The high-efficiency spectroscopy setup at.

Authors :: Löher, B.
Derya, V.
Aumann, T.
Beller, J.
Cooper, N.
Duchêne, M.
Endres, J.
Fiori, E.
Isaak, J.
Kelley, J.
Knörzer, M.
Pietralla, N.
Romig, C.
Savran, D.
Scheck, M.
Scheit, H.
Silva, J.
Tonchev, A.
Tornow, W.
Weller, H.
Source :: Nuclear Instruments & Methods in Physics Research Section A. Sep2013, Vol. 723, p136-142. 7p.
Publication Year :: 2013
Abstract: Abstract: The existing Nuclear Resonance Fluorescence (NRF) setup at the facility at the Triangle Universities Nuclear Laboratory at Duke University has been extended in order to perform coincidence experiments. The new setup combines large volume detectors and high resolution HPGe detectors in a very close geometry to offer high efficiency, high energy resolution as well as high count rate capabilities at the same time. The combination of a highly efficient spectroscopy setup with the mono-energetic high-intensity photon beam of provides a worldwide unique experimental facility to investigate the pattern of dipole excitations in atomic nuclei. The performance of the new setup has been assessed by studying the nucleus 32S at 8.125MeV beam energy. The relative branching ratio from the 1+ level at 8125.4keV to the first excited 2+ state was determined to 15.7(3)%. [Copyright &y& Elsevier]