The effect of target-gas purity on the chemical form of F-18 during 18F-F2 production using the neon/fluorine target.


Irradiation of gas mixtures of F2/Ne (20Ne leads to d,alpha 18F) which contained percent levels ( > 0.1%) of N2, CO2, CO2, or CF4 resulted in the production of unacceptable levels of F-18-labeled NF3 and CF4 at the expense of 18F-F2. Analycical gas chromatographic methods have been devised to determine contaminant levels in the target gas as well as in the… (More)