Abstract
We discuss the non-adiabatic quasiparticle approach for calculating the rotational spectra and decay width of odd-odd proton emitters. The Coriolis effects are incorporated in both the parent and daughter wave functions. Results for the two probable ground states (1+ and 2+ ) of the proton emitter 130 Eu are discussed. With our calculations, we confirm the proton emitting state to be the Iπ = 1+ state, irrespective of the strength of the Coriolis interaction. This study provides us with an opportunity to look into the details of wave functions of deformed odd-odd nuclei to which the proton emission halflives are quite sensitive.
Highlights
Heavy nuclei (Z > 50) at the proton dripline are unbound to the emission of a constituent proton from their ground states
Adiabatic approach with zero point energy [4] has already explained some of the odd-odd nuclei, and we improve this approach by taking into account the finite moment of inertia, and the full rotational spectra, which allows considerable Coriolis mixing of quasiparticle states
We present the non-adiabatic approach along with proper treatment of quasiparticle mixing, to study the structure and decay of the proton rich odd-odd nuclei near the drip line. This formalism is applied to study proton emission from 130Eu where we focus on the role of Coriolis interaction on the rotational states of the daughter nucleus 129Sm and the decay width of 130Eu
Summary
Heavy nuclei (Z > 50) at the proton dripline are unbound to the emission of a constituent proton from their ground states. Adiabatic approach with zero point energy [4] has already explained some of the odd-odd nuclei, and we improve this approach by taking into account the finite moment of inertia, and the full rotational spectra, which allows considerable Coriolis mixing of quasiparticle states This realistic approach along with the consideration of residual neutron-proton (np) interaction and Newby shift (for K = 0 band) [5, 6], would lead to a precise study of the odd-odd proton emitters. We present the non-adiabatic approach along with proper treatment of quasiparticle mixing, to study the structure and decay of the proton rich odd-odd nuclei near the drip line.
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