Recently, was developed a new theory of the Jost function, within
which, it was split in two terms involving on one side, singlevalued
analytic functions of the energy, and on the other, factors
responsible for the ...
A method of extracting resonance parameters from scattering data is outlined for
scattering that involves Coulomb interactions. This is done for single-channel
scattering, as well as multi-channel scattering. Within the ...
The analysis of scattering data is usually done by fitting the S-matrix at real experimental energies. An analytic continuation to complex and negative energies must then be performed to locate possible resonances and bound ...
Fakira-Du Toit, Hamida Hamida Sarah Jane(University of Pretoria, 2016)
The main question that has been answered in this research project is: what
happens to the singularities of the S-matrix when the interaction potential
becomes complex? In other words, we looked at the resonance spectral ...
Tshipi, John Tshegofatso(University of Pretoria, 2016)
The aim of this research is to develop a method for expanding the Jost functions
as a Taylor-type power series on the complex angular momentum plane.
From this method in conjunction with the Watson transformation, we ...
Gopane, Ishmael Mmusi(University of Pretoria, 2015)
Three-body hypernuclear nn and n systems are studied within the hyperspherical
approach framework with local two-body S-wave potentials describing
the nn, n and interactions using the Jost functions method.