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Bochum 2009 – scientific programme

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HK: Fachverband Hadronen und Kerne

HK 50: Nuclear Astrophysics

HK 50.5: Talk

Wednesday, March 18, 2009, 15:15–15:30, H-ZO 60

Efficiency calibration of the ELBE nuclear resonance fluorescence setup using a proton beam — •Erik Trompler1, Daniel Bemmerer1, Roland Beyer1, Carlo Broggini2, Antonio Caciolli2, Martin Erhard1, Zsolt Fülöp3, Eckart Grosse1, György Gyürky3, Roland Hannaske1, Arnd Rudolf Junghans1, Michele Marta1, Roberto Menegazzo2, Chithra Nair1, Roland Schwengner1, Tamas Szücs3, Andreas Wagner1, and Dmitry Yakorev11Forschungszentrum Dresden-Rossendorf (FZD), Dresden, Germany — 2INFN Sezione di Padova, Padova, Italy — 3ATOMKI, Debrecen, Hungary

The nuclear resonance fluorescence (NRF) setup at ELBE uses bremsstrahlung with endpoint energies up to 20 MeV. The setup consists of four 100% high-purity germanium detectors, each surrounded by a BGO escape-suppression shield and a lead collimator. The detection efficiency up to Eγ = 12 MeV has been determined using the proton beam from the FZD Tandetron and well-known resonances in the 11B(p,γ)12C, 14N(p,γ)15O, and 27Al(p,γ)28Si reactions. The deduced efficiency curve allows to check efficiency curves calculated with GEANT. Future photon-scattering work can be carried out with improved precision at high energy. — This work has been supported in part by the European Union (FP6 AIM RITA 025646).

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