Investigation and improvement of three-dimensional plasma crystal analysis

被引：8

作者：

Dietz, C. ^{[1
]}

Thoma, M. H. ^{[1
]}

机构：

[1] Univ Giessen, Inst Phys 1, Heinrich Buff Ring 16, D-35392 Giessen, Germany

来源：

PHYSICAL REVIEW E | 2016年 / 94卷 / 03期

关键词：

COMPLEX PLASMAS; DYNAMICS; SPACE;

D O I：

10.1103/PhysRevE.94.033207

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

In this work, existing methods for plasma crystal analysis are investigated using artificial and simulated calibration data, which reproduce a multiphase system consisting of fcc, hcp, and bcc crystal data. Disturbances of the artificial data including Gaussian noise, stretching, and randomly missing particles are used to investigate the methods thoroughly. A popular method, called bond order parameter, has been repeatedly criticized as a structure analysis tool and will be improved with the help of a recent development. The method is called the bcc-sensitive Minkowski structure metric. It enhances robustness and consistency, while remaining compatible with previous bond-order-based results. Also, a promising method rooted in the molecular dynamics community is tested, yielding detailed insight of bond-order-specific drawbacks. With this investigation, the state of three-dimensional plasma crystal analysis will be significantly improved.

引用

页数：8

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