Abstract
Absolute yields of 18 products with $65\ensuremath{\le}A\ensuremath{\le}76$ have been measured for the interaction of 720-MeV $\ensuremath{\alpha}$ particles with enriched $^{92}\mathrm{Mo}$, $^{96}\mathrm{Mo}$, and $^{100}\mathrm{Mo}$. Isobaric yield (charge dispersion) curves have been constructed for $A=72$ to examine the effect of target neutron-to-proton composition on spallation product formation. Results indicate that isobaric yield curve peak positions are moderately dependent and asymmetric shapes strongly dependent on target $\frac{N}{Z}$, the latter particularly so for neutron-richer products. Comparisons with proton results and empirical predictions are presented.NUCLEAR REACTIONS $^{92,96,100}\mathrm{Mo}(\ensuremath{\alpha},\mathrm{spallation})$, ${E}_{\ensuremath{\alpha}}=720$ MeV; cross sections for 18 products $65\ensuremath{\le}A\ensuremath{\le}76$; constructed isobaric yield curves at $A=72$. Enriched targets, Ge(Li) detectors, radiochemistry.
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