Mathematics – Probability
Scientific paper
Aug 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985icrc....7..207f&link_type=abstract
In NASA. Goddard Space Flight Center 19th Intern. Cosmic Ray Conf., Vol. 7 p 207-210 (SEE N85-35968 24-93)
Mathematics
Probability
Cerenkov Counters, Cosmic Ray Showers, Energy Spectra, Light Curve, Pulsed Radiation, Scintillation, Scintillation Counters, Signal To Noise Ratios
Scientific paper
The individual cascade curves of EAS with E0 10 to the 17th power eV/I to 3/ were studied by detection of EAS Cherenkov light pulses. The scintillators located at the center of the Yakutsk EAS array within a 500-m radius circle were used to select the showers and to determine the main EAS parameters. The individual cascade curves N(t) were obtained using the EAS Cherenkov light pulses satisfying the following requirements: (1) the signal-to-noise ratio fm/deltan 15, (2) the EAS axis-detector distance tau 350 m, (3) the zenith angle theta 30 deg, (4) the probability for EAS to be detected by scintillators W 0.8. Condition (1) arises from the desire to reduce the amplitude distortion of Cherenkov pulses due to noise and determines the range of EAS sizes, N(t). The resolution times of the Cherenkov pulse shape detectors are tau0 approx. 23 ns which results in distortion of a pulse during the process of the detection. The distortion of pulses due to the finiteness of tau0 value was estimated. It is shown that the rise time of pulse becomes greater as tau0.5/tau sub 0 ratio decreases.
Efimov N. N.
Fomin Yu A.
Grigoriev V. M.
Kalmykov G. B.
Khristiansen M. V.
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