scholarly journals An analytic model of plasma-neutral coupling in the heliosphere plasma

2010 ◽  
Vol 76 (6) ◽  
pp. 919-927
Author(s):  
DASTGEER SHAIKH ◽  
B. DASGUPTA

AbstractWe have developed an analytic model to describe coupling of plasma and neutral fluids in the partially ionized heliosphere plasma medium. The sources employed in our analytic model are based on a κ-distribution as opposed to the Maxwellian distribution function. Our model uses the κ-distribution to analytically model the energetic neutral atoms that result in the heliosphere partially ionized plasma from charge exchange with the protons and subsequently produce a long tail, which is otherwise not describable by the Maxwellian distribution. We present our analytic formulation and describe major differences in the sources emerging from these two distinct distributions.

1967 ◽  
Vol 20 (2) ◽  
pp. K135-K139 ◽  
Author(s):  
G. Jones ◽  
G. Smith ◽  
A. R. Beattle

1994 ◽  
Vol 144 ◽  
pp. 435-438
Author(s):  
E. Dzifčáková

AbstractWe demonstrate the influence of an electron non-Maxwellian distribution function on the collisional excitation coefficient and, as an example, on the excitation equilibrium of Fe XIV in the solar corona. The results can be used for specific applications in the solar corona, especially in the active corona, where deviations from Maxwellian distribution can be significant.


1990 ◽  
Vol 44 (2) ◽  
pp. 319-335 ◽  
Author(s):  
M. Bornatici ◽  
G. Chiozzi ◽  
P. de Chiara

Analytical expressions for the weakly relativistic dielectric tensor near the electron-cyclotron frequency and harmonies are obtained to any order in finite-Larmor-radius effects for a bi-Maxwellian distribution function. The dielectric tensor is written in ternis of generalized Shkarofsky dispersion functions, whose properties are well known. Relevant limiting cases are considered and, in particular, the anti-Hermitian part of the (fully relativistic) dielectric tensor is evaluated for two cases of strong temperature anisotropy.


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