2008/05/29 by H. Baumgartner, D. Asmus, V. Golubnychiy +4 · 27 citations
Earth and Planetary Sciences · Medicine · Physics and Astronomy · #Atomic physics #Cluster (spacecraft) #Cold Atom Physics and Bose-Einstein Condensates #Dust and Plasma Wave Phenomena #Ground state #High-pressure geophysics and materials #Medicine #Molecular dynamics #Molecular physics #Particle (ecology) #Physics #Population #Quantum mechanics #Range (aeronautics) #Shell (structure) #Spherical shell #Yukawa potential #physics.plasm-ph
paper · pdf · doi:10.1088/1367-2630/10/9/093019
published in New Journal of Physics 10(9), 093019 (IOP Publishing)
arxiv created 2008/05/29 · openalex publication_date 2008/09/15 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Small three-dimensional strongly coupled clusters of charged particles in a spherical confinement potential arrange themselves in nested concentric shells. If the particles are immersed into a background plasma the interaction is screened. The cluster shell configuration is known to be sensitive to the screening strength. With increased screening, an increased population of the inner shell(s) is observed. Here, we present a detailed analysis of the ground state shell configurations and configuration changes in a wide range of screening parameters for clusters with particle numbers N in the range of 11 to 60. We report three types of anomalous behaviors which are observed upon increase of screening, at fixed N or for an increase of N at fixed screening. The results are obtained by means of extensive first principle molecular dynamics simulations.