gamma detection - FNDA 2011

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Fast neutron inelastic scattering at the nELBE facility Kinematic calculations Seite 30 -Fe-56 (1.,2.,3. Level) (847, 2085, 2658 keV) -Fe-54 (1. Level) (1408 keV) -Fe-56 (2 x 1. Level) (1694 keV)
Fast neutron inelastic scattering at the nELBE facility Plastics efficiency Seite 34 Measurement at PTB: - Mono-energetic neutrons - Beyer et al., NIMA 575 (2007) 449 Measurement at HZDR: - nELBE spectrum - Relative to 235U fission chamber NEFF7: - well established code for neutron <strong>detection</strong> efficiency simulation - developed at PTB Modified NEFF7: - Cuboid detector geometry - Double sided readout - Scintillation light propagation and attenuation - PMT Quantum efficiency - Threshold = one photo electron per PMT Problems: In simulation: - Unknown light output function at low energy transfer In measurement: - Collimated beam at nELBE - Influence of lead shielding
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gamma detection - FNDA 2011

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