scholarly journals An analytical electron distribution function for inelastic collisions in a uniform gas with time varying electric field

1994 ◽  
Author(s):  
M. Garcia
Keyword(s):  
Distribution Function ◽  
Electric Field ◽  
Electron Distribution ◽  
Electron Distribution Function ◽  
Inelastic Collisions ◽  
Time Varying ◽  
Analytical Electron

scholarly journals Fokker-Planck simulations of ultrashort-pulse laser-plasma interactions

1992 ◽  
Vol 10 (3) ◽  
pp. 461-471 ◽  
Author(s):  
L. Drska ◽  
J. Limpouch ◽  
R. Liska
Keyword(s):  
Heat Flux ◽  
Distribution Function ◽  
Laser Radiation ◽  
Electric Field ◽  
Electron Distribution ◽  
Electron Distribution Function ◽  
Laser Pulses ◽  
Ultrashort Laser Pulses ◽  
Ultrashort Pulse Laser ◽  
The Impact

The interaction of ultrashort laser pulses with a fully ionized plasma is investigated in the plane geometry by means of numerical simulation. The impact of the space oscillations in the amplitude of the laser electric field on the shape of the electron distribution function, on laser beam absorption, and on electron heat transport is demonstrated. Oscillations in the absorption rate of laser radiation with the minima coincident to the maxima of the laser electric field lead to a further decrease in the absorption of laser radiation. Heat flux in the direction of increasing temperature in the underdense region is caused by the modification of the electron distribution function and by the density gradient. A limitation of heat flux to the overdense plasma isobserved with the flux limiter in range 0.03–0.08, growing moderately with the intensity 1014–1016 W/cm2 of the incident 1.2-ps laser pulse.

scholarly journals Inelastic Collisions in the Townsend?Huxley Diffusion Experiment

1971 ◽  
Vol 24 (4) ◽  
pp. 841 ◽  
Author(s):  
JLA Francey ◽  
PK Stewart
Keyword(s):  
Distribution Function ◽  
Energy Loss ◽  
Cross Sections ◽  
Electron Distribution ◽  
Electron Distribution Function ◽  
Inelastic Collisions ◽  
Diffusion Experiment ◽  
Inelastic Energy Loss ◽  
The Mean ◽  
Range Of Values

The Boltzmann equation, including density gradients, is solved for the electron distribution function in the Townsend-Huxley experiment. Elastic and inelastic collisions with constant cross sections are assumed to occur, the inelastic energy loss per collision being small compared with the mean energy. The inelastic energy loss and the electron mean energy are calculated and tabulated over a range of values of EIP.

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