Increase in the Absorption Length of Inclined Extensive Air Showers with Different Selection Types

Abstract

The dependence of the number of extensive air showers (EAS) on the zenith angle is obtained in groups with a constant solid-angle step with different election types at separations between stations of 500 and 1000 m by using the Yakutsk EAS array data. A bend point is formed at the zenith angle approximately of 50 deg. This point shifts with the increasing energy in the direction corresponding to the shift of the cascade-curve maximum depth with the variation of energy. The boundaries of change of these dependences obtained separately at the distances between stations of 500 and 1000 m are different that may be caused by the uncertainty of the lateral distribution function (LDF) used. Thereby, energies of showers detected by the stations with a different separation are not joined.