Mean characteristics of the process of multiple production at 1011–1012 eV

Abstract

The dependence of the mean characteristics of multiple production at 1011–1012 eV (i.e., [Formula: see text] = multiplicity of charged secondaries, [Formula: see text] = energy of secondaries in the c.m.s., σc = parameter of anisotropy) on the primary energy E0 is studied experimentally. The analysis is based on 73 interactions of cosmic-ray particles with LiH and C targets observed in two sets of experiments (Pamir and Tien-Shan). The main conclusions are as follows: (1) the dependence of [Formula: see text] on E0 is compatible with both a power function ns ~ E01/4[Formula: see text] and a logarithmic function ns ~ log E0 (theory of peripheral interactions); [Formula: see text] the increase of [Formula: see text] and σc with E0 is compatible with predictions of the fireball model; (3) in coordinates log tan θlab 10% of the interactions have a bimodal angular distribution.