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Applications of Photonuclear Physics for International Safeguards and Security
M. S. Johnson,J. M. Hall,D. P. McNabb,J. L. McFarland,E. B. Norman,W. Bertozzi,S. E. Korbly,R. J. Ledoux,W. H. Park 한국물리학회 2011 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.59 No.23
Studies of nuclear resonance fluorescence based applications are presented. Important for these applications are data for isotopes such as ^(239)Pu. Nuclear resonance fluorescence measurements of ^(239)Pu were performed at the free electron laser facility at UC Santa Barbara using photons from a bremsstrahlung beam with an endpoint energies between 4.0 MeV and 5.5 MeV. Though no discrete states with significant confidence level were measured, we have excluded the region above 27(3) eV-barns, or 4-sigma, where we would expect only a small chance of false positives. Details of the measurements and the results are presented here.
Measurements of Inelastic Neutron Scattering at 96 MeV from Carbon, Iron, Yttriumand Lead
A. Ohrn,C. Gustavsson,M. Blann,V. Blideanu,J. Blomgren,S. Chiba,H. Duarte,F. Haddad,C. Kalbach,J. Klug,A. Koning,C. Le brun,C. Lebrun,F. -R. Lecolley,X. Ledoux,N. Marie-noury,P. Mermod,L. Nilsson,M. O 한국물리학회 2011 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.59 No.23
Inelastic neutron scattering for ^(12)C, ^(56)Fe, ^(89)Y and ^(208)Pb have been measured at 96 MeV at the The Svedberg Laboratory in Uppsala and double-differential cross sections are reported. Data cover an excitation energy range of 0-45 MeV and the angular intervals are 28 - 58˚ for ^(12)C, 26 - 65˚ for ^(56)Fe and 26 - 52˚ for ^(89)Y and ^(208)Pb. In this experiment, neutron detection is based on conversion to protons in an active scintillator converter. An analysis technique in which the neutron spectra have been obtained through a folding procedure using the response of the detector system has been used. The results are compared to and are in reasonable agreement with several model predictions and with inelastic neutron scattering data at 65 MeV from University of California, Davis, USA.