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Dynamic Light Scattering on Complex Plasmas
Author(s) -
Andreas Aschinger,
J. Winter,
Vladimir Yu. Nosenko,
P. K. Shukla,
Markus H. Thoma,
Hubertus M. Thomas
Publication year - 2011
Publication title -
aip conference proceedings
Language(s) - English
Resource type - Conference proceedings
SCImago Journal Rank - 0.177
H-Index - 75
eISSN - 1551-7616
pISSN - 0094-243X
DOI - 10.1063/1.3659754
Subject(s) - light scattering , plasma , scattering , hysteresis , particle (ecology) , phase (matter) , optics , phase transition , materials science , dynamic light scattering , physics , atomic physics , computational physics , molecular physics , condensed matter physics , nanotechnology , oceanography , quantum mechanics , geology , nanoparticle
The applicability of Dynamic Light Scattering (DLS) on strongly coupled complex plasmas (plasma crystals) in a RF discharge is discussed. A ballistic particle movement is observed and the particle velocity can be measured in all phase states. The results are in very good agreement with video based measurements. Phase transitions were studied in detail. A theoretically predicted hysteresis loop in the phase transition were observed experimentally for the first time. The diffusive particle movement was studied by small angle light scattering. These measurements are also validated by video observations.

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