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Il Nuovo Cimento (1955-1965)

, Volume 14, Issue 6, pp 1356–1365 | Cite as

Size-spectrum of extensive air showers of the cosmic radiation

II. — Experimental results from a single scintillator
  • J. R. Green
  • J. R. Barcus
Article

Summary

The operation and calibration of a single scintillator of area 7.3 m2 is discussed. The integral spectrum of particles passing through the scintillator at 1575 m.s.l. has a logarithmic slope of — (1.514±0.022); from this it is deduced that the integral spectrum of extensive air showers whose sizes lie in the range from 105 to 108 particles is given byK(⩾N)=3.2·10−7 (N/106)−1.514 m−2 s−1 sr−1. Smaller events are identified with stars produced locally in the toluene of the scintillator; the integral spectrum of such events dissipatingE MeV in the scintillator is given byR(⩾E)=4.5·102E−2.76 min−1/g of toluene.

Riassunto

Si discute l’uso e la taratura di uno scintillatore di 7.3 m2 di area. Lo spettro integrale di particelle passanti attraverso lo scintillatore a 1575 m s.l.m. ha una inclinazione logaritmica di — (1.514±0.022); da questo si deduce che lo spettro integrale dei sciami estesi dell’aria, le cui dimensioni sono comprese fra 106 e 108 particelle, è dato daK(⩾N)=3.2·10−7 (N/106)−1.514 m−2 sr−1. Eventi minori vengono indicati da stelle prodotte localmente nel toluene dello scintillatore: lo spettro integrale di tali eventi, che dissipanoE MeV nello scintillatore, è dato daR(⩾E)=−4.5·102E−2,76 min−1/g di toluene.

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Copyright information

© Società Italiana di Fisica 1959

Authors and Affiliations

  • J. R. Green
    • 1
  • J. R. Barcus
    • 1
  1. 1.University of New MexicoAlbuquerque

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