Il Nuovo Cimento C

, Volume 2, Issue 4, pp 473–487 | Cite as

Integral and differential absolute intensity measurements of cosmic-ray muons below 1 GeV

  • B. Baschiera
  • G. Basini
  • H. Bilokon
  • B. D'Ettorre Piazzoli
  • G. Mannocchi
  • C. Castagnoli
  • P. Picchi
Article
Received:

Summary

Absolute differential and integral muon intensities below 1 Ge V/c have been measured with a flash-tube range spectrograph in which stopping muons are identified by the decay sequence. The differential intensities at 0.314 GeV/c and 0.805 GeV/c are (3.25±0.17)·10−3 cm−2 sr−1·s−1 (GeV/c)−1 and (3.60±0.18)·10−3 cm−2 sr−1 s−1 (GeV/c)−1, respectively,i.e. 16% and 33% higher than that of Rossi. These measurements confirm the rencent results of other authors according to which the Rossi reference point at 1 GeV/c is too low of about 25%. Our integral measurements at 0.457 GeV/c and 0.918 GeV/c support this evidence.

Резюме

Измерены абсолютные дифферецниальные и интегральные интенсивности мюонов ниже 1 ГэB/c, используя спектрограф, в котором остановившиеся мюоны идентифицируются по цепочке распадов. Диффенциальные интенсивностн при 0.314 ГэB/c и 0.805 ГэB/c соответственно составляют (3.25±0.17)·10−3 см−2 ср−1 с−1 (ГэВ/с)−1 и (3.60±0.18)·10−3 см−2 ср−1 с−1 (ГэВ/с)−1, т.е. нв 16% и 33% выше результатов Росси. Проведенные измерения подтвершдают недавние результаты других авторов, согласно которым точка отсчета Росси при 1 ГэВ/с расподожена ниже на 25%. Наши интегральные измерения при 0.457 ГэВ/с и 0.918 ГэВ/с подтверждают этот результат.

Keywords

Liquid Scintillation Counter Plastic Scintillator Liquid Scintillator Muon Decay Differential Measurement 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Riassunto

Con uno spettrografo a range di tubi a flash sono state misurate le intensità differenziali e integrali sotto 1 GeV/c rivelando la catena del decadimento del muone. Le intensità differenziali a 0.314 GeV/c e 0.805 GeV/c sono rispettivamente (3.25±0.17)·10−3 cm2 sr−1 s−1 (GeV/c)−1 e (3.60±0.18)·10−3 cm−2 sr−1 s−1 (GeV/c)−1, cioè 16% e 33% più alte di quella di Rossi. Queste misure confermano i recenti risultati di altri autori secondo i quali il punto di riferimento di Rossi a 1 GeV/c è più basso di∼25%. Le nostre misure d'intensità integrale a 0.457 GeV/c e 0.918 GeV/c sostengono queste evidenze.

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Copyright information

© Societá Italiana di Fisica 1979

Authors and Affiliations

  • B. Baschiera
    • 1
  • G. Basini
    • 1
    • 2
  • H. Bilokon
    • 1
    • 2
  • B. D'Ettorre Piazzoli
    • 1
    • 2
  • G. Mannocchi
    • 1
    • 2
  • C. Castagnoli
    • 3
  • P. Picchi
    • 2
    • 3
  1. 1.Laboratorio di Cosmogeofisica del CNRTorino
  2. 2.Laboratori Nazionali di FrascatiIstituto Nazionale di Fisica NucleareFrascati (Roma)
  3. 3.Istituto di Fisica Generale dell' UniversitàTorino

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