Gamow–Teller β decay of 74Kr in a self-consistent approach Original Research Article

We study the influence of shape mixing on the Gamow–Teller β decay of the nucleus 74Kr using the complex EXCITED VAMPIR variational approach for the description of the ground state of 74Kr and the 1+ states appearing within the β+-decay window in the daughter nucleus 74Br. The Gamow–Teller strength is obtained describing consistently the shape mixing in both parent and daughter nucleus. The theoretical results for the Gamow–Teller strength distribution as well as accumulated strength are compared with the available experimental data.