On the High Energy Soft Components at 2770m Altitude

概要

論文の詳細を見る
An apparatus consisting of GM-counter hodoscopes and an ionization chamber with large area was used to measure cascade showers initiated by electrons and photons at 2770m altitude (Mt. Norikura). The number of shower particles deduced from the pulse height of the ionization chamber was converted into energy of the electron (or photon) initiating the shower. The results show that, in the energy range of 2-20 Bev, i) the zenith angle distribution of electrons is represented by cos^5θ, ii) the differential energy spectra can be represented by a power law of the form E^<-γ> with γ of 2.90±0.05 and 2.83±0.05 for electrons and photons respectively, and iii) upper limit of the ratio of the number of electrons to that of photons is 1.1±0.1. The present results were compared with those obtained near sea level and the origin of the soft component was also discussed.
社団法人日本物理学会の論文
1960-08-05