The technique of instrumental neutron activation analysis as applied
to the analysis cf geological material has beer siudiel with particular
emphasis on methods of reducing or eliminating analytical errors.
The neutron flux gradients in the reactor irradiation facilities
used were found to introduce errors of up to 20%. The use of iron foils
to monitor both the thermal and fast neutron flux received by individual
samples has been shown to reduce iiradiation errors to approximately 1%.
The contribution of epithermal neutron resonances to (n, >’ ) reaction cross
sections has been recognised. Estimated epithermal neutron flux factors
have been shown to reduce the associated errors by as much as 7%.
| Identifer | oai:union.ndltd.org:netd.ac.za/oai:union.ndltd.org:wits/oai:wiredspace.wits.ac.za:10539/18147 |
| Date | January 2015 |
| Creators | Rasmussen, Stephen Eric |
| Source Sets | South African National ETD Portal |
| Language | English |
| Detected Language | English |
| Type | Thesis |
| Format | application/pdf |
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