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Similarity between blackbody and synchrotron radiation analyzed by Tsallis entropy
Author(s) -
Iwasaki Hiroyuki,
Kawai Jun,
Yuge Koretaka,
Nagy Ágnes
Publication year - 2012
Publication title -
x‐ray spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.447
H-Index - 45
eISSN - 1097-4539
pISSN - 0049-8246
DOI - 10.1002/xrs.2362
Subject(s) - bremsstrahlung , black body radiation , physics , synchrotron radiation , tsallis entropy , entropy (arrow of time) , spectral line , radiation , computational physics , electron , quantum mechanics
It is believed that blackbody and bremsstrahlung are completely different phenomena. However, their spectral shapes are somewhat similar to each other. We demonstrate that synchrotron radiation spectra, which are relativistic magnetic bremsstrahlung, can be approximated by blackbody radiation through Tsallis entropy under the dulite gas approximation at Tsallis non‐extensive parameter q = 1.05. The error of mean square is 4 × 10 −6 within the range of 5 × 10 4 eV without adjusting any parameters. This approximation will be applied to more complex bremsstrahlung such as an X‐ray tube. Copyright © 2012 John Wiley & Sons, Ltd.