A Simulation to Study Speed Distributions in a Solar Plasma

Details A Simulation to Study Speed Distributions in a Solar Plasma A Simulation to Study Speed Distributions in a Solar Plasma

Nov 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999stin...0003022c&link_type=abstract

Technical Report, Caelum Research Corp. Moffett Field, CA United States

Computer Science

Numerical Analysis

Plasmas (Physics), Solar Physics, Sun, Mathematical Models, Molecular Dynamics, Computerized Simulation, Numerical Analysis, Velocity Distribution, Electrons, Ions, Coulomb Collisions, Fortran, Maxwell-Boltzmann Density Function

Scientific paper

We have carried out a numerical simulation of a plasma with characteristics similar to those found in the core of the Sun. Particular emphasis is placed on the Coulomb interaction between the ions and electrons, which could result in a relative velocity distribution different from the Maxwell-Boltzmann (MB) distribution generally assumed for a plasma. The fact that the distribution may not exactly follow the MB distribution could have very important consequences for a variety of problems in solar physics, especially the neutrino problem. Very briefly, the neutrino problem is that the observed neutrino detections from the Sun are smaller than what the standard solar theory predicts. In Section I we introduce the problem and in section II we discuss the approach to try to solve the problem: i.e., a molecular dynamics approach. In section III we provide details about the integration method, and any simplifications that can be applied to the problem. In section IV (the core of this report) we state our results. First for the specific case of 1000 particles and then for other cases with different number of particles. In section V we summarize our findings and state our conclusions. Sections VI VII and VIII provide the list of figures, reference material and acknowledgements respectively.

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