Lifetimes in the neutron-rich nuclei ¹⁰⁴Mo, ¹¹⁰Ru, and ¹⁴⁴Ba were measured using the differential recoil distance method. The experiment was performed with a ²⁵²Cf fission source inside the New Yale Plunger Device. γ rays were detected by the SPEctrometer for Experiments with Doppler shifts at Yale (SPEEDY) while fission fragments with the appropriate kinematics were detected by an array of photocells.
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Krücken et al. (2001) studied this question.
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