Gamma-Ray Spectroscopy inA≅40Nuclei via Heavy-Ion-Induced Reactions: High-Spin States inK41andCa41

Abstract

Compound-nuclear reactions induced by bombardment of ${}_{}{}^{24}{}_{}{}^{}\mathrm{Mg}$, ${}_{}{}^{26}{}_{}{}^{}\mathrm{Mg}$, and ${}_{}{}^{27}{}_{}{}^{}\mathrm{Al}$ targets with 20-60-MeV ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$, ${}_{}{}^{18}{}_{}{}^{}\mathrm{O}$, and ${}_{}{}^{19}{}_{}{}^{}\mathrm{F}$ beams have been used to study $\gamma$ transitions between high-spin states in nuclei in the mass region $32<~A<~44$. Results for ${}_{}{}^{41}{}_{}{}^{}\mathrm{K}$ and ${}_{}{}^{41}{}_{}{}^{}\mathrm{Ca}$ are presented to exemplify the method and results. The $\gamma$-ray decay of states with probable spins up to $\frac{19}{2}$ are observed in both nuclei.