Multiplicity measurements on the IGY and NM64 neutron monitors

Abstract

Preliminary results are given of the analysis of the continuous recordings of the detected multiplicity distribution obtained at the Uppsala IGY monitor and at the Rome supermonitor in the first months of 1967. The relative frequencies and the attenuation coefficients of the individual multiplicities as measured at both monitors are compared. The time changes of the multiplicity distribution on the occasion of substantial primary spectral variations are studied.