systems Technology, Office of Nuclear Reactor Regulation, U.S. Nuclear Regulatory Commission, 1992.

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U.S. Nuclear Regulatory Commission. Office of Nuclear Reactor Regulation. Division of Systems Technology. and Oak Ridge National Laboratory, eds. Density-wave instabilities in boiling water reactors. Division of Systems Technology, Office of Nuclear Reactor Regulation, U.S. Nuclear Regulatory Commission, 1992.

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Zong, Alfred. Emergent States in Photoinduced Charge-Density-Wave Transitions. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-81751-0.

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1916-, Lin C. C., ed. Spiral structure in galaxies: A density wave theory. MIT Press, 1996.

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Lubow, Stephen H. Shapes of star-gas waves in spiral galaxies. Space Telescope Science Institute, 1990.

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Lubow, Stephen H. Shapes of star-gas waves in spiral galaxies. Space Telescope Science Institute, 1990.

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Svanholm, K. An analysis of density wave instabilities by means of graphical computations. 2nd ed. Royal Norwegian Council for Scientific and Industrial Research, 1989.

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Book chapters on the topic "Density wave"

1

Maki, K. "Spin Density Wave and Field Induced Spin Density Wave Transport." In Springer Proceedings in Physics. Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-75424-1_19.

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Chen, Huajie, and Reinhold Schneider. "Augmented Plane Wave Methods for Full-Potential Calculations." In Density Functional Theory. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-22340-2_9.

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Wang, X. Q., S. Fantoni, E. Tosatti, and Lu Yu. "Correlated Spin-Density-Wave Theory." In Condensed Matter Theories. Springer US, 1990. http://dx.doi.org/10.1007/978-1-4613-0605-4_22.

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Hutchinson, Maxwell, Paul Fleurat-Lessard, Ani Anciaux-Sedrakian, Dusan Stosic, Jeroen Bédorf, and Sarah Tariq. "Plane-Wave Density Functional Theory." In Electronic Structure Calculations on Graphics Processing Units. John Wiley & Sons, Ltd, 2016. http://dx.doi.org/10.1002/9781118670712.ch7.

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Ishiguro, Takehiko, and Kunihiko Yamaji. "Field-Induced Spin Density Wave." In Springer Series in Solid-State Sciences. Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-97190-7_9.

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Mandelis, Andreas. "Carrier-Density-Wave Fields in Electronic Solids / Semiconductors." In Diffusion-Wave Fields. Springer New York, 2001. http://dx.doi.org/10.1007/978-1-4757-3548-2_10.

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Lehtovaara, Lauri. "The Projector Augmented Wave Method." In Fundamentals of Time-Dependent Density Functional Theory. Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-23518-4_20.

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Mandelis, Andreas. "Diffuse Photon Density Wave Fields in Turbid Media and Tissue." In Diffusion-Wave Fields. Springer New York, 2001. http://dx.doi.org/10.1007/978-1-4757-3548-2_11.

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Holm, Darryl D., Ruiao Hu, and Oliver D. Street. "Coupling of Waves to Sea Surface Currents Via Horizontal Density Gradients." In Mathematics of Planet Earth. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-18988-3_8.

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AbstractThe mathematical models and numerical simulations reported here are motivated by satellite observations of horizontal gradients of sea surface temperature and salinity that are closely coordinated with the slowly varying envelope of the rapidly oscillating waves. This coordination of gradients of fluid material properties with wave envelopes tends to occur when strong horizontal buoyancy gradients are present. The nonlinear models of this coordinated movement presented here may provide future opportunities for the optimal design of satellite imagery that could simultaneously capture the dynamics of both waves and currents directly.The model derived here appears in two levels of approximation: first for rapidly oscillating waves, and then for their slowly varying envelope (SVE) approximation obtained by using the WKB approach. The WKB wave-current-buoyancy interaction model derived here for a free surface with significant horizontal buoyancy gradients indicates that the mechanism for the emergence of these correlations is the ponderomotive force of the slowly varying envelope of rapidly oscillating waves acting on the surface currents via the horizontal buoyancy gradient. In this model, the buoyancy gradient appears explicitly in the WKB wave momentum, which in turn generates density-weighted potential vorticity whenever the buoyancy gradient is not aligned with the wave-envelope gradient.
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Kornilov, A. V., and V. M. Pudalov. "Magnetic Field-Induced Spin-Density Wave and Spin-Density Wave Phases in (TMTSF)2PF6." In The Physics of Organic Superconductors and Conductors. Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-76672-8_16.

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Conference papers on the topic "Density wave"

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James, Bill G. "High power broadband millimeter wave TWTs." In High energy density microwaves. AIP, 1999. http://dx.doi.org/10.1063/1.59038.

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Carlsten, Bruce E. "Design of High-Power, MM-Wave Traveling-Wave Tubes." In HIGH ENERGY DENSITY AND HIGH POWER RF:5TH Workshop on High Energy Density and High Power RF. AIP, 2002. http://dx.doi.org/10.1063/1.1498189.

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Chu, K. R., H. Y. Chen, C. L. Hung, et al. "An ultra high gain gyrotron traveling wave amplifier." In High energy density microwaves. AIP, 1999. http://dx.doi.org/10.1063/1.59006.

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Ives, R. Lawrence. "Design and Test of a Submillimeter-Wave Backward Wave Oscillator." In HIGH ENERGY DENSITY AND HIGH POWER RF: 7th Workshop on High Energy Density and High Power RF. AIP, 2006. http://dx.doi.org/10.1063/1.2158801.

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Blank, M., M. Garven, J. P. Calame, et al. "Experimental demonstration of high power millimeter wave gyro-amplifiers." In High energy density microwaves. AIP, 1999. http://dx.doi.org/10.1063/1.59007.

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Ghosh, Haranath, and Harsh Purwar. "Orbital density wave, spin density wave and superconductivity in Fe-based materials." In FUNCTIONAL MATERIALS: Proceedings of the International Workshop on Functional Materials (IWFM-2011). AIP, 2012. http://dx.doi.org/10.1063/1.4736915.

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Guidotti, Daniel, Hung-Chang Chien, Shu-Hao Fan, Arshad Chowdhury, Tianyi Guo, and Gee-Kung Chang. "Millimeter-wave main memory-to-processor data bus." In High Density Packaging (ICEPT-HDP). IEEE, 2010. http://dx.doi.org/10.1109/icept.2010.5582788.

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Haimson, J., B. Mecklenburg, G. Stowell, K. E. Kreischer, and I. Mastovsky. "Preliminary performance of the MKII 17 GHz traveling wave relativistic klystron." In High energy density microwaves. AIP, 1999. http://dx.doi.org/10.1063/1.59003.

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Xiaoning Li, Chenhui Peng, Yanxin Zhang, et al. "A new continuous wave 2500W semiconductor laser vertical stack." In High Density Packaging (ICEPT-HDP). IEEE, 2010. http://dx.doi.org/10.1109/icept.2010.5582810.

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Hielscher, Andreas H., Frank K. Tittel, and Steven L. Jacques. "Photon Density Wave Diffraction Tomography." In Advances in Optical Imaging and Photon Migration. Optica Publishing Group, 2022. http://dx.doi.org/10.1364/aoipm.1994.apmpdwi.78.

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It is demonstrated that diffraction tomography, an imaging technique which is usually applied with ultrasound waves, can also be used with photon density waves. Resolution in the sub-centimeter range, depending on the optical properties, can be expected.
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Reports on the topic "Density wave"

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March-Leuba, J. Density-wave instabilities in boiling water reactors. Office of Scientific and Technical Information (OSTI), 1992. http://dx.doi.org/10.2172/10183139.

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Seugling, R., S. Woody, and M. Bauza. STANDING WAVE PROBES FOR DIMENSIONAL METROLOGY OF LOW DENSITY FOAMS. Office of Scientific and Technical Information (OSTI), 2010. http://dx.doi.org/10.2172/975224.

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Nik, N., S. R. Rajan, and M. Karasulu. FIBWR2 evaluation of fuel thermal limits during density wave oscillaions in BWRs. Office of Scientific and Technical Information (OSTI), 1995. http://dx.doi.org/10.2172/107755.

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Coleman, R. V., Zhenxi Dai, W. W. McNairy, C. G. Slough, and Chen Wang. Surface structure and spectroscopy of charge-density wave materials using scanning tunneling microscopy. Office of Scientific and Technical Information (OSTI), 1991. http://dx.doi.org/10.2172/5901839.

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Thomson, R. E. Scanning tunneling microscopy of charge density wave structure in 1T- TaS sub 2. Office of Scientific and Technical Information (OSTI), 1991. http://dx.doi.org/10.2172/5130392.

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Coleman, R. V., Zhenxi Dai, W. W. McNairy, C. G. Slough, and Chen Wang. Surface structure and spectroscopy of charge-density wave materials using scanning tunneling microscopy. Office of Scientific and Technical Information (OSTI), 1991. http://dx.doi.org/10.2172/10122090.

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Oladejo, Hafeez, Diana Bernstein, M. Cambazoglu, Dmitri Nechaev, Ali Abdolali, and Jerry Wiggert. Wind Forcing, Source Term and Grid Optimization for Hurricane Wave Modelling in the Gulf of Mexico. Engineer Research and Development Center (U.S.), 2025. https://doi.org/10.21079/11681/49783.

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This study evaluates the performance of WAVEWATCH III model driven by different wind forcing products and behavior of different parameterizations of the model’s source terms controlling energy input and dissipation and quadruplet wave-wave interactions during Hurricane Ida. We also compare the performance of the model configured on uniform unstructured and conventional non-uniform unstructured grids. Key findings show ECMWF-forecast and HRRR out-performed other products in capturing wind speeds relative to buoys, satellite and the revised Atlantic hurricane database observations. However, all products underestimated wind speeds above 20 m/s, with ECMWF and HRRR occasionally performing better for most wind speed values above 35 m/s relative to observations. The corresponding wave simulation results indicated Ida’s wave fields were better captured by model simulations with ECMWF and HRRR wind products, with biases of 2% against buoys in the Gulf of Mexico and 6% and 3% respectively against satellite data. We also highlighted limitations in bulk wave analysis by computing partial Hs and 1D spectra density differences between model and buoy for selected source terms. This reveals consistent overestimation at the lowest frequency bin and underestimation of the three higher frequency bins with a mix of negative and positive energy density difference across different frequencies.
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Thomson, Ruth Ellen. Scanning tunneling microscopy of charge density wave structure in 1T- TaS2. Office of Scientific and Technical Information (OSTI), 1991. http://dx.doi.org/10.2172/10158007.

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Efthimion, P. C., G. Taylor, W. Ernst, et al. One millimeter wave interferometer for the measurement of line integral electron density on TFTR. Office of Scientific and Technical Information (OSTI), 1985. http://dx.doi.org/10.2172/5884179.

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Fox, Matthew W., Xiaoqing Pi, and Jeffrey M. Forbes. First Principles and Applications-Oriented Ionospheric Modeling Studies, and Wave Signatures in Upper Atmosphere Density,. Defense Technical Information Center, 1997. http://dx.doi.org/10.21236/ada325072.

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