Abstract
Proton radioactivity from deformed nuclei is described for the first time by a fully self–consistent calculation based on covariant relativistic density functionals derived from meson exchange and point coupling models.
Highlights
The production and detection of nuclei towards the limits of stability saw a considerable development in the last decade, due to a better capability to achieve fusion evaporation and multi fragmentation reactions [1] involving very small production cross sections, and producing exotic nuclei with extremely short half lives, below a microsecond
The path of the rapid proton capture reactions for the production of nuclei, can involve nuclei at the proton drip-line [4], but the reaction rates will depend strongly on details of the structure of nuclei along the path, and in particular, on the knowledge of resonances, since it is mainly dominated by resonant proton capture
We have extended our spherical calculation in order to account for deformation [25], and in the present work, we discuss a fully self consistent calculation of proton emission from 131Eu, a well deformed nucleus
Summary
The production and detection of nuclei towards the limits of stability saw a considerable development in the last decade, due to a better capability to achieve fusion evaporation and multi fragmentation reactions [1] involving very small production cross sections, and producing exotic nuclei with extremely short half lives, below a microsecond. This can be achieved either by using nonlinear coupling terms or by considering coupling constants dependent on the density of the exchanged mesons Examples of these interactions are the non-linear meson exchange model the NL3 [18] and the density dependent point coupling models the DD-PC1 [19], and the PC-PK1 [20], which were able to describe ground-state properties and collective excitations of β stable and exotic nuclei at the extremes of stability [21]. Ground-state quadrupole deformations have been predicted for proton rich nuclei, and proton separation energies have been calculated, allowing the proton drip-line to be mapped with high precision [21, 22], and the single particle configurations and spectroscopic factors to be derived very successfully. We have extended our spherical calculation in order to account for deformation [25], and in the present work, we discuss a fully self consistent calculation of proton emission from 131Eu, a well deformed nucleus
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