We calculate the M1 strength functions of ${}_{}{}^{20}{}_{}{}^{}\mathrm{Ne}$ and ${}_{}{}^{36}{}_{}{}^{}\mathrm{Ar}$ using the wave functions obtained in a full sd-shell configuration-mixing calculation. Our results strongly suggest that the $1^{+}$ T=1 state of ${}_{}{}^{20}{}_{}{}^{}\mathrm{Ne}$ at 11.24 MeV is the counterpart in light nuclei of the recently discovered ‘‘twisting mode’’ in heavy nuclei.

• Received 4 February 1986

DOI:https://doi.org/10.1103/PhysRevC.34.1137