Thème : Atmospheric cosmic rays.
Présentation : Cosmic rays are energetic particles that are found in space and filter through our atmosphere. As primary cosmic rays enter the Earth's atmosphere, they are very likely to collide with air nuclei. These interactions result in the production of secondary cosmic rays, mainly pions but also kaons and other particles. Cosmic rays have interested scientists for many different reasons. They come from all directions in space, and the origination of many of these cosmic rays is unknown. Cosmic rays also have an extreme energy range of incident particles, which have allowed physicists to study aspects of their field that can not be studied in any other way. Scientists have postulated that cosmic rays can affect the earth by causing changes in weather. Cosmic rays can cause clouds to form in the upper atmosphere, after the particles collide with other atmospheric particles in our troposphere. The process of a cosmic ray particle colliding with particles in our atmosphere and disintegrating into smaller pions, muons, and the like, is called a cosmic ray shower. My research deals with extreme energy cosmic rays and fluorescence detection using space detector.