Fig. 8.

Experimental results: (a) maximum radiance; (b) FWHMs of the radiance profiles for ${}^{18}\mathrm{F}$, ${}^{64}\mathrm{Cu}$, ${}^{198}\mathrm{Au}$; and (c) FWHMs of the radiance profiles for ${}^{32}\mathrm{P}$ and ${}^{76}\mathrm{Br}$. [Dashed lines in (b) and (c) are for ${}^{198}\mathrm{Au}$ shown on both plots as a reference.]