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Nuclear Resonance Fluorescence in
Phys. Rev. 145, 862 – Published 20 May, 1966
DOI: https://doi.org/10.1103/PhysRev.145.862
Abstract
The 777-keV excited state of has been investigated by means of nuclear resonance-fluorescence scattering experiments. The level width was found to be (9.6±1.5)× eV, corresponding to a mean life of (6.9±1.1)× sec. From this result and the relative reduced transition probabilities determined previously by Heydenberg, Pieper and Anderson, the mean lives for first excited states of other even-even Kr isotopes can be obtained. No resonant scattering from the 1.475-MeV state of was observed and its mean life was estimated to be >1.2× sec.
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