Calculation of positron characteristics for elements of the periodic table
Journal of Physics: Conference Series 265 : (2011) // Article ID 012006
Laburpena
Positron lifetimes have been calculated in bulk and monovacancies for most of the elements of the
periodic table. Self-consistent and non-self-consistent schemes have been used for the calculation of the
electronic structure in the solid, as well as different parameterizations for the positron enhancement
factor and correlation energy. The ratio between the monovacancy and bulk lifetimes has been analyzed.
This ratio shows a periodic behaviour with atomic number in all the calculation methods and it is in
agreement with selected experimental data. The ratio shows, in contradiction to previous assumptions,
sensitiveness to the approximations used in the calculations. This extensive work has allowed us to study
and enlighten features of the theory and computing methods broadly used nowadays in simulating,
studying and understanding positronic parameters.