Perturbed Angular Correlation of Nuclei Coherently Excited by Pulsed-Beam Techniques

A new resonance method is discussed which is suited for the investigations of hyperfine interactions of excited nuclear states with lifetimes longer than 1 μsec. A first experiment was performed on a 4-μsec state of ${}_{}{}^{69}{}_{}{}^{}\mathrm{Ge}$. The $g$ factor was determined as $g=-0.222\mathrm{}\pm 0.001$.