Jena 2013 – scientific programme
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K: Fachverband Kurzzeitphysik
K 3: Licht- und Strahlungsquellen, EUV-Quellen
K 3.3: Talk
Monday, February 25, 2013, 17:15–17:30, HS 4
Space Radiation Tests with Laser Plasma Accelerators — •Oliver Karger1,2, Thomas Königstein3, Georg Pretzler3, James B. Rosenzweig4, and Bernhard Hidding1,2,4 — 1Institut für Experimentalphysik, Universität Hamburg — 2DESY, FLA Arbeitsbereich Beschleunigerphysik, Hamburg — 3Institut für Laser- und Plasmaphysik, Heinrich-Heine-Universität Düsseldorf — 4Department of Physics and Astronomy, University of California, Los Angeles
Ionizing radiation in the Van-Allen belt is a substantial hazard for electronic components aboard spacecrafts in Earth orbit and on missions to other planets with a magnetosphere. Hence all radiation sensitive components have to be tested thoroughly as regards their radiation restistivity before any mission. In stark contrast to conventional accelerators such as linacs or cyclotrons, laser-plasma accelerator can accurately reproduce the radiation belt flux, and therefore provide more meaningful testing scenarios. In proof-of-concept projects, seed funded by European Space Agency, laser-plasma-interaction with solids was used to reproduce the radioation belt electrons and electronic componetns were irradiated. The intensity dependence of the electron temperature and the spatial distribution of emission was analyzed. Due to the high electron flux the daily dose of 3 · 1012 electrons/cm2 in a typical orbit of a navigation satellite can be reached within 140 seconds. Today’s state-of-the-art testing methods would need several hours to apply the same dose.
This talk presents the results of the measurments and the further development.