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首页> 外文期刊>EPJ Web of Conferences >Interactions of Cosmic Rays in the primary energy range (0.1-1) PeV studied by the ARGO-YBJ Experiment
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Interactions of Cosmic Rays in the primary energy range (0.1-1) PeV studied by the ARGO-YBJ Experiment

机译：通过ARGO-YBJ实验研究的一次能量范围（0.1-1）PeV中的宇宙射线相互作用

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摘要

The ARGO-YBJ detector layout, features and location offer a unique possibility for a detailed study of several characteristics of the hadronic component of the cosmic ray flux in an energy range hardly accessed by direct measurements. The proton-air cross section has already been measured by ARGO-YBJ in an energy region up to ~ 100 TeV where the primary cosmic ray composition is sufficiently well known for that measure to be unbiased. The analog readout of the RPC signals now provides new tools to measure the lateral distribution of particle density (LDF) as close as a few meters from the core and to investigate with unprecedented resolution the shower time structure. This allows to extend the hadronic interaction and mass composition studies up to ~PeV energies in the laboratory rest frame. Moreover, it is shown that the LDF of detected showers can be properly described, even very close to the shower axis, by a NKG-like function, whose shape parameter is clearly related to the shower age and can be used for studying the mass composition of cosmic rays.
机译：ARGO-YBJ探测器的布局，特征和位置为详细研究宇宙射线通量的强子成分在直接测量难以达到的能量范围内的几个特性提供了独特的可能性。质子空气的横截面已经由ARGO-YBJ在高达〜100 TeV的能量区域中进行了测量，在该区域中，众所周知的主要宇宙射线成分对于该测量是无偏的。 RPC信号的模拟读数现在提供了新的工具，可测量距离岩心仅几米的颗粒密度（LDF）的横向分布，并以前所未有的分辨率研究喷淋时间结构。这允许将强子相互作用和质量组成研究扩展到实验室静息框架中的〜PeV能量。此外，还表明，通过类似NKG的函数，即使在非常接近淋浴轴线的地方，也可以正确地描述检测到的淋浴的LDF，其形状参数与淋浴年龄明显相关，可用于研究质量成分宇宙射线。

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