Determination of the EAS Attenuation Length from Data of the ANI Experiment

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Using the EAS size spectra measured with the MAKET ANI array on Mt. Aragats, Armenia (3200m a.s.l.) in the range of the shower size 10^5 - 10^7 for different angles-of-incidence, the EAS attenuation length has been determined applying different analysis methods. The analysis is based on a data sample of 2.5*10^6 events collected in the period of June, 97 - April, 99. The results are compared with results deduced from data of the EAS TOP and KASCADE experiments.
9 pages, to appear in the ANI99 workshop proceedings, FZKA report Forschungszentrum Karlsruhe, ed. by A.Chilingarian, A.Haungs, H.Rebel and Kh.N.Sanosyan

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