The formation of dust crystal in plasma under the influence of repulsive Yukawa (Debye-Hückel) potential is a well known phenomenon. The regular structure of dust particles is affected by anisotropic ion flow near the sheath region. The bombardment of the ions over dust grains distorts their Debye sphere by overshielding the dust cloud and gives rise to an attractive oscillatory wake potential. In this paper, we have obtained an expression for wake potential along with the Yukawa type of potential in a complex plasma in the presence of magnetic field, for subsonic ion flow towards the plasma sheath. In the presence of magnetic field, interaction potential gets modified and becomes anisotropic. We have studied the combined effect of the attractive wake potential as well as repulsive Yukawa potential on a 2D dust crystal, both in the presence and absence of magnetic field, using molecular dynamic simulation.
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October 2012
Research Article|
October 22 2012
Effect of wake potential on Coulomb crystallization in the presence of magnetic field
Saurav Bhattacharjee;
Saurav Bhattacharjee
a)
Department of Physics,
Tezpur University, Tezpur
, Assam 784 028, India
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Nilakshi Das
Nilakshi Das
Department of Physics,
Tezpur University, Tezpur
, Assam 784 028, India
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a)
Author to whom correspondence should be addressed. Electronic mail: [email protected].
Phys. Plasmas 19, 103707 (2012)
Article history
Received:
July 24 2012
Accepted:
October 04 2012
Citation
Saurav Bhattacharjee, Nilakshi Das; Effect of wake potential on Coulomb crystallization in the presence of magnetic field. Phys. Plasmas 1 October 2012; 19 (10): 103707. https://doi.org/10.1063/1.4762850
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