A comprehensive study of shower to shower fluctuations

被引：5
作者：
Hansen, P. M. [2 ]
Alvarez-Muniz, J. [1 ,3 ]
Vazquez, R. A. [1 ,3 ]
机构：
[1] Univ Santiago de Compostela, Fac Fis, Dipartimento Fis Particulas, Santiago De Compostela 15782, Spain
[2] Natl Univ La Plata, Fac Ciencias Exactas, Dept Fis, CONICET,IFLP, RA-1900 La Plata, Argentina
[3] Univ Santiago de Compostela, Fac Fis, IGFAE, Santiago De Compostela 15782, Spain
来源：
ASTROPARTICLE PHYSICS | 2011年 / 34卷 / 06期
关键词：
Cosmic rays; Extensive air showers; Ground detector; Simulation; Muon component; Electromagnetic component; EXTENSIVE AIR-SHOWERS; SIMULATION; SCALE;
D O I：
10.1016/j.astropartphys.2010.11.001
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
By means of Monte Carlo simulations of extensive air showers (EAS), we have performed a comprehensive study of the shower to shower fluctuations affecting the longitudinal and lateral development of EAS. We split the fluctuations into physical fluctuations and those induced by the thinning procedure customarily applied to simulate showers at EeV energies and above. We study the influence of thinning on the calculation of the shower to shower fluctuations in the simulations. For thinning levels larger than R-thin = 10(-5) - 10(-6), the determination of the shower to shower fluctuations is hampered by the artificial fluctuations induced by the thinning procedure. However, we show that shower to shower fluctuations can still be approximately estimated, and we provide expressions to calculate them. The influence of fluctuations of the depth of first interaction on the determination of shower to shower fluctuations is also addressed. (C) 2010 Elsevier B.V. All rights reserved.
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页码：503 / 512
页数：10
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