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- W3034213670 abstract "We investigate the dynamics of spontaneous fission in a configuration-interaction (CI) approach. In that formalism the decay rate is governed by an effective interaction coupling the ground-state configuration and a fission doorway configuration, with the interaction strength determined by inverting a high-dimensioned CI Hamiltonian matrix that may have a block-tridiagonal structure. It is shown that the decay rate decreases exponentially with the number of blocks at a rate determined by the largest eigenvalue of a matrix in the block space for Hamiltonians with identical off-diagonal blocks. The theory is greatly simplified by approximations similar in spirit to the adiabatic and the least-action approximations in continuum representations. Here each block is replaced by a single matrix element. While the adiabatic reduction underestimates the coupling, a reduction based on a maximum-coupling approximation works well in a schematic CI model." @default.
- W3034213670 created "2020-06-19" @default.
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- W3034213670 date "2020-08-13" @default.
- W3034213670 modified "2023-10-02" @default.
- W3034213670 title "Least action and the maximum-coupling approximations in the theory of spontaneous fission" @default.
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- W3034213670 doi "https://doi.org/10.1103/physrevc.102.024316" @default.
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