The Strength of the Analog and Gamow-teller Giant Resonances and Hindrance of the 2νββ - Decay Rate
نویسنده
چکیده
An approach for describing the hindrance of the nuclear 2νββ -decay amplitude is proposed. The approach is based on a new formula obtained by a model-independent transformation of the initial expression for the amplitude. This formula takes explicitly into account the hindrance of the decay-amplitude due to the presence of the collective Gamow-Teller state. Calculations are performed within the simplest version of the approach. Calculated and experimental 2νββ halve-lives are compared for a wide range of nuclei. PACS numbers: 23.40-s ; 23.40.Hc ; 21.10.Tg
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