THE DETERMINATION OF k0 – VALUES OF SOME DISCREPANT NUCLIDES USING STANDARD REFERENCE MATERIALS WITH NIRR-1 FACILITIES
THE DETERMINATION OF k0 – VALUES OF SOME DISCREPANT NUCLIDES USING STANDARD REFERENCE MATERIALS WITH NIRR-1 FACILITIES
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Date
2011-06
Authors
AVAA, AUNGWA ABRAHAM
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Abstract
The k0 –values of the following nuclides (Ca-49, Ba-131, Cd-115, In-116m, Cd-116m2,
Co-60, Cs-134, Ir-192, Hg-197, Se-75, Gd-153, Gd-159, Pd-109, Ag-110m, Tm-170,
Re-186, Sm-153, S-36, U-239) suspected to have discrepant k0 –values were
determined using Certified Reference Materials, (SMELS I, III and NIST 1633b Coal
fly Ash). The result 1.10E-4 for 49Ca at 3084keV, 1.95E-5, 3.43E-6, 6.45E-5 for 131Ba
at the energy of 373, 486, and 496keV 4.70E-4 for 115Cd at 528keV; 1.66E-1 for 153Sm
at 103keV; 6.88E-3, 1.38E-3 for 75Se at 136 and 401.73keV respectively; 7.27E-1,
1.54E+0, 2.28E+0 for 116mIn at 418.9, 1097 and 1293keV respectively; 4.00E-2, 7.32E-
2, 4.67E-1, 3.93E-2 for 134Cs at 562, 569, 602 and 802keV respectively were gotten.
The student t-test which is the statistical analysis was used to compare the result of this
work with the recommended data. The result of the comparison at 5% confidences
intervals showed no significance difference which reveals the accuracy of the k0-
standardisation adopted in Nigeria Research Reactor -1 (NIRR-1).
Description
A THESIS SUBMITTED TO THE POSTGRADUATE SCHOOL
AHMADU BELLO UNIVERSITY, ZARIA NIGERIA
IN PARTIAL FULFILLMENT FOR THE AWARD OF MASTER OF
SCIENCE IN PHYSICS
DEPARTMENT OF PHYSICS
AHMADU BELLO UNIVERSITY, ZARIA
NIGERIA.
Keywords
DETERMINATION,, k0 – VALUES,, DISCREPANT,, NUCLIDES,, STANDARD,, REFERENCE,, MATERIALS,, NIRR-1,, FACILITIES