Transmutation of copper in FFTF and starfire

Technical Report · Thu Dec 31 04:00:00 EST 1992

OSTI ID:139204

Garner, F A; Greenwood, L R ^[1]; Mann, F M

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1. Pacific Northwest Lab., Richland, VA (United States)

Calculations of the transmutation of pure copper in the recent MOTA-2A out-of-core experiment yield somewhat different values than expected from previous calculations for earlier MOTA in-core experiments. The differences arise not only from position-dependent spectral variations but also from changes in neutron flux and spectrum associated with the placement of the CDE experiment in FFTF. In addition, there has been a re-evaluation of the cross-sections for transmutation. The resulting differences between the current and earlier predictions for the original FFTF core loading are that the zinc concentration is significantly higher and the nickel concentration is somewhat lower in the current calculation. Relative to the original core loading, however, the production rate per dpa of both nickel and zinc in the MOTA-2A experiment in the current core loading is increased due to spectral softening arising from both the new CDE core and the out-of-core location. Although the nickel transmutation rate increases significantly in the STARFIRE first wall neutron spectrum, the nickel-to-zinc transmutation ratio is also reduced compared to that of previous calculations, with the difference arising only from the re-evaluation of the transmutation cross-sections.

• Research Organization: Oak Ridge National Lab., TN (United States)
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 139204
• Report Number(s): DOE/ER--0313/13; ORNL/M--2722; ON: DE93013462
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
COPPER
CROSS SECTIONS
DISPLACEMENT RATES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
IRRADIATION
NICKEL
PHYSICAL RADIATION EFFECTS
PROGRESS REPORT
THERMONUCLEAR REACTOR MATERIALS
TRANSMUTATION
ZINC