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Particularly for Ac, Th, and Pa isotopes in this region the mass landscape is not well-studied. The region has very few directly measured mass values, and where masses are directly measured they tend to have been done at ESR \cite{Litvinov_2008} and could benefit from a cross-check by an alternate method. As reported in \cite{Schury_2015}, we found deviations from ESR values for $^{201}$As and $^{201}$Po.   \subsection{Determination of isomeric production ratios}  The large number isomeric states known to exist in this region provide us with a special means to investigate the nuclear structure in this region. It is generally understood that direct production (e.g. by fragmentation or complete fusion) of nuclei can be na\;{i}vely na\"{i}vely  understood, to zeroth-order, to populate spin states with a probability proportional to $I(I+1)$. Historically, studies of isomeric ratios \cite{Bowry_2013}\cite{de_Jong_1997} have measured the decay of isomeric and ground states to infer the relative populations. While such studies are the only means to address short-lived ($T_{1/2}\ll$1~ms) isomeric states, they require corrections for detector efficiencies, et cetera. By direct mass measurements, we will determine the production ratios without need for such corrections.