Stuttgart 2012 – wissenschaftliches Programm
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EP: Fachverband Extraterrestrische Physik
EP 2: International Space Weather Initiative
EP 2.4: Vortrag
Dienstag, 13. März 2012, 11:30–11:45, V55.02
Altitude Dependence of the Dose Rate From Ground up to the Stratosphere. — •T. Möller1, T. Berger2, S. Burmeister1, B. Ehresmann1, B. Heber1, J. Labrenz1, L. Panitzsch1, and R.F. Wimmer-Schweinguber1 — 1IEAP, Christian-Albrechts-University Kiel, Germany — 2Institute of Aerospace Medicine, Radiation Biology, DLR, Cologne, Germany
The Earth is permanently exposed to energetic particle radiation from cosmic rays. This cosmic particle radiation, together with its secondary particles produced in the Earth's atmosphere, produces a natural radiation field inside the atmosphere. The radiation exposure is dependent on altitude and geomagnetic latitude as it is modulated by the Earth's magnetic field.In the future, it is planned to use supersonic aircraft, with operation altitudes between 20 and 25km which is significantly higher than common aircraft altitudes. At these altitudes the radiation level is higher and rich a maximum due to production of secondary particles. Therefore it is important to know which kind of radiation level will be expected in these altitudes. For this investigation a particle telescope consisting of four segmented silicon semiconductor detectors was developed. Due to the arrangement of the detectors, it is possible to separate neutral and charged particles. Therefore the dose rates induced by charged and neutral particles can be determined seperately. The Flight Radiation Environment Detector (FRED) conducted measurements onboard a stratospheric balloon in altitudes up to 25 km as part of the BEXUS programme.First results of the measurements will be presented.