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Formation of Coulomb crystal in presence of attractive overlapping Debye sphere potential

机译:在存在有吸引力的重叠德拜球势的情况下形成库仑晶体

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摘要

The role of attractive overlapping Debye sphere (ODS) potential on dust crystal formation has been investigated by using molecular dynamics code. A comparative study on plasma crystal formation has been made between Yukawa and coupled Yukawa-ODS potential by calculating pair-correlation function, for different values of Coulomb coupling parameter and screening parameter γ. From our study, it is seen that the attractive ODS potential becomes dominant beyond a critical radius than that of the Yukawa potential. This leads to the fact that the effect due to combined Yukawa-ODS potential depends more sensitively on. From the comparison of the results for Yukawa and ODS potential with experimental results, it is observed that a close agreement is obtained for attractive ODS potential.
机译:使用分子动力学代码研究了有吸引力的重叠德拜球(ODS)势在粉尘晶体形成中的作用。通过计算成对相关函数,对库仑耦合参数和屏蔽参数γ的不同值,对汤河和耦合的汤川ODS电势之间的等离子体晶体形成进行了比较研究。从我们的研究中可以看出,在临界半径范围之外,有吸引力的ODS势比Yukawa势更占优势。这导致这样一个事实,即由汤川-ODS电位联合产生的效应更加敏感。从Yukawa和ODS电位的结果与实验结果的比较,可以观察到,有吸引力的ODS电位获得了密切的一致。

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