Gamma Rays FollowingAr40-Induced Reactions

Abstract

We have bombarded separated Sn and Te isotopes with ${}_{}{}^{40}{}_{}{}^{}\mathrm{Ar}$ projectiles in order to study the (${}_{}{}^{40}{}_{}{}^{}\mathrm{Ar}$, $\mathrm{xn}$) reactions and evaluate them as a means to produce excited nuclei for spectroscopic studies. This proves to be an excellent method for populating ground-band collective levels, and such levels have been identified in the 88-, 90-, and 92-neutron Er and Yb isotopes.