论文标题
模拟冰中CR空气淋浴芯的传播
Simulation of the propagation of CR air shower cores in ice
论文作者
论文摘要
目前，正在探索新的无线电检测技术，以检测到极性冰相互作用的PEV量表之外的天体中微子。由于无线电波在介质中的衰减长度很长，因此可以预期，这种仪器也将对宇宙射线阵雨的无线电发射敏感。此外，碰到高空冰层的宇宙射线空气阵雨将引发冰粒粒子级联反应，也会导致无线电发射。我们使用Corsika Monte Carlo Code和Geant4 Simulation Toolkit的组合，介绍了这些宇宙射线诱导的粒子级联反应的详细模拟的第一个结果。我们概述了此类粒子级联的一般特征，并根据纵向和横向粒子分布的Xmax表示参数化。我们通过使用Askaryan无线电发射以及使用雷达反射技术来讨论观察冰粒层级联的可行性。基于这些结果，我们发现来自In-In-In-In-In-In-In-In-In-In-In-In-In-In-In-In-In-In-In-In-Intion信号将与中微子信号非常相似。这意味着要在寻找中微子候选者时对这些事件进行彻底的了解，而它也有望是一个有趣的原位自然校准来源。
Currently new radio detection techniques are being explored to detect astrophysical neutrinos beyond the PeV scale interacting in polar ice. Due to the long attenuation length of radio waves in a medium, it can be expected that such instruments will also be sensitive to the radio emission of cosmic ray air showers. Furthermore, cosmic ray air showers hitting a high-altitude layer of ice will initiate an in-ice particle cascade, also leading to radio emission. We present the first results of detailed simulations of the in-ice continuation of these cosmic-ray-induced particle cascades, using a combination of the CORSIKA Monte Carlo code and the Geant4 simulation toolkit. We give an overview of the general features of such particle cascades and present a parameterization in terms of Xmax of the longitudinal and lateral particle distributions. We discuss the feasibility of observing the in-ice particle cascades, both through the detection of the Askaryan radio emission as well as by using the RADAR reflection technique. Based on these results we find that the expected signals from the continuation of in-ice cosmic-ray induced particle cascades will be very similar to neutrino signals. This means a thorough understanding of these events is necessary in the search for neutrino candidates, while it also promises an interesting in-situ natural calibration source.
