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In this paper, the nuclear structure and some prospective decay properties of the 128−208Sm62 elements are studied. This is accomplished by using an axially deformed oscillator basis and the Relativistic Mean Field model (RMF) with PK1 and NL-SH force parameters. The bulk characteristics are carefully examined, including the binding energy (B.E./A), nuclear radii,quadrupole deformation parameter(β2), two neutron separation energy (S2n), and differential change of two neutron separation energy (dS2n). Estimates are also made for the half-lives of the Sm isotopes for α-decay, β-decay and spontaneous fission (SF). Both our computed Q-values and empirically measurable Q-values are used to determine the α-decay half-life periods using the MUDL and AKRE formulae. The results we anticipate could be useful for experiments and future perspective. [ABSTRACT FROM AUTHOR]

β decay has played a key role in studies of shape coexistence throughout the nuclear chart. This has been mainly due to the sensitivity in γ -ray and conversion electron spectroscopy that can be achieved following the population of excited states by β decay. In some regions, the spectroscopic studies using β decay have been the first to suggest the presence of shape coexistence; in others, they have reinforced the suggestion and provided important spectroscopic data. The present work reviews some of the key regions, with a prime focus on the neutron-rich side of the valley of stability, where β -decay measurements have played an important role. [ABSTRACT FROM AUTHOR]

The determination of the β intensity probability between the ground states of parent and daughter nuclei has traditionally been a difficult task with standard γ -spectroscopy approaches due to the lack of the associated γ emission. In the last years, the total absorption γ -ray spectroscopy technique has successfully proven its ability to deal with this problem by means of different procedures. This article discusses the potential of these methods, and a new approach for segmented total-absorption γ -ray spectrometers is also introduced. An overview of applications is presented based on past, present, and future β -decay experiments. [ABSTRACT FROM AUTHOR]