Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

EP: Fachverband Extraterrestrische Physik

EP 12: Near-Earth Space II

EP 12.4: Vortrag

Donnerstag, 23. März 2023, 16:45–17:00, ZEU/0160

Yield function of the DOSimetry TELescope (DOSTEL) count and dose rates aboard an aircraft — •Lisa Romaneehsen, Hanna Giese, Bernd Heber, Konstantin Herbst, and Sönke Burmeister — Christian-Albrechts-Universität Kiel

The Earth is continuously exposed to galactic cosmic rays. The magnetized solar wind in the heliosphere and the Earth’s magnetic field alters the flux of these particles. If cosmic rays hit the atmosphere, they can form secondary particles. The total flux measured within the atmosphere depends on the atmospheric density above the observer. Therefore, the ability of a particle to approach an aircraft depends on its energy, the altitude, and the position of the plane. The cutoff rigidity describes the latter.
The radiation detector of the detector system NAVIDOS (NAVIgation DOSimetry) is the DOSimetry Telescope (DOSTEL), measuring the count and dose rates in two semiconductor detectors. From 2008 to 2011, two instruments were installed in two aircraft. First, we corrected the data for pressure variation by normalizing them to one flight level and determined their dependence on the cutoff rigidity by fitting a Dorman function to the observation. The latter was used to compute the yield function, which describes the ratio of incoming primary cosmic rays, approximated by a force field solution, to the measured count and dose rate for a particular instrument.
We received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No 870405.