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Title
Japanese: 
English:Sensitivity Analysis of Excited-State Population in Plasma Based on Relative Entropy 
Author
Japanese: 島田陽介, 赤塚洋.  
English: Yosuke Shimada, Hiroshi Akatsuka.  
Language English 
Journal/Book name
Japanese: 
English:Entropy 
Volume, Number, Page Vol. 26    No. 9    p. 782
Published date Sept. 12, 2024 
Publisher
Japanese: 
English:MDPI 
Conference name
Japanese: 
English: 
Conference site
Japanese: 
English: 
Official URL https://www.mdpi.com/1099-4300/26/9/782
 
DOI https://doi.org/10.3390/e26090782
Abstract A highly versatile evaluation method is proposed for transient plasmas based on statistical physics. It would be beneficial in various industrial sectors, including semiconductors and automobiles. Our research focused on low-energy plasmas in laboratory settings, and they were assessed via our proposed method, which incorporates relative entropy and fractional Brownian motion, based on a revised collisional–radiative model. By introducing an indicator to evaluate how far a system is from its steady state, both the trend of entropy and the radiative process’ contribution to the lifetime of excited states were considered. The high statistical weight of some excited states may act as a bottleneck in the plasma’s energy relaxation throughout the system to a steady state. By deepening our understanding of how energy flows through plasmas, we anticipate potential contributions to resolving global environmental issues and fostering technological innovation in plasma-related industrial fields.

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