Isotopically resolved neutron total cross sections at intermediate energies

The neutron total cross sections ${\ensuremath{\sigma}}_{\mathrm{tot}}$ of $^{16,18}\mathrm{O},^{58,64}\mathrm{Ni}$, $^{103}\mathrm{Rh}$, and $^{112,124}\mathrm{Sn}$ have been measured at the Los Alamos Neutron Science Center from low to intermediate energies $(3\ensuremath{\le}{E}_{\mathrm{lab}}\ensuremath{\le}450 \mathrm{MeV})$ by leveraging wave-form-digitizer technology. The ${\ensuremath{\sigma}}_{\mathrm{tot}}$ relative differences between isotopes are presented, revealing additional information about the isovector components needed for an accurate optical-model description away from stability. Digitizer-enabled ${\ensuremath{\sigma}}_{\mathrm{tot}}$-measurement techniques are discussed and a series of uncertainty-quantified dispersive optical model (DOM) analyses using these new data is presented, validating the use of the DOM for modeling light systems $(^{16,18}\mathrm{O})$ and systems with open neutron shells $(^{58,64}\mathrm{Ni} \mathrm{and} ^{112,124}\mathrm{Sn})$. The valence-nucleon spectroscopic factors extracted for each isotope reaffirm the usefulness of high-energy proton reaction cross sections for characterizing depletion from the mean-field expectation.