Zirconium-89 finds broad application for use in positron emission tomography. Its cyclotron production has been limited by the heat transfer from yttrium targets at high beam currents. A spot welding technique allows a three-fold increase in beam current, without affecting Zr quality. An yttrium foil, welded to a jet-cooled tantalum support base accommodates a 50µA proton beam degraded to 14MeV. The resulting activity yield of 48±4 MBq/(μA∙hr) now extends the outreach of Zr for a broader distribution.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5164840 | PMC |
| http://dx.doi.org/10.1016/j.apradiso.2016.10.010 | DOI Listing |
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