Remeasurement ofAr40andKr84Excitation Functions Leading to the Same Compound Nucleus,Er158

Excitation functions were redetermined for the reactions ${}_{}{}^{118}{}_{}{}^{}\mathrm{Sn}$(${}_{}{}^{40}{}_{}{}^{}\mathrm{Ar}$,$5-6n$) ${}_{}{}^{153-152}{}_{}{}^{}\mathrm{Er}$ and ${}_{}{}^{74}{}_{}{}^{}\mathrm{Ge}$(${}_{}{}^{84}{}_{}{}^{}\mathrm{Kr}$,$5-6n$) ${}_{}{}^{153-152}{}_{}{}^{}\mathrm{Er}$, at two accelerators. Data obtained at the two accelerators agree. The new energy values are, however, different from those published earlier, and no significant differences occur between the (Ar,$\mathrm{xn}$) and (Kr,$\mathrm{xn}$) reactions leading to the same product nucleus. Thus, special mechanisms, such as pre-equilibrium neutron emission and angular-momentum windows, are not needed to interpret the new data.