Simulations of dusty plasmas using a special-purpose computer system for gravitational N-body problems

Details Simulations of dusty plasmas using a special-purpose computer system for gravitational N-body problems Simulations of dusty plasmas using a special-purpose computer system for gravitational N-body problems

2004-10-23

arxiv.org/abs/physics/0410231v1

Physics

Plasma Physics

12th International Congress on Plasma Physics, 25-29 October 2004, Nice (France)

Scientific paper

Simulations of dusty plasmas were performed using GRAPE-6, a special-purpose computer designed for gravitational N-body problems. The collective behaviour of dust particles, which are injected into the plasma, was studied by means of three-dimensional computer simulations. As an example of a dusty plasma simulation, we have calculated movement of dust particles in plasmas under microgravity conditions. In this simulation, a dust-free region called the "void" is observed in the dust cloud. Another example was to simulate experiments on Coulomb crystals in plasmas. Formation of a Coulomb crystal was observed under typical laboratory conditions. For the simulation of a dusty plasma in microgravity with 3x10^4 particles, GRAPE-6 can perform the whole operation 1000 times faster than by using a Pentium4-1.6GHz CPU.

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