Neutron-capture cross-sections of244Cm and246Cm measured with an array of large germanium detectors in the ANNRI at J-PARC/MLF
Open Access
- 22 June 2012
- journal article
- research article
- Published by Taylor & Francis in Journal of Nuclear Science and Technology
- Vol. 49 (7) , 708-724
Abstract
The neutron neutron-capture cross cross-sections of 244Cm and 246Cm were measured by the time-of-flight method in the energy range of 1–300 300 eV with an array of large germanium detectors in the Accurate Neutron-Nucleus Reaction measurement InstrumentANNRI at Material and Life Science Experimental Facility (MLF) of the Japan Proton Accelerator Research ComplexJ-PARC/MLF. The 244Cm resonances at around 7.7 and 16.8 8 eV and the 246Cm resonances at around 4.3 and 15.3 3 eV were observed in the capture reactions for the first time. The uncertainties of the obtained cross cross-sections are 5.8% at the top of the first resonance of 244Cm and 6.6% at that of 246Cm. The rResonance analyses were performed for low-energy ones using the code SAMMY. The prompt γ-ray spectra of 244Cm and 246Cm were also obtained. Eight and five new prompt γ-ray emissions were observed in the 244Cm(n, γ) and 246Cm(n, γ) reactions, respectively.Keywords
This publication has 21 references indexed in Scilit:
- Measurements of Neutron-Capture Cross Sections of 244Cm and 246Cm at J-PARC/MLF/ANNRIJournal of the Korean Physical Society, 2011
- The 'Study on Nuclear Data by Using a High Intensity Pulsed Neutron Source for Advanced Nuclear System' Nuclear Data Project and the Characteristics of the Neutron Beam Line for the Capture Cross Section Experiments at J-PARCJournal of the Korean Physical Society, 2011
- JENDL-4.0: A New Library for Nuclear Science and EngineeringJournal of Nuclear Science and Technology, 2011
- Measurement of energy spectra and spatial distributions of neutron beams provided by the ANNRI beamline for capture cross-section measurements at the J-PARC/MLFNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2011
- Measurement of Neutron Capture Cross Section Ratios of244Cm Resonances Using NNRIJournal of Nuclear Science and Technology, 2010
- First neutron production utilizing J-PARC pulsed spallation neutron source JSNS and neutronic performance demonstratedNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2010
- Nuclear data study at J-PARC BL04Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2009
- Nuclear data sensitivity, uncertainty and target accuracy assessment for future nuclear systemsAnnals of Nuclear Energy, 2006
- Development of a Data Acquisition System for a Multiple Gamma-Ray Detection MethodAIP Conference Proceedings, 2005
- Analysis of the Fission and Capture Cross Sections of the Curium IsotopesPhysical Review C, 1971