Abstracts and Available Papers Presented at the
1999 International RERTR Meeting

Development of Annular Targets for ⁹⁹Mo Production

C. Conner, E. F. Lewandowski, J. L. Snelgrove,
M. W. Liberatore, D. E. Walker, T. C. Wiencek,
D. J. McGann, G. L. Hofman, and G. F. Vandegrift
Argonne National Laboratory
9700 S. Cass Avenue
Argonne, IL  60439, USA

ABSTRACT

During 1999, significant progress was made in the development of a low-enriched uranium (LEU) target for production of ⁹⁹Mo.  Successful conversion requires an inexpensive, reliable target.  To keep the target geometry the same when changing from high-enriched uranium (HEU) to LEU targets, a denser form of uranium is required in order to increase the amount of uranium per target by a factor of approximately five.  Targets containing LEU in the form of a metal foil are being developed for producing ⁹⁹Mo from the fissioning of ²³⁵U.  A new annular target was developed this year, and seven targets were irradiated in the Indonesian RSG-GAS reactor.  Results of development of this annular target and its performance during irradiation are described

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