Observation and research on cosmic ray muons and solar modulation effect based on plastic scintillator detector
Wang Dexin, Zhang Rui, Yu Dekang, Na Hui, Yao Zhangha, Wu Linghe, Zhang Suyalatu, Liang Tairan, Huang Meirong, Wang Zhilong, Bai Yu, Huang Yongshun, Yang Xue, Zhang Jiawen, Liu Mengdi, Ma Qiang, Yu Jing, Ji Xiuyan, Yu Yiliqi, Shao Xuepeng

TL;DR
This study uses a plastic scintillator detector to analyze cosmic ray muons and their solar modulation effects, revealing diurnal variations linked to solar activity over a three-month period.
Contribution
It introduces a dual-end coincidence measurement technique with plastic scintillators to effectively study muon spectra and solar modulation effects.
Findings
Pronounced diurnal variation in muon count rates
Reduction in muon flux between 8:00 AM and 1:00 PM
Correlation with solar activity and comparison with Yangbajing data
Abstract
Cosmic rays, originating from stars, supernovae, and other astrophysical sources, are composed of high-energy particles that enter Earths atmosphere. Upon interaction with atmospheric nuclei, these primary cosmic rays generate secondary particles, including neutrons, electrons, and muons, with muons constituting a dominant component at ground level. Muons, due to their relative abundance, stability, and well-characterized energy loss mechanisms, serve as critical probes for investigating the fundamental properties of cosmic rays. Studies of muon energy distribution, diurnal anisotropy, and their modulation by solar activity provide critical insights into the mechanism of particle acceleration in cosmic ray sources and the effects of solar and atmospheric.This study aims to characterize the counting spectra and anisotropic properties of cosmic ray muons by using a plastic scintillator…
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