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The Gaisser–Hillas function is used in astroparticle physics. It parameterizes the longitudinal particle density in a cosmic ray air shower. The function was proposed in 1977 by Thomas K. Gaisser and Anthony M. Hillas. The number of particles as a function of traversed atmospheric depth is expressed as : where is maximum number of particles observed at depth , and and are primary mass and energy dependent parameters. Using substitutions and the function can be written in an alternative one-parametric (''m'') form as : ==References == 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Gaisser–Hillas function」の詳細全文を読む スポンサード リンク
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