Abstract
Significant progresses have been made so far for the synthesis of the heaviest elements, while the knowledge of them appears to be quite limited even when it comes to basic properties, e.g., their size. On the other side, the observation of α decay chains is the main tool to identify the newly produced elements. In this report, we propose to make use of the available experimental α decay data to extract the nuclear charge radii of superheavy nuclei. Within the density dependent cluster model, the nucleon density distribution of the target nucleus is determined by exactly reproducing the measured α decay half-life of its parent, finally leading to the nuclear radii. Encouraged by the agreement between theory and experiment for heavy nuclei, we extend the study to the region of superheavy nuclei as well.
Highlights
Background and motivationWith the advent of improved facilities and technologies, a great deal of experimental efforts have been devoted to synthesize the superheavy nuclei (SHN), leading to the makeup of nuclidic chart up to Z = 118 [1, 2]
There are available methods to measure the nuclear charge radius such as particles scattering on the target nuclei, Kα X rays, measurements of transitions energies in muonic atoms and optical isotopes shifts [3]
Owing to the advanced experimental facilities and theoretical approaches, improved experimental data have been accumulated for the α decay process [1, 2, 4] and considerable progresses have been made for the α decay calculations [5,6,7,8,9,10,11,12,13]
Summary
With the advent of improved facilities and technologies, a great deal of experimental efforts have been devoted to synthesize the superheavy nuclei (SHN), leading to the makeup of nuclidic chart up to Z = 118 [1, 2]. There are available methods to measure the nuclear charge radius such as particles scattering on the target nuclei, Kα X rays, measurements of transitions energies in muonic atoms and optical isotopes shifts [3]. It is interesting to employ an alternative approach using the available experimental α decay data to extract more information on structural properties, e.g., the nuclear charge radii, for superheavy nuclei.
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