Results 221 to 230 of about 64,907 (266)

Flux of Particles in Sawtooth Media

Physical Review Letters, 1997
We study Brownian motion in chains of segments with flashing sawtoothlike potentials. In all former models for stochastic ratchets a coherent switching of the potential is assumed. We consider the generalized case which allows independent switchings of the potential in single segments. We introduce three different rules: correlated, anticorrelated, and
Lutz Schimansky-Geier, Maik Kschischo, Thomas Fricke   +2 more
openaire   +1 more source

Hydrodynamic focusing of a particle flux

Journal of Engineering Physics and Thermophysics, 1996
Based on numerical integration of the equations of mechanics of multiphase media, an effect of focusing of a particle flux generated by a source located on the upper wall of a closed vessel has been revealed and investigated.
G. M. Makhviladze, O. I. Melikhov, I. P. Nikolova   +2 more
openaire   +1 more source

Energy, Particle, and Photon Fluxes in Molecular Junctions

The Journal of Physical Chemistry Letters, 2020
Electroluminescence from a current-carrying molecular junction at steady state is simulated. (Charge) particle conservation and energy conservation are satisfied by a perturbative expansion in the radiation/matter coupling. Our approach makes it possible to adopt standard tools of traditional (equilibrium) spectroscopy to study signals from open ...
Hari Kumar Yadalam, Shaul Mukamel, Upendra Harbola   +2 more
openaire   +2 more sources

Turbulent particle flux and momentum flux statistics in suspension flow

Water Resources Research, 2003
The particle entrainment ability of coherent flow structures is investigated by comparing statistical properties of momentum flux u′w′ and of turbulent mass fluxes c′u′ and c′w′ in suspension, open‐channel flow under capacity charge conditions. The quadrant repartitions of these quantities as a function of the corresponding threshold levels are ...
Lemmin, Ulrich, Hurther, D.
openaire   +4 more sources

Quantal particle flux and nuclear halo effects

Physical Review C, 1995
We propose a method to study refractive scattering by looking at the quantal particle flux within the volume occupied by the nuclear potential. The method is applied to discuss the nuclear halo effects in the elastic scattering of [sup 11]Li and [sup 11]C on [sup 12]C at [ital E]/[ital A][similar to]60 MeV.
Silveira, R. Da, Klarsfeld, S., Boukour, A., Leclercq-Willain, C.   +3 more
openaire   +4 more sources

Dynamics of a charged particle in a magnetic-flux lattice

Physical Review B, 1996
The dynamics of a charged particle in a two-dimensional space under the influence of a nonuniform, periodic magnetic field, similar to the magnetic induction inside an extremely type-II superconductor in the vortex state, is studied. The Hamiltonian for this model is found to be classically nonintegrable.
, Rom, , Fishman, , Kosloff, , Maniv
openaire   +2 more sources

Motion of a quantum particle in a random-flux field

Physical Review B, 1993
We consider a charged spinless quantum particle moving on a two-dimensional square lattice. Each plaquette of the lattice is penetrated by a random magnetic flux with values homogeneously distributed in the interval (0, 2π) (in units of the elementary quantum flux h/e). The fluxes in different plaquettes are statistically independent.
, Lusakowski, , Turski
openaire   +2 more sources

Exergy transported by particle fluxes

Physica A: Statistical Mechanics and its Applications, 2008
Abstract A general theory for the available work (exergy) carried by particle fluxes is developed ab initio by using a simple statistical thermodynamics approach. Relationships that may be used for both fermions and bosons are derived. The exergy flux of free particles involves an efficiency-like factor affecting the energy flux. This factor contains
openaire   +1 more source

Flux Quantization and Particle Physics

Physical Review D, 1972
Quantized flux has provided an interesting model for muons and for electrons: One closed flux loop of the form of a magnetic dipole field line is assumed to adopt alternative forms which are superposed with complex probability amplitudes to define the magnetic field of a source lepton.
openaire   +1 more source

Inertial nonlinearity and chaotic motion of particle fluxes

Chaos: An Interdisciplinary Journal of Nonlinear Science, 1993
A brief review is given of the nonlinear phenomena arising in the evolution of random perturbations in particle fluxes of the hydrodynamical type, the velocity field of which is described by equations similar to the Riemann and Burgers equations. It is shown that a nonlinearity of the inertial type deforming the fluxes owing to the inertia of the ...
Gurbatov, S. N., Saichev, A. I.
openaire   +3 more sources