NUCLEAR MODEL CALCULATION OF EXCITATION FUNCTIONS OF NEUTRON INDUCED REACTIONS ON THE STRUCTURAL MATERIALS OF THE MINIATURE NEUTRON SOURCE REACTOR.
NUCLEAR MODEL CALCULATION OF EXCITATION FUNCTIONS OF NEUTRON INDUCED REACTIONS ON THE STRUCTURAL MATERIALS OF THE MINIATURE NEUTRON SOURCE REACTOR.
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Date
2011-03
Authors
DAUDA, ALIYU
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Abstract
Nuclear models calculation of excitation functions was performed using the nuclear
theoretical model code EXIFON on the impurity nuclides of the Be-reflector of the
MNSR (NIRR-1) elements with concentration greater than 100ppm were considered in
the energy range of 0-20MeV. Result of the calculated excitation functions obtained with
the code EXIFON were compared with the experimental data retrieved from IAEANuclear
Data section EXFOR data library. Some of the results of the calculated excitation
functions agree well with the experimental data, while some disagree. The good
agreement was obtained for nuclides with magic number of neutrons and protons. Shell
structure effects were not taken into consideration during calculation with theoretical
model code. This might be the reason for disagreement. It is also noted that most of the
data retrieved from EXFOR data library were incomplete, scanty, and are measured
around 14MeV. This exposed the short coming of using measured data for calculation of
excitation functions. On the other hand the result of calculated excitation function with
the Code EXIFON seems to give good result.
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Description
A THESIS SUBMITTED TO THE POST GRADUATE SCHOOL
AHMADU BELLO UNIVERSITY, ZARIA, NIGERIA
IN PARTIAL FULFILMENT OF THE REQUIREMENTS FOR THE AWARD OF
THE DEGREE OF MASTER OF SCIENCE IN PHYSICS (NUCLEAR OPTION)
DEPAERTMENT OF PHYSICS AHMADU BELLO UNIVERSITY ZARIA
Keywords
NUCLEAR MODEL, CALCULATION, EXCITATION FUNCTIONS, NEUTRON INDUCED REACTIONS, STRUCTURAL MATERIALS, MINIATURE NEUTRON SOURCE REACTOR