# New approach to measurement of the three dimensional crystallization front propagation velocity in strongly coupled complex plasma Source: [New approach to measurement of the three dimensional crystallization front propagation velocity in strongly coupled complex plasma]() Collection index: [llms.txt]() Data updated: 2025-10-24T23:46:33.609Z Authors: D.I. Zhukhovitskii, V.N. Naumkin, V.I. Molotkov, A.M. Lipaev, H.M. Thomas (3) \_\_INSTITUTION\_5\_\_ Joint Institute of High Temperatures, Russian Academy of Sciences, Moscow, Russia, (2) Moscow Institute of Physics, Technology, Russia, (3) Institut fuer Materialphsyik im Weltraum, Deutsches Zentrum fuer Luft und Raumfahrt, Wessling, Germany) Published: 2019-03-19T18:16:38.000Z ## Abstract The PK-3 Plus laboratory onboard the International Space Station is used to form complex plasma with a liquidlike particle subsystem in metastable state and to observe the propagation of crystallization fronts corresponding to the surfaces of crystal domains. We propose the "axis" algorithm of solidlike particles identification, which makes it possible to isolate different domains and their surfaces as well. Determination of the three-dimensional front velocity is based on its definition implying that there exists a small area of the domain surface propagating along some line perpendicularly to it. The velocity measured in this way is an important characteristic of the plasma crystallization kinetics. It proves to be almost independent of time and the direction of front propagation and amounts to ca. 60--80 micron per second. ## Recorded benchmark results A research result applies to its stated dataset, split, metric and evaluation configuration. Compare like-for-like settings, preserve the metric's unit and direction, and distinguish paper-reported results from independent reproduction. The best result recorded here is not a claim of exhaustive, current global coverage. ## Original sources and implementation [Original paper]() [PDF]()