Journal of Physics G: Nuclear and Particle Physics
Journal of Physics G: Nuclear and Particle Physics
5 years ago

Landscape of α preformation probability for even–even nuclei in medium mass region

The behavior of α cluster preformation probability, in α decay, is a rich source of the structural information, such as the clustering, pairing, and shell evolution in heavy nuclei. Meanwhile, the experimental α decay data have been very recently compiled in the newest table NUBASE2016. Through a least square fit to the available experimental data of nuclear charge radii plus the neutron skin thickness, we obtain a new set of parameters for the two-parameter Fermi nucleon density distributions in target nuclei. Subsequently, we make use of these refreshed inputs, involved in the density-dependent cluster model, to extract α preformation factor ( ##IMG## [http://ej.iop.org/images/0954-3899/45/3/035103/jpgaaa90bieqn1.gif] {${P}_{\alpha }$} ) for a large range of medium α emitters with N < 126 from the newest data table. Besides checking the supposed smooth pattern of P α in the open-shell r...

Publisher URL: http://iopscience.iop.org/0954-3899/45/3/035103

DOI: 10.1088/1361-6471/aaa90b

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