Measurement of the cosmic ray rate as a function of the altitude and atmospheric variables using a portable detector
M.I. Martínez Hernández, E. Moreno*, R. Palomino Merino, M. Rodriguez Cahuatzi and G. Tejeda Muñoz
August 16, 2017
August 03, 2018
The secondary flow of particles produced in the atmosphere by galactic and extragalactic primary cosmic rays is affected by the Earth’s magnetic field and by atmospheric variables such as pressure and temperature. In this work measurements of the cosmic ray rate obtained with three counting detectors are shown. The detectors consist of three plastic scintillators coupled to photomultiplier tubes. The output pulses from the photomultiplier tubes were discriminated and counted by a custom data acquisition board. Measurement of the altitude and atmospheric pressure was made with a minimum system (raspberry Pi). Correlations between the measured rate of particles with altitude and pressure are presented for two scintillator plastics made at the laboratory and one commercial sample. Measurements were made at several altitudes from 0 m.a.s.l., in the state of Veracruz, Mexico up to 4530 m.a.s.l. at the top of the Sierra Negra mountain.
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