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Fig. 1 | Chinese Neurosurgical Journal

Fig. 1

From: Plasma medicine for neuroscience—an introduction

Fig. 1

Four states of matter and various plasmas. Plasmas comprise charged and freely moving particles, such as electrons and ions. Plasmas are generated under high temperatures when electrons are detached from neutral atoms. Plasmas are prevalent in nature. For example, stars are mainly plasma. Due to unique physical properties, plasmas are indeed the “fourth state of matter” as distinguished from gases, solids, and liquids. Temperatures and densities of plasma vary extensively (use for reference from “Fusion - Physics of a fundamental energy source, Plasmas - the fourth state of matter, Characteristics of typical plasmas” at http://FusEdWeb.llnl.gov/CPEP/)

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