000K utf8 1100 $c2009 1500 eng 2050 urn:nbn:de:gbv:8-diss-37944 3000 Matthiä, Daniel 4000 Die Strahlungsumgebung in der Atmosphäre: ein numerischer Ansatz$hChristian-Albrechts-Universität zu Kiel [Matthiä, Daniel] 4000 The radiation environment in the lower atmosphere: a numerical approach$hChristian-Albrechts-Universität zu Kiel [Matthiä, Daniel] 4030 Kiel$nChristian-Albrechts-Universität zu Kiel 4209 The radiation exposure in the lower atmosphere caused by extraterrestrial sources is increasing with altitude. This phenomenon is caused by particles penetrating the atmosphere and producing secondary particles in interactions with atoms in the air. The main sources of the primary radiation are galactic cosmic rays from outside the solar system. Additionally, during short time periods particles may be accelerated during solar events causing increases in the particle intensities on ground which are measurable by Neutron Monitors in so-called Ground Level Enhancements (GLE). Investigating such GLEs and the related increase of the radiation exposure in the atmosphere and especially at aircraft altitudes is the topic of the present work. Detailed calculations of the transport of relevant primary particles through the Earth's magnetosphere and the atmosphere based on a Monte-Carlo technique were performed, and the resulting secondary particle fluxes and radiation exposures were determined. 4950 https://nbn-resolving.org/urn:nbn:de:gbv:8-diss-37944$xR$3Volltext$534 4961 https://macau.uni-kiel.de/receive/diss_mods_00003794 5051 530 5550 Dosimetrie 5550 Dosimetry 5550 Galactic Cosmic Rays 5550 Galaktische Kosmische Strahlung 5550 Radiation 5550 Solar Energetic Particles 5550 Solare Teilchen 5550 Strahlung