Bochum 2009 – wissenschaftliches Programm
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HK: Fachverband Hadronen und Kerne
HK 54: Nuclear Physics Applications
HK 54.3: Vortrag
Mittwoch, 18. März 2009, 15:00–15:15, H-ZO 100
First Measurements of Inelastic Neutron Scattering at nELBE — •Roland Beyer1, Evert Birgersson1, Eckart Grosse1,2, Roland Hannaske1, Arnd R. Junghans1, Andrija Matic1, Ralf Nolte3, Klaus-Dieter Schilling1, Ronald Schwengner1, and Andreas Wagner1 — 1FZ Dresden-Rossendorf, PF 510119, 01314 Dresden,Germany — 2TU Dresden, 01062 Dresden, Germany — 3PTB Braunschweig,Bundesallee 100, 38116 Braunschweig, Germany
At the nELBE facility [1] at Forschungszentrum Dresden-Rossendorf fast neutrons with kinetic energies of 0.1 to 10 MeV will be used to deliver nuclear data on neutron induced reactions necessary for the development of future nuclear transmutation facilities and new types of nuclear reactors. Electrons from the superconducting electron linac ELBE are shot onto a liquid lead target where they produce Bremsstrahlung which in turn liberates neutrons via (γ,n) reactions. The short pico-second pulse structure of the electron beam enables neutron time-of-flight experiments with very short flight paths of 4-7 meters obtaining energy resolutions of about 1 %.
First experiments on inelastic neutron scattering on 56Fe where performed using a double time-of-flight setup based on proton recoil detectors [2] and an array of 42 BaF2 crystals to detect the emitted photons and neutrons in coincidence. First results will be presented.
[1] E.Altstadt, C.Beckert, et al. Ann.Nucl.Energy 34 (2007) 39. [2] R.Beyer, E.Grosse, et al., NIM A 575 (2007) 449-455.