Results 51 to 60 of about 227,014 (280)

PIC Simulations of Velocity-Space Instabilities in a Decreasing Magnetic Field: Viscosity and Thermal Conduction [PDF]

open access: yes, 2018
We use particle-in-cell (PIC) simulations of a collisionless, electron-ion plasma with a decreasing background magnetic field, $B$, to study the effect of velocity-space instabilities on the viscous heating and thermal conduction of the plasma.
Quataert, Eliot   +2 more
core   +2 more sources

Optical Goniometer Paired with Digital Monte Carlo Twin to Determine the Optical Properties of Turbid Media

open access: yesSensors
We present a goniometer designed for capturing spectral and angular-resolved data from scattering and absorbing media. The experimental apparatus is complemented by a comprehensive Monte Carlo simulation, meticulously replicating the radiative transport ...
Levin Stolz   +3 more
doaj   +1 more source

Upper bounds on absorption and scattering

open access: yesNew Journal of Physics, 2020
A general framework for determining fundamental bounds in nanophotonics is introduced in this paper. The theory is based on convex optimization of dual problems constructed from operators generated by electromagnetic integral equations.
Mats Gustafsson   +3 more
doaj   +1 more source

The Impact of High‐Productivity Processing on the Fatigue Failure of an Additive Manufactured Superalloy HAYNES 282

open access: yesAdvanced Engineering Materials, EarlyView.
The low cycle fatigue life of additive manufactured HAYNES® 282® superalloy was investigated for conventional and high‐productivity processing: samples of the former lasted 1400–1700 cycles, while samples of the latter failed at ~ 1200 cycles, at 760 °C and 1% strain.
Abdul Shaafi Shaikh   +3 more
wiley   +1 more source

Theory of Anomalous X-ray Scattering in Orbital Ordered Manganites

open access: yes, 1997
We study theoretically the anomalous X-ray scattering as a new probe to observe the orbital orderings and excitations in perovskite manganites. The scattering matrix is given by the virtual electronic excitations from Mn $1s$ level to unoccupied Mn $4p ...
Ishihara, Sumio, Maekawa, Sadamichi
core   +1 more source

Transport Mean Free Path for Magneto-Transverse Light Diffusion [PDF]

open access: yes, 1999
We derive an expression for the transport mean free path $\ell^*_\perp$ associated with magneto-transverse light diffusion for a random collection of Faraday-active Mie scatterers.
B. A. van Tiggelen   +8 more
core   +1 more source

RADAR LOCATION CONTRAST IN THE REFLECTION OF ELECTROMAGNETIC WAVE FROM TWO OBJECTS

open access: yesНаучный вестник МГТУ ГА, 2018
The paper considers the problem of finding the power flux density of signals reflected from two objects with different symmetric scattering matrices when they are irradiated with a completely polarized wave.
A. I. Kozlov, V. Yu. Maslov
doaj   +1 more source

Solar Radio Spikes and Type IIIb Striae Manifestations of Subsecond Electron Acceleration Triggered by a Coronal Mass Ejection

open access: yesThe Astrophysical Journal, 2023
Understanding electron acceleration associated with magnetic energy release at subsecond scales presents major challenges in solar physics. Solar radio spikes observed as subsecond, narrow-bandwidth bursts with Δ f / f ∼ 10 ^−3 –10 ^−2 are indicative of ...
Daniel L. Clarkson   +5 more
doaj   +1 more source

Elinvar Materials: Recent Progress and Challenges

open access: yesAdvanced Engineering Materials, EarlyView.
Elinvar materials, exhibiting temperature‐invariant elastic modulus, are critical for precision instruments and emerging technologies. This article reviews recent progress in the field, with a focus on the anomalous thermoelastic behavior observed in key material systems.
Wenjie Li, Yang Ren
wiley   +1 more source

Anisotropy in the Antiferromagnetic Spin Fluctuations of Sr2RuO4

open access: yes, 2004
It has been proposed that Sr_2RuO_4 exhibits spin triplet superconductivity mediated by ferromagnetic fluctuations. So far neutron scattering experiments have failed to detect any clear evidence of ferromagnetic spin fluctuations but, instead, this type ...
A.P. Mackenzie   +30 more
core   +1 more source

Home - About - Disclaimer - Privacy