scholarly journals Propagation speed, linear stability, and ion acceleration in radially imploding Hall-driven electron-magnetohydrodynamic shocks

2018 ◽  
Vol 25 (1) ◽  
pp. 014504
Author(s):  
A. S. Richardson ◽  
S. B. Swanekamp ◽  
S. L. Jackson ◽  
D. Mosher ◽  
P. F. Ottinger
Keyword(s):  
Linear Stability ◽  
Propagation Speed ◽  
Ion Acceleration ◽  
Magnetohydrodynamic Shocks

Effect of Longitudinal Mini-Grooves on Flow Stability and Wave Characteristics of Falling Liquid Films

2007 ◽  
Author(s):  
Klaus Helbig ◽  
Ralph Nasarek ◽  
Tatiana Gambaryan-Roisman ◽  
Peter Stephan
Keyword(s):  
Wave Propagation ◽  
Film Thickness ◽  
Linear Stability ◽  
Propagation Speed ◽  
Wave Theory ◽  
Liquid Films ◽  
Transport Processes ◽  
Thickness Variation ◽  
Experimental Findings ◽  
Falling Liquid Films

Falling liquid films are used in many industrial apparatuses. In many cases the film flow along a wall with topography is considered advantageous for intensification of the transport processes. We use the shadow method and the chromatic white light sensor (CHR) method to study the wavy structure of falling films on flat walls and on walls with longitudinal grooves. We show that the wavy pattern substantially changes on walls with topography. The wave frequency, the wave propagation velocity and the area of the liquid-gas interface decrease on grooved walls. The linear stability of the film has been analyzed using the long-wave theory, which relies on the assumption that the average film thickness is much smaller than the scale of the film thickness variation. The linear stability analysis predicts that the disturbance growth rate, the frequency of the fastest growing disturbance mode and the wave propagation speed decrease on a tube with longitudinal mini-grooves in comparison with a smooth tube. These results agree well with the experimental findings.

Laser ion acceleration for hadron therapy

2014 ◽  
Vol 184 (12) ◽  
pp. 1265-1298 ◽  
Author(s):  
Sergei V. Bulanov ◽  
Jan J. Wilkens ◽  
Timur Zh. Esirkepov ◽  
Georg Korn ◽  
G. Kraft ◽  
...  
Keyword(s):  
Ion Acceleration ◽  
Hadron Therapy

Linear stability of hypersonic flow in thermochemical nonequilibrium

AIAA Journal ◽  
1997 ◽  
Vol 35 ◽  
pp. 958-964
Author(s):  
Mary L. Hudson ◽  
Ndaona Chokani ◽  
Graham V. Candler
Keyword(s):  
Hypersonic Flow ◽  
Linear Stability
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