Catalysis of Fission Isomer Decay in the Coulomb Field of a Foil Nucleus for Ternary System of 252Cf

Abstract In this work, We investigate the decay of fission isomers formed in spontaneous fission of 252Cf. In the framework of TNS model, we describe the formation of the TNS and its decay, with subsequent formation of fission isomer as a dinuclear system. The modification of DNS half-lives we calculate using a quantum-mechanical tunneling approach. Our calculations reveal a dramatic catalytic effect of the external Coulomb field on the decay process of DNS. Our results provide a direct and quantitative explanation for the experimental observations reported by [1]. This work bridges the gap between theoretical predictions and experimental observations, providing a comprehensive understanding of this fascinating nuclear decay phenomenon.

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