Study on Multifractal Structure of the Distribution Fluctuation of Secondary Perticles in the Core Region of EAS

  • The differences of space distributions and time profiles between the γ-ray and proton induced shower particles are studied using Monte Carlo simulation data. The multifractal analysis is performed with the G-moment method for the distribution fluctuation of secondary particles near the core of showers induced by γ-rays and protons. From the spectrum functions of γ and proton events, it is seen that this method can be adopted as a basis for the γ/proton separation. It is shown that the separation of γ and proton can be achieved with a good efficiency in the energy region of 1—10TeV.
  • [1] Jhompson P J. Astrophys. J. Suppl., 1993,86:6292 Reynolds P T et al. Astroparticle Physics,1995,3:137 3 The ARGO Collaboration, Proc.25th ICRC, 1997,5:2694 Faleiro E et al. Proc.25th ICRC, 1997,6:2615 Lidvansky A S. Pine. 25th ICRC, 1997,6: 169 6 Kempa J. J. Phys. G.,1994,20:215 7 Kempa J. Proc. 24th ICRC, 1995, 1:3178 Kasahara K. Proc 24th ICRC, 1995, 1: 399 9 Brun R et al. GEANT User's Guide, CERN Program Lib,1991 10 Halsey T C. Phys. Rev.,1986,A33: 1141 11 Paladin G et al. Phys. Rep.,1987,156: 147 12 Chiu C B et al. Phys. Rev.,1991,D43:100
  • [1] Jhompson P J. Astrophys. J. Suppl., 1993,86:6292 Reynolds P T et al. Astroparticle Physics,1995,3:137 3 The ARGO Collaboration, Proc.25th ICRC, 1997,5:2694 Faleiro E et al. Proc.25th ICRC, 1997,6:2615 Lidvansky A S. Pine. 25th ICRC, 1997,6: 169 6 Kempa J. J. Phys. G.,1994,20:215 7 Kempa J. Proc. 24th ICRC, 1995, 1:3178 Kasahara K. Proc 24th ICRC, 1995, 1: 399 9 Brun R et al. GEANT User's Guide, CERN Program Lib,1991 10 Halsey T C. Phys. Rev.,1986,A33: 1141 11 Paladin G et al. Phys. Rep.,1987,156: 147 12 Chiu C B et al. Phys. Rev.,1991,D43:100
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KONG FanMin, FENG CunFeng, ZHANG XueYao, XUE Liang, FU Yu, LI JinYu, ZHANG NaiJian, HE Mao, WANG ChengRui and TAN YouHeng. Study on Multifractal Structure of the Distribution Fluctuation of Secondary Perticles in the Core Region of EAS[J]. Chinese Physics C, 2000, 24(4): 279-284.
KONG FanMin, FENG CunFeng, ZHANG XueYao, XUE Liang, FU Yu, LI JinYu, ZHANG NaiJian, HE Mao, WANG ChengRui and TAN YouHeng. Study on Multifractal Structure of the Distribution Fluctuation of Secondary Perticles in the Core Region of EAS[J]. Chinese Physics C, 2000, 24(4): 279-284. shu
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Received: 1999-03-09
Revised: 1900-01-01
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Study on Multifractal Structure of the Distribution Fluctuation of Secondary Perticles in the Core Region of EAS

    Corresponding author: KONG FanMin,
  • High Energy Physics Group,Shandong University, Jinan 250100, China1 Institute of High Energy Physics, The Chinese Academy of Sciences,Beijing 100079, China

Abstract: The differences of space distributions and time profiles between the γ-ray and proton induced shower particles are studied using Monte Carlo simulation data. The multifractal analysis is performed with the G-moment method for the distribution fluctuation of secondary particles near the core of showers induced by γ-rays and protons. From the spectrum functions of γ and proton events, it is seen that this method can be adopted as a basis for the γ/proton separation. It is shown that the separation of γ and proton can be achieved with a good efficiency in the energy region of 1—10TeV.

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