Investigation of spin-isospin strength in ${}_{}{}^{48}{}_{}{}^{}\to _{}^{48}{}_{}{}^{}$Sc and ${}_{}{}^{90}{}_{}{}^{}\to _{}^{90}{}_{}{}^{}$Nb using the ${(}^6$Li${,}^6$He) reaction

The ${(}^6$Li${,}^6$He) reaction was studied on the target nuclei ${}_{}{}^{48}{}_{}{}^{}\mathrm{Ca}$ and ${}_{}{}^{90}{}_{}{}^{}\mathrm{Zr}$ at ${\mathit{E}}_{\mathrm{Li}}$=156 MeV at extreme forward reaction angles. From the zero degree spectra Gamow-Teller strength was extracted for excitation energies 0≤${\mathit{E}}_{\mathit{x}}$≲20 MeV. The results are compared with distorted-wave Born approximation calculations and (p,n) data.