Open AccessLocalization of active particles in chain structures in a direct current discharge under external influence
Author(s) -
E. A. Koov,
M. M. Vasiliev,
О. Ф. Петров
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1556/1/012075
Subject(s) - brownian motion , cluster (spacecraft) , radiation , physics , laser , particle (ecology) , mean squared displacement , chaotic , displacement (psychology) , copper , mechanics , classical mechanics , materials science , optics , molecular dynamics , quantum mechanics , psychology , oceanography , computer science , metallurgy , psychotherapist , programming language , geology , artificial intelligence
We present the results of the analysis of the trajectories, dynamic entropy, and root-mean-square displacement of moving copper particles in a cluster of chain structures when exposed to laser radiation. We have revealed that the dynamics of the particle motion in the cluster corresponds to three modes: motion in a localized area, Brownian motion, and combined directional chaotic motion. The results of the analysis of linear displacement along and across the direction of motion of dust particles at various values of the laser radiation power are presented. It has been shown experimentally that copper particles are active Brownian particles and their activity grows with increasing laser radiation power, leading to a structural phase transition with the exchange of chain fragments within the cluster.