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Regensburg 2007 – scientific programme

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EP: Fachverband Extraterrestrische Physik

EP 10: Poster

EP 10.5: Poster

Wednesday, March 28, 2007, 18:00–20:00, H46

CsI(Tl) scintillation crystal for the RAD/MSL instrument — •Cesar Martin, Stephan Böttcher, Eckart Böhm, Sönke Burmeister, Rudolf Beaujean, Onno Kortmann, and Robert Wimmer-Schweingruber — Institut für Experimentelle und Angewandte Physik, Christian-Albrecht-Universität zu Kiel, Germany

RAD, the radiation assesment detector onboard the NASA's Mars Science Laboratory rover mission is designed to detect the radiation environment on the Mars surface. It will be capable of detecting energetic charged particle (Z=1-26) with energies up to 100 MeV/amu, neutral particles (neutrons and gammas) with energies up to 100 MeV and electrons with energies up to 10 MeV. The heart of the RAD instrument is a calorimeter based on a CsI(Tl) scintillation crystal. The purpose of this study is to establish different parameters in order to select inorganic scintillators for space missions taking into account the activator concentration, light yield temperature dependence, quenching effects, alpha/gamma ratio and shaping times. We will present results on the dependences we have found for several CsI(Tl) crystals with different activator concentrations.

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