Results 31 to 40 of about 91,859 (302)

A rasterization-based ray-tracing method for laser–plasma interactions

High Power Laser Science and Engineering
This paper introduces a novel ray-tracing methodology for various gradient-index materials, particularly plasmas. The proposed approach utilizes adaptive-step Runge–Kutta integration to compute ray trajectories while incorporating an innovative ...
Tao Tao, Zhujun Li, Kejian Qian, Xian Jiang, Guannan Zheng, Rui Yan, Haoran Liu, Qing Jia, Jun Li, Hang Ding, Jian Zheng   +10 more
doaj   +1 more source

Recent developments of MCViNE and its applications at SNS [PDF]

, 2019
MCViNE is an open source, object-oriented Monte Carlo neutron ray-tracing simulation software package. Its design allows for flexible, hierarchical representations of sophisticated instrument components such as detector systems, and samples with a ...
Abernathy, D. L., Ankner, J. F., Doucet, M., Ehlers, G., Granroth, G. E., Islam, F., Lin, J. Y. Y., Lumsden, I., Sala, G., Smith, Hillary L., Stone, M. B.   +10 more
core   +3 more sources

Integrated modelling and simulation of NiTi alloy by powder bed fusion: Single track study

Materials & Design, 2023
In-depth understanding of the layer-by-layer process is critical for the quality control of additive manufactured (AM) components. Besides the development of experimental techniques, computational modelling is another important way to study the AM ...
Liang-Xing Lu, Hao Jiang, Qin Bian, Wenzhu Shao, Liyi Li, Yong-Wei Zhang, Bo Liang, YuSheng Shi, Liang Zhen   +8 more
doaj   +1 more source

Path-tracing Monte Carlo Library for 3D Radiative Transfer in Highly Resolved Cloudy Atmospheres [PDF]

, 2019
Interactions between clouds and radiation are at the root of many difficulties in numerically predicting future weather and climate and in retrieving the state of the atmosphere from remote sensing observations. The large range of issues related to these
Blanco, Stéphane, Cornet, Céline, Couvreux, Fleur, Eymet, Vincent, Forest, Vincent, Fournier, Richard, Tregan, Jean-Marc, Villefranque, Najda   +7 more
core   +2 more sources

Illustrating Physics with Ray-Traced Computer Graphics

The Physics Teacher, 2006
This paper provides a brief introduction to using ray-traced computer graphics for creating illustrations to be used in physics teaching. The article focuses on Povray, a freely available ray-tracing software program. We have found that a ray-traced illustration produced with this software provides a final-image quality that is far superior to hand ...
openaire   +3 more sources

Evaluation of DIII-D plasmas for Future Measurements of the Driven Current Density in the DIII-D High Field Side Lower Hybrid Experiment [PDF]

EPJ Web of Conferences
High field side (HFS) lower hybrid current drive (LHCD) is a promising method for efficiently driving off-axis current in steady state tokamak power plants. The first test of this technology is underway at the DIII-D tokamak.
Rutherford Grant, Cengher Mirela, Garcia Ivan, Gould Malcolm, Leppink Evan, Lin Yijun, Pierson Samuel, Ridzon James, Seltzman Andrew H., Victor Brian S., Wukitch Stephen J.   +10 more
doaj   +1 more source

Time-resolved optical shadowgraphy of solid hydrogen jets as a testbed to benchmark particle-in-cell simulations

Communications Physics, 2023
Particle-in-cell (PIC) simulations are a widely-used tool to model kinetics-dominated plasmas in ultrarelativistic laser-solid interactions (dimensionless vectorpotential a 0 > 1). However, interactions approaching subrelativistic laser intensities (a 0 ≲
Long Yang, Lingen Huang, Stefan Assenbaum, Thomas E. Cowan, Ilja Goethel, Sebastian Göde, Thomas Kluge, Martin Rehwald, Xiayun Pan, Ulrich Schramm, Jan Vorberger, Karl Zeil, Tim Ziegler, Constantin Bernert   +13 more
doaj   +1 more source

The lower hybrid wave cutoff: A case study in eikonal methods

, 2010
Eikonal, or ray tracing, methods are commonly used to estimate the propagation of radio frequency fields in plasmas. While the information gained from the rays is quite useful, an approximate solution for the fields would also be valuable, e.g., for ...
Bonoli, P. T., Richardson, A. S., Wright, J. C.   +2 more
core   +1 more source

Performance Enhancement and Applications Review of Nano Light Emitting Device (LED)

Nanomaterials, 2020
A nano light emitting device (LED) has been developed and is presented. This new LED, entitled LENS (Light Emitting Nano-pixel Structure), is a new nano-pixel structure designed to enable high-resolution display. It serves as the building block of a more
Harel Perlman, Tsion Eisenfeld, Avi Karsenty   +2 more
doaj   +1 more source

Modelling the black hole silhouette in Sgr A* with ion tori

, 2012
We calculate the "observed at infinity" image and spectrum of the accretion structure in Sgr A*, by modelling it as an optically thin, constant angular momentum ion torus in hydrodynamic equilibrium.
Abramowicz, Abramowicz, Abramowicz, Baganoff, Bardeen, Björnsson, Blaes, Bower, Broderick, Dermer, Dexter, Dodds-Eden, Doeleman, E. Gourgoulhon, Eckart, Eisenhauer, Eisner, Esin, Esin, F. H. Vincent, Falcke, Genzel, Gillessen, Goldston, Hilburn, Huang, Ichimaru, Jaroszynski, Johannsen, Komissarov, Kusunose, Liu, M. A. Abramowicz, Mahadevan, Mahadevan, Marrone, Mościbrodzka, Narayan, Narayan, Narayan, Narayan, O. Straub, Papaloizou, Psaltis, Qian, Rees, Schödel, Schödel, Shapiro, Stepney, Svensson, T. Paumard, Telesco, Vincent, Yuan, Zhao, Zylka, Özel   +57 more
core   +1 more source