A novel monolithic LEU foil target based on a PVD manufacturing process for 99Mo production via fission

Tobias Hollmer, Winfried Petry

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

99Mo is the most widely used radioactive isotope in nuclear medicine. Its main production route is the fission of uranium. A major challenge for a reliable supply is the conversion from highly enriched uranium (HEU) to low enriched uranium (LEU). A promising candidate to realize this conversion is the cylindrical LEU irradiation target. The target consists of a uranium foil encapsulated between two coaxial aluminum cladding cylinders. This target allows a separate processing of the irradiated uranium foil and the cladding when recovering the 99Mo. Thereby, both the costs and the volume of highly radioactive liquid waste are significantly reduced compared to conventional targets. The presented manufacturing process is based on the direct coating of the uranium on the inside of the outer cladding cylinder. This process was realized by a cylindrical magnetron enhanced physical vapor deposition (PVD) technique. The method features a highly automated process, a good quality of the resulting uranium foils and a high material utilization.

Original languageEnglish
Pages (from-to)290-296
Number of pages7
JournalApplied Radiation and Isotopes
Volume118
DOIs
StatePublished - 1 Dec 2016

Keywords

  • Cylindrical target
  • Irradiation target
  • Manufacturing method
  • Molybdenum 99

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