Covariance Analyses of Self-Shielding Factor and Its Temperature Gradient for Uranium-238 Neutron Capture Reaction

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概要

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• Covariances of the self-shielding factor and its temperature gradient for the uranium-238 neutron capture reaction have been evaluated from the resonance parameter covariance matrix and the sensitivity of the self-shielding factor and its temperature gradient to the resonance parameters. The resonance parameters and their covariance matrix for uranium-238 were taken from JENDL-3.3, while the sensitivity coefficients were calculated by varying resonance parameters and temperature. A set of computer code modules has been developed for the calculation of the sensitivity coefficients at numerous resonance levels. The present result shows that the correlation among resonance parameters yields a substantial contribution to the standard deviations of the self-shielding factor and its temperature gradient. In addition to the standard deviations of these quantities, their correlation matrices in the JFS-3 70 group structure are also obtained.

• 社団法人 日本原子力学会の論文
• 2008-03-25

著者

• Takano Hideki

  Nippon Advanced Information Service Co. Ltd.

• Zukeran Atsushi

  Nippon Advanced Information Service Co. Ltd.

• Zukeran Atsushi

  Energy Research Laboratory Hitachi Ltd.

• Chiba Go

  Reactor Physics Group Japan Atomic Energy Agency

• OTUKA Naohiko

  Nuclear Data Center, Japan Atomic Energy Agency

• ISHIKAWA Makoto

  Reactor Physics Analysis and Evaluation Group, Japan Atomic Energy Agency

• Otuka Naohiko

  Nuclear Data Center Japan Atomic Energy Agency

• Ishikawa Makoto

  Reactor Physics Analysis And Evaluation Group Japan Atomic Energy Agency

• Otsuka Naohiko

  Nuclear Data Center, Japan Atomic Energy Agency

関連論文

• Japanese Evaluated Nuclear Data Library Version 3 Revision-3 : JENDL-3.3
• Simultaneous Evaluation of Fission Cross Sections of Uranium and Platonium Isotopes for JENDL-3.3
• Re-evaluation of Nuclear Data of Fission Product Nuclides for JENDL-3.2
• Japanese Evaluated Nuclear Data Library Version 3 Revision-2 : JENDL-3. 2
• Covariance Analyses of Self-Shielding Factor and Its Temperature Gradient for Uranium-238 Neutron Capture Reaction
• JENDL-4.0 : A New Library for Nuclear Science and Engineering
• Uranium-235 Neutron Capture Cross Section at keV Energies
• Three-Dimensional Benchmark Tests of ENDF/B-VI for Thermal Reactor Core
• Monte carlo evaluation of VHTR cell calculational model with emphasis on resonance integral.

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