Abstract

The results obtained by studying temporal distributions of particles of energy in excess of 5 GeV in extensive air showers (EAS) of energy above \(10^{15}\) eV at distances shorter than 200 m from the EAS axis with the aim of searches in data from the MSU EAS setup for delayed and advanced new particles that could arise in the interactions of primary cosmic rays in the Earth’s atmosphere are presented. These investigations were performed with the aid of an unshielded ground-based detector and an underground detector shielded by a ground layer 20 m.w.e. thick. It is shown that delayed particles having a delay time between 100 and 300 ns and an exponentially descending temporal distribution with an exponent of 120 ns exhibit a higher ionizing ability than relativistic muons. The flow of such particles is attenuated by the ground layer between the unshielded and shielded detectors by a factor of about 30. Particles moving ahead of the EAS disk were not detected in the present study. Properties of delayed particles are discussed. Special features of calibrations and auxiliary tests confirming data from the present measurements are analyzed.

中文翻译：

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在MSU EAS装置中搜索EAS介子流中超高能宇宙射线与地球大气相互作用中的延迟和高级粒子

摘要

通过研究能量大于\（10 ^ {15} \）的大风淋（EAS）中超过5 GeV的能量的时间分布而获得的结果提出了在距EAS轴短于200 m的距离处的eV的目的，目的是搜索MSU EAS设置中的数据，以寻找地球大气中主要宇宙射线相互作用中可能出现的延迟和先进的新粒子。这些研究是借助未屏蔽的地面探测器和被20兆瓦厚的接地层屏蔽的地下探测器进行的。结果表明，与相对论性介子相比，延迟时间在100到300 ns之间并且指数分布呈指数下降的时间分布（具有120 ns的指数）的延迟粒子具有更高的电离能力。此类颗粒的流动被未屏蔽和已屏蔽探测器之间的接地层衰减了大约30倍。在本研究中未检测到移动到EAS盘前方的颗粒。讨论了延迟颗粒的性质。分析校准和辅助测试的特殊功能，以确认当前测量的数据。