Physics
Scientific paper
Mar 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999phla..253..192k&link_type=abstract
Physics Letters A, Volume 253, Issue 3-4, p. 192-198.
Physics
Corona And Transition Region, Numerical Simulation Studies, Waves And Instabilities
Scientific paper
We model coronal heating via recombination using a ``Particle-MHD'' model. In the model we follow the trajectories of particles in self-consistent fields under the influence of the Maxwell stresses and pressure gradients. Fluid properties are derived from the moments of the ion particle distributions. For the recombination process, the electron velocity moments determined from the model are compared against ion velocities. We observe that as ions recombine and exit the plasma, the remaining ions can tap greater energy from the fields generated by recombination, and undergo heating. In the described numerical experiments, ions undergoing recombination are introduced to an unperturbed box of ions which were not affected by recombination. It is observed that: (a) recombination serves as a seed in heating the plasma particles; (b) enhanced field fluctuations can cause ion heating in a feedback mechanism; and (c) the longer the elongation of the simulation box, the greater the resulting overall heating of the particles.
Kazeminezhad Farzad
Schatten Kenneth
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