Cross sections for ${}_{}{}^{20}{}_{}{}^{}\mathrm{Ne}$(α,${\mathrm{\alpha }}_{1,2,3}$) were measured from ${\mathit{E}}_{\mathrm{\alpha }}$=5.6 (${\mathrm{\alpha }}_1$), 7.5 (${\mathrm{\alpha }}_2$), and 9.5 (${\mathrm{\alpha }}_3$) MeV up to 11.0 MeV in steps of 10 and 15 keV at up to 20 angles. The ${\mathrm{\alpha }}_1$ data were fitted with a Legendre polynomial expansion, thus allowing limits to be placed on the spin and parity of 31 levels in ${}_{}{}^{24}{}_{}{}^{}\mathrm{Mg}$, about five of which have not previously been seen in elastic α scattering. In the ${\mathrm{\alpha }}_2$ data some 15 levels are identified as to energy and width.

• Received 29 January 1992

DOI:https://doi.org/10.1103/PhysRevC.45.2693