The spatial evolution of fluctuations in a self-propelled wake compared to a patch of turbulence

2013 ◽  
Vol 25 (9) ◽  
pp. 095106 ◽  
Author(s):  
Anikesh Pal ◽  
Matthew B. de Stadler ◽  
Sutanu Sarkar
Keyword(s):  
Spatial Evolution

Space and Time Distribution of Hard X-Ray Emission in a Loop at the Beginning of a Flare

1994 ◽  
Vol 144 ◽  
pp. 275-277
Author(s):  
M. Karlický ◽  
J. C. Hénoux
Keyword(s):  
Time Distribution ◽  
Electron Bombardment ◽  
Spatial Evolution ◽  
Superthermal Electrons ◽  
Flare Loop ◽  
X Ray ◽  
Superthermal Electron ◽  
Flare Loops ◽  
Chromospheric Evaporation ◽  
Temporal And Spatial

AbstractUsing a new ID hybrid model of the electron bombardment in flare loops, we study not only the evolution of densities, plasma velocities and temperatures in the loop, but also the temporal and spatial evolution of hard X-ray emission. In the present paper a continuous bombardment by electrons isotropically accelerated at the top of flare loop with a power-law injection distribution function is considered. The computations include the effects of the return-current that reduces significantly the depth of the chromospheric layer which is evaporated. The present modelling is made with superthermal electron parameters corresponding to the classical resistivity regime for an input energy flux of superthermal electrons of 109erg cm−2s−1. It was found that due to the electron bombardment the two chromospheric evaporation waves are generated at both feet of the loop and they propagate up to the top, where they collide and cause temporary density and hard X-ray enhancements.

Spatial evolution and driving factors of innovation space in China

2021 ◽  
Vol 14 (17) ◽  
Author(s):  
Lili You ◽  
Limeng Ying ◽  
Jie Yang ◽  
Mingli Zhu
Keyword(s):  
Driving Factors ◽  
Spatial Evolution ◽  
Innovation Space

scholarly journals Dynamical visualization of anisotropic electromagnetic re-emissions from a single metal micro-helix at THz frequencies

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
T. Notake ◽  
T. Iyoda ◽  
T. Arikawa ◽  
K. Tanaka ◽  
C. Otani ◽  
...  
Keyword(s):  
Real Time ◽  
Electromagnetic Waves ◽  
Electromagnetic Compatibility ◽  
Smart Antenna ◽  
Dynamical Behavior ◽  
Measurement Techniques ◽  
Spatial Evolution ◽  
Frequency Spectra ◽  
3D Objects ◽  
Current Oscillations

AbstractThe capability for actual measurements—not just simulations—of the dynamical behavior of THz electromagnetic waves, including interactions with prevalent 3D objects, has become increasingly important not only for developments of various THz devices, but also for reliable evaluation of electromagnetic compatibility. We have obtained real-time visualizations of the spatial evolution of THz electromagnetic waves interacting with a single metal micro-helix. After the micro-helix is stimulated by a broadband pico-second pulse of THz electromagnetic waves, two types of anisotropic re-emissions can occur following overall inductive current oscillations in the micro-helix. They propagate in orthogonally crossed directions with different THz frequency spectra. This unique radiative feature can be very useful for the development of a smart antenna with broadband multiplexing/demultiplexing ability and directional adaptivity. In this way, we have demonstrated that our advanced measurement techniques can lead to the development of novel functional THz devices.

Spatial Evolution of Population Change in Northeast China During 1992–2018

2021 ◽  
pp. 146023
Author(s):  
Haolin You ◽  
Jun Yang ◽  
Bing Xue ◽  
Xiangming Xiao ◽  
Jianhog Cecilia Xia ◽  
...  
Keyword(s):  
Northeast China ◽  
Population Change ◽  
Spatial Evolution

scholarly journals Spatial evolution of an ion beam created by a geometrically expanding low-pressure argon plasma

2008 ◽  
Vol 92 (22) ◽  
pp. 221508 ◽  
Author(s):  
C. S. Corr ◽  
R. W. Boswell ◽  
C. Charles ◽  
J. Zanger
Keyword(s):  
Ion Beam ◽  
Argon Plasma ◽  
Low Pressure ◽  
Spatial Evolution
Sign in / Sign up

Export Citation Format

Share Document