Abstract

Abstract Nuclear matrix elements for the 2 − (0.959 MeV β − )2 + beta transition in 198 Au were extracted and comparison was made with CVC theory predictions for the vector matrix element ratio Λ cvc = ∫α/∫ir/p. It was found that the ratio Λ cvc was consistent with the CVC prediction based on the assumption that the Coulomb Hamiltonian is diagonal. However, contributions from off-diagonal matrix elements of the Coulomb Hamiltonian could not be ruled out. Fairly good limits were placed on the nuclear matrix elements in spite of the fact that the Coulombenhanced combinations of matrix elements dominate the transition.

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