Study Shows Abnormal Enhancement of a-Particle Clustering in Uranium Isotopes
Written by AZoMApr 19 2021
In nuclear physics research, the discovery of new isotopes with extreme proton/neutron numbers is always fascinating. The α-decay in the heavy nuclei region is one of the ubiquitous decay modes and has a crucial role in the search for new isotopes.
The illustration of the enhanced α-particle preformation in
214,
216U deduced by the strong proton-neutron interaction. Image Credit: Zhiyuan Zhang.
But even after nearly a century of analyzing α-decay, researchers are still unable to perfectly explain how the α-particle forms at the nucleus surface before it is emitted.
Chinese Academy of Sciences
It is always exciting to find new isotopes with extreme neutron/proton numbers in nuclear physics research. In the region of heavy nuclei, α-decay is one of the pervasive decay modes and plays an essential role in searching for new isotopes. However, even after about a century of studying α-decay, scientists still cannot perfectly describe how the α-particle is formed at the surface of the nucleus before its emission.
In the α-decay process, the α-particle can be regarded not only as two protons plus two neutrons, but also as two proton-neutron pairs. Although previous studies have proved the importance of the pairing forces between the identical nucleons, it remains unclear whether the strong proton-neutron interactions have an impact on α-decay properties, especially in the heavy nuclear region.