Radioactive decay of nuclei via emission of ??-particles is studied using three different
theoretical approaches, viz: the quasi-bound state wavefunction approach (QSWA), the
superasymmetric ??ssion model (SAFM) and the semiclassical approximation (QCA).
The half-lives of the radioactive nuclei, calculated using these methods, are compared
with each other and with available experimental data.
The resonance wavefunction is obtained by numerically integrating the Schrödinger equation
with outgoing boundary conditions. The sensitivity of the calculated decay widths
to two particular parameter sets of the Woods-Saxon (WS) optical potentials are studied.
Double folding (DF) model calculations to obtain the bare ??-nucleus potential have
been carried out with the Reid M3Y effective nucleon-nucleon (NN) interactions. The
exchange part of the interaction was taken to be of zero-range pseudo-potential and the
density dependence of the NN interaction is accounted for.
The effectiveness of the method is demonstrated using both even-even and odd-mass
spherical nuclei. / Physics / MSC (PHYSICS)
| Identifer | oai:union.ndltd.org:netd.ac.za/oai:union.ndltd.org:unisa/oai:umkn-dsp01.int.unisa.ac.za:10500/1220 |
| Date | 30 September 2005 |
| Creators | Ogunbade, Olusegun G. |
| Contributors | Rakityansky, S. A. (Dr.) |
| Source Sets | South African National ETD Portal |
| Language | English |
| Detected Language | English |
| Type | Thesis |
| Format | 1 online resource (vii, 78 leaves) |
Page generated in 0.0021 seconds