HAL : hal-00002022, version 1

arXiv : physics/0410231

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

Keisuke Yamamoto 1, Yasunori Mizuno 1, Hiroshi Inuzuka 1, Yonggao Cao 2, Yan Liu 2, Kenichi Yazawa 2

(14/06/2004)

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.

1 :	Faculty of Engineering
	Shizuoka University
2 :	Hamamatsu Metrix Co., Ltd.
	Hamamatsu Metrix Co., Ltd.

Domaine

:

Physique/Physique/Physique des plasmas

Mots Clés : dusty plasma – particle simulation – special-purpose computer – Coulomb crystal – microgravity

hal-00002022, version 1

http://hal.archives-ouvertes.fr/hal-00002022

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Contributeur : Keisuke Yamamoto <>

Soumis le : Samedi 23 Octobre 2004, 10:16:36

Dernière modification le : Samedi 23 Octobre 2004, 10:38:04