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    Distribution of Plutonium Isotopes in Cooling Water from a PWR.

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    Survival Probability of a Doorway State in regular and chaotic environments

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    We calculate survival probability of a special state which couples randomly to a regular or chaotic environment. The environment is modelled by a suitably chosen random matrix ensemble. The exact results exhibit non--perturbative features as revival of probability and non--ergodicity. The role of background complexity and of coupling complexity is discussed as well.Comment: 19 pages 5 Figure
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