Results 71 to 80 of about 535,629 (194)

Theoretical formulation of phase space microbunching instability in the presence of intrabeam scattering for single-pass or recirculation accelerators

Physical Review Accelerators and Beams, 2020
Microbunching instability (MBI) has been one of the most challenging issues in designs of high-brightness beam transport lines for single-pass or recirculating accelerators.
Cheng-Ying Tsai, Weilun Qin, Kuanjun Fan, Xiaofan Wang, Juhao Wu, Guanqun Zhou   +5 more
doaj   +1 more source

Transport of Intensity Equation Microscopy for Dynamic Microtubules

, 2017
Microtubules (MTs) are filamentous protein polymers roughly 25 nm in diameter. Ubiquitous in eukaryotes, MTs are well known for their structural role but also act as actuators, sensors, and, in association with other proteins, checkpoint regulators. The thin diameter and transparency of microtubules classifies them as sub-resolution phase objects, with
openaire   +2 more sources

On the theory of astronomical maser. I. Statistics of maser radiation

, 2009
In this paper we re-analyse the amplification process of broadband continuum radiation by astronomical masers in one-dimensional case. The basic equations appropriate for the scalar maser and the random nature of the maser radiation field are derived ...
Arechi, Born, Casperson, Champeney, Deguchi, Dinh-V-Trung, , Doob, Elitzur, Elitzur, Evans, Field, Field, Goldman, Goldreich, Gray, Icsevgi, Lamb, Litvak, Mandel, Menegozzi, Moran, Nedoluha, Press, Priestley, Rice, Rice, Root, Sargent, Sarma, Thompson, Watson, Watson, Western, Wiener, Yaglom, Yariv   +35 more
core   +1 more source

Macroscopic laser–plasma interaction under strong non-local transport conditions for coupled matter and radiation

Matter and Radiation at Extremes, 2018
Reliable simulations of laser–target interaction on the macroscopic scale are burdened by the fact that the energy transport is very often non-local. This means that the mean-free-path of the transported species is larger than the local gradient scale ...
J. Nikl, M. Holec, M. Zeman, M. Kuchařík, J. Limpouch, S. Weber   +5 more
doaj   +1 more source

Diffusion of Monochromatic Classical Waves

, 2005
We study the diffusion of monochromatic classical waves in a disordered acoustic medium by scattering theory. In order to avoid artifacts associated with mathematical point scatterers, we model the randomness by small but finite insertions.
Bauer, Gerrit E. W., Gerritsen, Sijmen
core   +1 more source

Application of turbulence modeling to predict surface heat transfer in stagnation flow region of circular cylinder [PDF]

A theoretical analysis and numerical calculations for the turbulent flow field and for the effect of free-stream turbulence on the surface heat transfer rate of a stagnation flow are presented.
Wang, Chi R., Yeh, Frederick C.
core   +1 more source

Scaling dependence on time and distance in nonlinear fractional diffusion equations and possible applications to the water transport in soils

, 2004
Recently, fractional derivatives have been employed to analyze various systems in engineering, physics, finance and hidrology. For instance, they have been used to investigate anomalous diffusion processes which are present in different physical systems ...
Fa, Kwok Sau, Lenzi, E. K.
core  

A new multidimensional, energy-dependent two-moment transport code for neutrino-hydrodynamics

, 2015
We present the new code ALCAR developed to model multidimensional, multi energy-group neutrino transport in the context of supernovae and neutron-star mergers.
Janka, H. -Thomas, Just, Oliver, Obergaulinger, Martin   +2 more
core   +1 more source

Evaluation of Eddy Viscosity Models in Predicting Free- Stream Turbulence Penetration

Journal of Applied Fluid Mechanics, 2013
Turbulence schemes have long been developed and examined for their accuracy and stability in a variety of environments. While many industrial flows are highly turbulent, models have rarely been tested to explore whether their accuracy withstands such ...
M. Kahrom, A Shokrgozar
doaj  

Estimation of Radon Flux Density Changes in Temporal Vicinity of the Shipunskoe Earthquake with M_w = 7.0, 17 August 2024 with the Use of the Hereditary Mathematical Model

Geosciences
Using the data of radon accumulation in a chamber with excess volume at one of the points of the Kamchatka subsurface gas-monitoring network, the change in radon flux density due to seismic waves and post-seismic relaxation of the medium is shown.
Dmitrii Tverdyi, Evgeny Makarov, Roman Parovik   +2 more
doaj   +1 more source