Results 31 to 40 of about 140,039 (279)

Granular Structure Determined by Terahertz Scattering

, 2013
Light-scattering in the terahertz region is demonstrated for granular matter. A quantum-cascade laser is used in a benchtop setup to determine the angle-dependent scattering of spherical grains as well as coffee powder and sugar grains.
Born, Philip, Hübers, Heinz-Wilhelm, Rothbart, Nick, Sperl, Matthias   +3 more
core   +1 more source

Collective Hypersonic Excitations in Strongly Multiple Scattering Colloids

Physical Review Letters, 2011
Unprecedented low-dispersion high-frequency acoustic excitations are observed in dense suspensions of elastically hard colloids. The experimental phononic band structure for SiO(2) particles with different sizes and volume fractions is well represented by rigorous full-elastodynamic multiple-scattering calculations.
Still, T., Gantzounis, G., Kiefer, D., Hellmann, G., Sainidou, R., Fytas, G., G, Stefanou, N.   +6 more
openaire   +5 more sources

Size-dependent Correlation Effects in Ultrafast Optical Dynamics of Metal Nanoparticles

, 1999
We study the role of collective surface excitations in the electron relaxation in small metal particles. We show that the dynamically screened electron-electron interaction in a nanoparticle contains a size-dependent correction induced by the surface ...
A. Kawabata, A. Liebsch, A.A. Lushnikov, B.I. Altshuler, C. Flytzanis, C.K. Sun, D. Pines, F. Hache, G.D. Mahan, G.L. Easley, G.S. Agarwal, H. Ehrenreich, I. E. Perakis, I.E. Perakis, I.E. Perakis, I.E. Perakis, J.-Y. Bigot, L. Yang, M. Brack, M. Nisoli, M. Perner, N. Del Fatti, R.H.M. Groeneveld, S. Ogawa, T. Klar, T. Tokizaki, T. V. Shahbazyan, T.S. Ahmadi, T.V. Shahbazyan, T.W. Roberti, U. Kreibig, U. Sivan, V.V. Krezin, V.V. Krezin, W.A. De Heer, W.S. Fann   +35 more
core   +1 more source

Spectroscopy of soft modes and quantum phase transitions in coupled electron bilayers

, 2003
Strongly-correlated two-dimensional electrons in coupled semiconductor bilayers display remarkable broken symmetry many-body states under accessible and controllable experimental conditions.
Dennis, Brian S., Dujovne, Irene, Luin, Stefano, Pellegrini, Vittorio, Pfeiffer, Loren N., Pinczuk, Aron, Plaut, Annette S., West, Ken W., Xu, Ji Hua   +8 more
core   +1 more source

Collective Thomson scattering diagnostic at Wendelstein 7-X [PDF]

Review of Scientific Instruments, 2019
A Collective Thomson Scattering (CTS) diagnostic is installed at Wendelstein 7-X for ion temperature measurements in the plasma core. The diagnostic utilizes 140 GHz gyrotrons usually used for electron cyclotron resonance heating (ECRH) as a source of probing radiation.
D. Moseev, M. Stejner, T. Stange, I. Abramovic, H. P. Laqua, S. Marsen, N. Schneider, H. Braune, U. Hoefel, W. Kasparek, S. B. Korsholm, C. Lechte, F. Leipold, S. K. Nielsen, M. Salewski, J. Rasmussen, M. Weißgerber, R. C. Wolf   +17 more
openaire   +4 more sources

Coupled-channel analysis of deuteron scattering on 56Fe [PDF]

EPJ Web of Conferences, 2020
The deuteron elastic and inelastic scattering on 56Fe is calculated by using the coupled-channel method and the collective motion models. Based on the experimental angular distributions of scattering processes, an optimal set of parameters are obtained ...
Liu Yujie, Ye Tao, Sun Weili, Guo Hairui
doaj   +1 more source

Hall effect in the cuprates: the role of forward scattering on impurities

, 2000
We solve the Boltzmann equation for electrons moving in a two-dimensional plane of square symmetry in the presence of a transverse magnetic field. We assume that there are two sources of scattering: a large momentum-independent scattering on a collective
Hlubina, R.
core   +1 more source

Disordered but rhythmic—the role of intrinsic protein disorder in eukaryotic circadian timing

FEBS Letters, EarlyView.
Unstructured domains known as intrinsically disordered regions (IDRs) are present in nearly every part of the eukaryotic core circadian oscillator. IDRs enable many diverse inter‐ and intramolecular interactions that support clock function. IDR conformations are highly tunable by post‐translational modifications and environmental conditions, which ...
Emery T. Usher, Jacqueline F. Pelham
wiley   +1 more source

Inelastic neutron scattering applied to the investigation of collective excitations in topologically disordered matter

Condensed Matter Physics, 2008
Inelastic neutron scattering techniques are introduced here as one of the most important experimental techniques in the investigation of collective excitations in fluids (liquids and compressed gases) and amorphous solids.
J.-B.Suck
doaj   +1 more source

Observation of Relativistic Effects in Collective Thomson Scattering [PDF]

Physical Review Letters, 2010
We observe relativistic modifications to the Thomson scattering spectrum in a traditionally classical regime: v(osc)/c = eE(0)/cmomega(0)
Ross, J S, Glenzer, S H, Palastro, J P, Pollock, B B, Price, D, Divol, L, Tynan, G R, Froula, D H   +7 more
openaire   +2 more sources