Damghan University Press Iranian Journal of Astronomy and Astrophysics 2322-4924 9 2 2022 10 01 Recent Data of Extensive Air Showers Recorded by Alborz I Array and Their Detailed Analysis 135 147 342 10.22128/ijaa.2022.698.1151 EN Mahmud Bahmanabadi Physics Department, Sharif University of Technology, Tehran, Iran Mostafa Heydarizad Alborz Observatory‎, ‎Sharif University of Technology‎, ‎PO Box 11155-9161‎, ‎Tehran‎, ‎Iran Journal Article 2023 07 15 An array of five scintillation detectors has been installed in Sharif University of Technology to record extensive air showers. ‎‎‎By using the time lags of the secondary particles of air showers relative to each other and the location of each of these ‎particles‎ relative to the core of the shower, the arrival direction of the primary particle producing each air shower has been ‎obtained.‎<br /><br />‎‎These data show that the distribution of time intervals of successive events in all directions of arrival into‎ the atmosphere is a random distribution‎. The distribution of the time intervals between successive events in different ‎seasons‎ has also been obtained and the seasonal effect has been ‎investigated‎. The effects of the environment‎, ‎including temperature and pressure‎, on the cosmic ray count rate have been investigated‎. ‎The distribution of zenith and azimuth angles‎, ‎as well as‎ the ‎solar,‎ sidereal, and antisidereal time distributions of cosmic rays‎, ‎have been obtained‎. https://ijaa.du.ac.ir/article_342_122d6959964c024de4eae7f9c4f3c6c7.pdf