A spectrometer for double-differential neutron-emission cross section measurements in the energy range 1.6 to 16 MeV |
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| Affiliation: | 1. Department of Mechanical and Nuclear Engineering, Pennsylvania State University, University Park, PA 16802, USA;2. Department of Nuclear Engineering and Radiological Sciences, University of Michigan, Ann Arbor, MI 48109, USA;3. Pacific Northwest National Laboratory, Richland, WA 99354, USA;1. Dep. of Physics, National Technical University of Athens, Greece;2. European Organisation for Nuclear Research (CERN), Geneva, Switzerland;3. Istituto Nazionale di Fisica Nucleare (INFN) - Sezione di Bari, Bari, Italy;4. Commissariat à l’Énergie Atomique (CEA) Saclay - Irfu, Gif-sur-Yvette, France;5. Universidade de Santiago de Compostela, Spain;6. Universidad de Sevilla, Spain;7. Centre National de la Recherche Scientifique/IN2P3 - IPN, Orsay, France;8. www.cern.ch/ntof;1. Department of Nuclear Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China;2. Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou 215021, China;1. Los Alamos National Laboratory, Los Alamos, NM 87545, United States;2. Colorado School of Mines, Golden, CO 80401, United States;3. University of New Mexico, Albuquerque, NM 87131, United States |
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| Abstract: | A neutron spectrometer for the measurement of double-differential neutron-emission cross sections has been set up.An electron linac (GELINA) is used as a pulsed white neutron source. The energy of the incident neutrons is determined by the time-of-flight method. The secondary neutron spectra are determined by unfolding the pulse-height distributions observed in eight NE213-scintillators surrounding the sample.The measured spectra are normalised to the shape of the incident neutron flux measured with a 235U-fission chamber, and afterwards converted to absolute cross sections using as standard the carbon differential elastic scattering cross section below 2 MeV. |
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