Gamma-ray spectroscopic studies on high-spin states inAs71andAs73using heavy-ion reactions

The heavy-ion reactions ($\alpha , 2n$) and (${}_{}{}^{18}{}_{}{}^{}\mathrm{O}$, $p2n$) have been used to study by $\gamma$-ray spectroscopy the nuclei ${}_{}{}^{71}{}_{}{}^{}\mathrm{As}$ and ${}_{}{}^{73}{}_{}{}^{}\mathrm{As}$ with emphasis on high-spin states. Spin and parity assignments were made on the basis of coincidence measurements, angular distributions, and excitation functions. Level schemes for ${}_{}{}^{71}{}_{}{}^{}\mathrm{As}$ and ${}_{}{}^{73}{}_{}{}^{}\mathrm{As}$ have been constructed which contain a stretched spin band on a $g_{\frac{9}{2}}$ state.