Pion scattering to6−stretched states inMg24<

Abstract

Inelastic m -cross-section measurements at pion incident energies of 150 and 180 MeV were made on 6 states in Mg. In particular, we have determined the (f7/pd5/'2) isoscalar ZO=0. 21 0.02 6 strength for the strongest T=O, J =6 state located at 12.11+0.05 MeV in Mg, and the isoscalar Z0=0. 17+0.04 and isovector Z, =0.21+0.02 strength for the strongest T=1, J =6 state located at 9.18 MeV in Mg. The distorted-wave impulse-approximation pion cross-section calculations required a multiplicative normalization factor of 1.2+0. 1 in order to reproduce the pure isovector strength deduced from electron scattering for the well-known T = 1, J = 6 state at 15.15 MeV in Mg and the T = 2, J = 6 state at 18.05 MeV jn Mg.