Abstract
Mean lifetimes of levels in the mirror nuclei 27Si and 27Al have been measured using the Doppler-shift-attenuation (DSA) method and the reactions 12C( 16O, n) 27Si and 12C( 16O, p) 27Al. The lifetime values or limits were determined for 14 levels in 27Si and 7 levels in 27Al. For the effective stopping of recoils, the targets were prepared by implanting 12C into Ta backings. The Monte Carlo method and the experimental stopping power were used in the DSA analysis. The strengths of the analogue transitions are discussed.
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