Results 51 to 60 of about 21,769 (265)

Fast nonlinear scattering of runaway electron beams through resonant interactions with plasma waves

Nuclear Fusion
The resonant interaction between a runaway electron (RE) beam and a reactor-grade background plasma is investigated through two-dimensional particle-in-cell simulations, employing a simplified model of the system.
Hye Lin Kang, Young Dae Yoon, Myung-Hoon Cho, Gunsu S. Yun   +3 more
doaj   +1 more source

Microscopic Insights into Magnetic Warping and Time‐Reversal Symmetry Breaking in Topological Surface States of Rare‐Earth‐Doped Bi2Te3

Advanced Materials, EarlyView.
Magnetic doping of the topological insulator Bi2Te3 with erbium adatoms induces out‐of‐plane magnetism and breaks time‐reversal symmetry, opening a Dirac gap and driving a Fermi surface transition from hexagonal to star‐of‐David geometry. Microscopy, spectroscopy, and magnetic dichroism reveal atomically controlled magnetic interactions that tailor the
Beatriz Muñiz Cano, Fabián Calleja, Ji Dai, Massimo Tallarida, Vera Marinova, Alessandro Barla, Marc G. Cuxart, Pierluigi Gargiani, Gonzalo N. Molina, José Angel Silva‐Guillén, Adriana I. Figueroa, Kevin García‐Díez, Sergio O. Valenzuela, Aitor Mugarza, Amadeo L. Vázquez de Parga, Rodolfo Miranda, Francisco Guinea, Manuela Garnica, Miguel A. Valbuena   +18 more
wiley   +1 more source

Hamiltonian formalism of state-dependent diffusion and application to laser-cooling atoms

Physical Review Research
A consistent treatment of inhomogeneous diffusion requires a fully Hamiltonian formalism to account for the underlying couplings between various degrees of freedom. We do so by adopting a well-established approach, whereby the cold atom can be modeled as
Wen Bao, Ming-Gen Li, Rui Xing, Jing-Dong Bao   +3 more
doaj   +1 more source

Transport coefficients in standard Kappa distributed plasmas: a comparative study [PDF]

Annales Geophysicae
This study systematically derives transport coefficients – electrical conductivity, thermoelectric, diffusion, and mobility – for a Lorentz plasma described by a standard Kappa distribution function.
M. J. Jwailes, I. A. Barghouthi, Q. S. Atawnah   +2 more
doaj   +1 more source

DIFFUSION COEFFICIENTS IN MOMENTUM FOR A RELATIVISTIC ELECTRON BEAM IN AN UNDULATOR

Problems of Atomic Science and Technology, 2019
We consider a motion of a relativistic electron beam in a spatially periodic magnetic field of an undulator taking into account the influence of the spontaneous radiation fields on this motion. The diffusion coefficients in longitudinal momentum of electrons are found.
openaire   +2 more sources

Momentum theory of diffuser augmented wind turbine.

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B, 1987
Basic equations for a one-dimensional flow ahead and behind of a diffuser augmented wind turbine is derived from the Bernoulli's equation, momentum equation and continuity equation. Then, the output coefficient of the turbine is deduced as a function of area ratio of the diffuser, pressure recovery efficiency and load factor of the turbine.
NAGAI, Minoru, IRABU, Kunio
openaire   +2 more sources

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

Advanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades, Pedro Hidalgo, David Maestre, Ruth Martínez‐Casado, Emilio Nogales, Beatriz Rodríguez, G. Cristian Vásquez, Bianchi Méndez   +7 more
wiley   +1 more source

Computational study on the influence of variable diffusion coefficients on non-fourier transport in shear-rate-dependent fluid with solute particles

Case Studies in Thermal Engineering
Heat transfer in fluids occurs in numerous industrial processes. It is a fact that diffusion coefficients during heat transfer in fluids do not remain constant.
Sayer Obaid Alharbi
doaj   +1 more source

Directional Flow of Confined Polaritons in CrSBr

Advanced Materials, EarlyView.
CrSBr, a layered magnetic semiconductor, naturally channels self‐hybridized excitonpolaritons into highly directional flow. Its intrinsic optical anisotropy, high refractive index, and strong lightmatter coupling enable long‐range guided modes along the a‐axis, with propagation lengths set by their excitonphoton admixture.
Pratap Chandra Adak, Sichao Yu, Jaime Abad‐Arredondo, Biswajit Datta, Andy Cruz, Sorah Fischer, Kseniia Mosina, Zdeněk Sofer, Antonio I. Fernández‐Domínguez, Francisco J. Garcia‐Vidal, Vinod M. Menon   +10 more
wiley   +1 more source

Hydrodynamics of simply spinning black holes & hydrodynamics for spinning quantum fluids

Journal of High Energy Physics, 2020
We find hydrodynamic behavior in large simply spinning five-dimensional Anti-de Sitter black holes. These are dual to spinning quantum fluids through the AdS/CFT correspondence constructed from string theory.
Markus Garbiso, Matthias Kaminski
doaj   +1 more source