Level structures in odd-odd deformed nucleus 184Ta

A detailed low-energy level scheme of the odd-odd n-rich nucleus Ta-184(73)111 is constructed using the well tested Two-Quasiparticle Rotor Model (TQRM) for calculating the bandhead energies of physically admissible 2qp configurations with the inclusion of residual n-p interaction contribution. The presently available data on this level scheme from Hf-184 decay are shown to be in agreement with these calculations. Our analysis concludes that Hf-184 (Q(beta) = 1340(30) keV) decay admits of 7 additional (to the 3 presently reported) beta-branches to Ta-184 with J = 0 or 1 and 8 more physically admissible weak (1f(u)) beta-branches populating J(pi) = 2-levels in Ta-184. Further, a close examination of our level scheme clearly indicates the existence of a low-lying (E-x = 260(40) keV) high-spin (J(pi) = 10(-)) long-lived isomer in this nucleus.