Coherent Cherenkov radiation from cosmic-ray-induced air showers.
Coherent Cherenkov radiation from cosmic-ray-induced air showers.
复制标题
宇宙射线引起的空气簇射产生的相干切伦科夫辐射。
DOI：
--
复制
发表时间：
2011
影响因子：
8.6
通讯作者：
K. Werner
中科院分区：
文献类型：
--
作者：
K. D. Vries;van den Ad M Berg;O. Scholten;K. Werner
非常高能的宇宙射线进入地球大气层将产生一个等离子体云，几乎以光速移动。地球的磁场在这个云中感应出电流，这是发射相干电磁辐射的原因。我们建议寻找一种新的效应：由于空气的折射率，这种辐射在切伦科夫锥中被准直。为了表示与通常的切伦科夫辐射的区别，即，快速移动的电荷的辐射，我们称之为磁感应切伦科夫辐射。我们指出其签名和可能的实验验证。
Very energetic cosmic rays entering the atmosphere of Earth will create a plasma cloud moving with almost the speed of light. The magnetic field of Earth induces an electric current in this cloud which is responsible for the emission of coherent electromagnetic radiation. We propose to search for a new effect: Because of the index of refraction of air, this radiation is collimated in a Cherenkov cone. To express the difference from usual Cherenkov radiation, i.e., the emission from a fast-moving electric charge, we call this magnetically induced Cherenkov radiation. We indicate its signature and possible experimental verification.