Study of the time-differentiated particle flux density at various distances from EAS axis

Details Study of the time-differentiated particle flux density at various distances from EAS axis Study of the time-differentiated particle flux density at various distances from EAS axis

Aug 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985icrc....7..363a&link_type=abstract

In NASA. Goddard Space Flight Center 19th Intern. Cosmic Ray Conf., Vol. 7 p 363-366 (SEE N85-35968 24-93)

Computer Science

1

Cosmic Ray Showers, Maximum Likelihood Estimates, Microprocessors, Particle Flux Density, Photonuclear Reactions, Root-Mean-Square Errors, Scintillation Counters, Time Dependence, Charged Particles, Electrons, Lorentz Force, Mesons, Muons, Statistical Analysis

Scientific paper

The EAS time structure is studied using the enlarged EAS array of the Moscow State University. The time measurements are made using 22 scintillators which form 13 rectanges of 180x190 sq m size covering the entire array area. The array is triggered by a signal of 4-fold coincidences of the pulses from the detectors forming each of the rectangles. The data were obtained during 2200 hours of the array operation in 1984. A total of 816 showers, to which at least 14 of 22 scintillator detectors responded, were selected among all those detected. The coordinates of the EAS axis in the observation plane and the EAS sizes were determined by the maximum likelihood method using a computer on the assumption that the electron LDF is the NKG form. A total of 492 showers in the interval of EAS size Ne = 5x10 to the 6th power - 2x10 to the 8th power (N bar e = 1.7x 10 to the 7th power) with zenith angles theta or = 45 deg and axes within the array are analyzed.

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