Open AccessSystematical Analysis of Alpha-active Nuclides
Author(s) -
J. Munkhsaikhan,
M. Odsuren,
G. Khuukhenkhuu
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1000/1/012002
Subject(s) - nuclide , physics , alpha particle , atomic physics , alpha decay , nuclear physics , geiger counter , isotope , coulomb , ground state , electron
The systematical analysis of alpha-active nuclides is useful for both the nuclear technology applications and understanding of nuclear structure study. Geiger-Nuttall law, which describes a dependence of the disintegration constant on the range of α -particles, was deduced from the Gamow theory explaining the passage of the α -particles through the Coulomb barrier by the quantum mechanical tunneling effect. Ground-to-ground state α -transitions for natural and artificial α -active nuclides were analyzed utilizing the Geiger-Nuttall rule. From rough analysis five group-like branches on the dependence of α -decay half- lives on α -particle energy were observed. Detailed analysis shows that precise linear dependences of the logarithm of α -decay half-lives on the reciprocal of square root of the α - particle energy for even-even isotopes of the U, Pu and Cm there are. However, for some even-even isotopes of the Po, Ra and Th regular behaviour of mass numbers was broken. This non-regularity of the mass numbers on the Geiger-Nuttall line is explained by the nuclear shell model.