The Magnetic Moment of the Second Excited State in 26Al

The magnetic moment of the 3 + second excited state at 417 keV in 26 Al has been determined by a time integral perturbed angular distribution method. This level was populated by the 25 Mg(p, γ) 26 Al reaction at E p =956 keV. An external field of 34.1 kOe was applied perpendicular to the reaction plane. The Larmor precession angle Δ θ was derived from the difference of rotation angles between the angular distributions of the 417 keV and the 1650 keV γ-rays emitted in the reaction. The mean life of the 417 keV level was carefully remeasured to be τ=1.72±0.02 nsec. Combining the precession angle Δ θ with the mean life τ the g -factor of this level was determined to be g =0.65±0.15. This value is consistent with both the shell model and the Nilsson model calculations.