Home >

news Help

Publication Information


Title
Japanese: 
English:Evaluation of Plasma Fluctuation Using Stochastic Model 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:Book of abstracts of ICPIG25 
Volume, Number, Page         p. 339
Published date July 15, 2025 
Publisher
Japanese: 
English:International Scientific Committe of ICPIG 
Conference name
Japanese: 
English:The International Conference on Phenomena in Ionized Gases (XXXVI ICPIG) 
Conference site
Japanese:エクサンプロヴァンス 
English:Aix-en-Provence 
Official URL https://icpig2025.sciencesconf.org/data/pages/Programme_book_with_speaker_list_6.pdf
 
Abstract New evaluation method is proposed using stochastic model for prediction of plasma fluctuation based on collisional- radiative model. Electron impact excitation of atoms is considered as a Wiener process, which is applied to analyze variation in excited-level populations in short time by Malliavin derivative. Relative entropy and fractional Brownian motion are introduced as indicators to evaluate how far a system is from its steady state, where both trend of entropy and contribution of radiative processes to the lifetime of excited states are taken into account. The high statistical weight of some excited states may act as a bottleneck in the energy relaxation throughout the system to a steady state.

©2007 Institute of Science Tokyo All rights reserved.