Effect of reaction heat on Maxwellian distribution functions and rate of reactions

2007 ◽  
Vol 2007 (12) ◽  
pp. P12003-P12003 ◽  
Author(s):  
Gilberto M Kremer ◽  
Ana Jacinta Soares
Keyword(s):  
Distribution Functions ◽  
Maxwellian Distribution ◽  
Reaction Heat

scholarly journals Measuring heat flux from collective Thomson scattering with non-Maxwellian distribution functions

2019 ◽  
Vol 26 (3) ◽  
pp. 032104 ◽  
Author(s):  
R. J. Henchen ◽  
M. Sherlock ◽  
W. Rozmus ◽  
J. Katz ◽  
P. E. Masson-Laborde ◽  
...  
Keyword(s):  
Heat Flux ◽  
Thomson Scattering ◽  
Distribution Functions ◽  
Maxwellian Distribution ◽  
Collective Thomson Scattering

Effects of Landau Damping and Collision on Stimulated Raman Scattering with Various Phase-Space Distributions

2021 ◽  
Author(s):  
Shanxiu XIE ◽  
Yong CHEN ◽  
Junchen YE ◽  
Yugu CHEN ◽  
Na PENG ◽  
...  
Keyword(s):  
Growth Rate ◽  
Raman Scattering ◽  
Stimulated Raman Scattering ◽  
Deep Understanding ◽  
Distribution Functions ◽  
Maxwellian Distribution ◽  
Landau Damping ◽  
Hot Electron ◽  
Collisional Damping ◽  
Stimulated Raman

Abstract Stimulated Raman scattering (SRS) is one of the main instabilities affecting the success of the fusion ignition. Here, we study the relationship between Raman growth and Landau damping with various distribution functions combining the analytic formulas and Vlasov simulations. The Landau damping obtained by Vlasov-Poisson simulation and Raman growth rate obtained by Vlasov-Maxwell simulation are anti-correlated, which is consistent with our theoretical analysis quantitatively. Maxwellian distribution, flattened distribution, and bi-Maxwellian distribution are studied in detail, which represent three typical stages of SRS. We have also demonstrated the effects of plateau width, hot-electron fraction, hot-to-cold electron temperature ratio, and collisional damping on the Landau damping and growth rate. It gives us a deep understanding of SRS and possible ways to mitigate SRS through manipulating distribution functions to a high Landau damping regime.

HYPERBOLICITY OF GRAD’S EXTENSION OF HYDRODYNAMIC MODELS FOR IONOSPHERIC PLASMA PART I: THE SINGLE SPECIES CASE

1994 ◽  
Vol 04 (05) ◽  
pp. 625-645 ◽  
Author(s):  
STEPHANE CORDIER
Keyword(s):  
Heat Flux ◽  
Boltzmann Equation ◽  
Ionospheric Plasma ◽  
Single Species ◽  
Distribution Functions ◽  
Maxwellian Distribution ◽  
Hydrodynamic Models ◽  
Moment Approximation ◽  
Fluid Equations ◽  
Independent Variable

We present the fluid equations derived by Schunck following Grad’s approach to solve Boltzmann equation for near Maxwellian distribution functions. We study the hyperbolic part of these systems usually referred to as five-, eight-, 10-, 13- and 16-moment approximation. We show that the hyperbolicity of the systems involving the heat flux as an independent variable always requires a limitation on the heat flux. This limitation fails in the auroral ionospheric zones for the terrestrial plasma.

scholarly journals Whistler waves with electron temperature anisotropy and non-Maxwellian distribution functions

AIP Advances ◽  
2018 ◽  
Vol 8 (5) ◽  
pp. 055227 ◽  
Author(s):  
M. Usman Malik ◽  
W. Masood ◽  
M. N. S. Qureshi ◽  
Arshad M. Mirza
Keyword(s):  
Electron Temperature ◽  
Distribution Functions ◽  
Maxwellian Distribution ◽  
Temperature Anisotropy ◽  
Whistler Waves

Full-wave simulations of ICRF heating regimes in toroidal plasma with non-Maxwellian distribution functions

2017 ◽  
Vol 57 (5) ◽  
pp. 056035 ◽  
Author(s):  
N. Bertelli ◽  
E.J. Valeo ◽  
D.L. Green ◽  
M. Gorelenkova ◽  
C.K. Phillips ◽  
...  
Keyword(s):  
Distribution Functions ◽  
Maxwellian Distribution ◽  
Toroidal Plasma ◽  
Full Wave ◽  
Icrf Heating
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