Results 41 to 50 of about 538,193 (321)

Drift phase resolved diffusive radiation belt model: 1. Theoretical framework

Frontiers in Astronomy and Space Sciences, 2023
Most physics-based models provide a coarse three-dimensional representation of radiation belt dynamics at low time resolution, of the order of a few drift periods. The description of the effect of trapped particle transport on radiation belt intensity is
Solène Lejosne, Jay M. Albert
doaj   +1 more source

Active single-pixel microscopy for quantitative phase imaging [PDF]

EPJ Web of Conferences
In this work, a motionless method to achieve quantitative phase imaging in single-pixel microscopy based on the transport of intensity equation is presented.
Zapata-Valencia Samuel I., Tobon-Maya Heberley, Lancis Jesus, Tajahuerce Enrique   +3 more
doaj   +1 more source

Optical testing using the transport-of-intensity equation

Optics Express, 2007
The transport-of-intensity equation links the intensity and phase of an optical source to the longitudinal variation of its intensity in the presence of Fresnel diffraction. This equation can be used to provide a simple, accurate spatial-phase measurement for optical testing of flat surfaces. The properties of this approach are derived.
C, Dorrer, J D, Zuegel
openaire   +2 more sources

Field Theoretic Description of Ultrarelativistic Electron-Positron Plasmas [PDF]

, 2008
Ultrarelativistic electron-positron plasmas can be produced in high-intensity laser fields and play a role in various astrophysical situations. Their properties can be calculated using QED at finite temperature.
Beskin, V. S., de Groot, S. R., Kapusta, J. I., Klimov, V. V., Klimov, V. V., Le Bellac, M., Lifshitz, E. M., Markus H. Thoma, Melrose, D. B., Müller, B., Raffelt, G., Reif, F., Silin, V. P., Silin, V. P., Thoma, M. H., Thoma, M. H., Tsytovich, V. N., Tsytovich, V. N., Zel’dovich, Y. B., Zel’dovich, Y. B.   +19 more
core   +3 more sources

Simulated LCSLM with Inducible Diffractive Theory to Display Super-Gaussian Arrays Applying the Transport-of-Intensity Equation

Photonics, 2022
We simulate a liquid crystal spatial light modulator (LCSLM), previously validated by Fraunhofer diffraction to observe super-Gaussian periodic profiles and analyze the wavefront of optical surfaces applying the transport-of-intensity equation (TIE). The
Jesus Arriaga-Hernandez, Bolivia Cuevas-Otahola, Jacobo Oliveros-Oliveros, María Morín-Castillo, Ygnacio Martínez-Laguna, Lilia Cedillo-Ramírez   +5 more
doaj   +1 more source

Higher Order Transport of Intensity Equation Methods: Comparisons and Their Hybrid Application for Noise Adaptive Phase Imaging

IEEE Photonics Journal, 2019
As a non-interferometric method, the transport of intensity equation (TIE) method suits for quantitative phase imaging with the commercial microscope platform, especially those higher order TIE approaches which can realize precise phase retrieval by ...
Junbao Hu, Qi Wei, Yan Kong, Zhilong Jiang, Liang Xue, Fei Liu, Dug Young Kim, Cheng Liu, Shouyu Wang   +8 more
doaj   +1 more source

The effect of strong nonlinearity on wave-induced vertical mixing [PDF]

Earth System Dynamics, 2023
A semi-analytical solution to an advection–diffusion equation is coupled with a nonlinear wavemaker model to investigate the effect of strong nonlinearity on wave-induced mixing.
M. Paprota, W. Sulisz
doaj   +1 more source

Shadowing of Ultrahigh Energy Neutrinos [PDF]

, 1996
The rise with energy of the neutrino--nucleon cross section implies that at energies above few TeV the Earth is becoming opaque to cosmic neutrinos. The neutrinos interact with the nucleons through the weak charged current, resulting into absorption, and
A. Nicolaidis, A. Taramopoulos, Berezinskii, Berezinskii, Bergtröm, de Rujula, Frichter, Frichter, Gaisser, Gribov, Grieder, Kazanas, Kuo, Laenen, Mann, Martin, Morse, Nellen, Reno, Resvanis, Stecker, Stecker, Stecker, Volkova, Wischnewski   +24 more
core   +3 more sources

EFFECT OF INTENSE MAGNETIC FIELDS ON THE TRAJECTORY OF ELECTRONSPROPAGATING IN LOW DENSITY MEDIA OF INTEREST FOR MRI-LINAC RADIOTHERAPY

Anales (Asociación Física Argentina), 2023
Ionizing radiation transport mechanisms in presence of magnetic fields can be described in terms of formalisms based on the Boltzmann radiation transport equation. However, when the transport occurs not in vacuum but in scattering media the difficulty of
A. Gayol, M. Valente
doaj   +1 more source

Radiative Heat Transfer and Effective Transport Coefficients [PDF]

, 2010
The theory of heat transfer by electromagnetic radiation is based on the radiative transfer equation (RTE) for the radiation intensity, or equivalently on the Boltzmann transport equation (BTE) for the photon distribution. We focus in this review article,
Christen, Thomas, Gati, Rudolf, Kassubek, Frank   +2 more
core   +2 more sources