The LENA (Low Energy Neutrino Astronomy) detector is a proposed large liquid-scintillator neutrino observatory. Its main physics goals are the detection of low-energy neutrinos from the Sun, from Supernovae, and the Earth and the search for proton decay. For this thesis, the fluorescence decay-time constants and the light-emission spectra of different scintillator mixtures have been investigated. All results are interpreted in terms of a microscopic model of the scintillation mechanism. Using the Geant4 toolkit, a simulation has been performed for the SUSY-favored decay channel p -> K+ neutrino. For the proton lifetime, a sensitivity of 4*10^34y can be achieved within 10y of measuring time. The impact of the scintillator optical properties on the proton-decay detection efficiency has also been studied.
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The LENA (Low Energy Neutrino Astronomy) detector is a proposed large liquid-scintillator neutrino observatory. Its main physics goals are the detection of low-energy neutrinos from the Sun, from Supernovae, and the Earth and the search for proton decay. For this thesis, the fluorescence decay-time constants and the light-emission spectra of different scintillator mixtures have been investigated. All results are interpreted in terms of a microscopic model of the scintillation mechanism. Using th...
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