Determination of Thermal Epithermal Neutron Fluz Ratio (f), and Epithermal, Neutron Flux Shape Factor (α) in the Large Sample INAA Instrumental Neutron Activation Analysis Irradiation Channel at the Gharr-1 Facility

Authors

  • O. Gyampo National Nuclear Research Institute, Ghana Atomic Energy Commission
  • J. B. Tandoh National Nuclear Research Institute, Ghana Atomic Energy Commission
  • H. Ahiamadjie National Nuclear Research Institute, Ghana Atomic Energy Commission
  • B. J. B. Nyarko Ghana Atomic Energy Commission
  • E. H. K. Akaho Graduate School of Nuclear and Allied Sciences, University of Ghana
  • J. J. Fletcher Graduate School of Nuclear and Allied Sciences, University of Ghana
  • A. G. Ampong Ghana Atomic Energy Commission

Keywords:

LSNAA, GHARR-1, k0, neutrons

Abstract

The thermal-to-epithermal neutron ratio (f) and epithermal neutron shaping factor (a) are essential parameters when calculating the concentration of samples using the k0-standardization method in the Large sample neutron activation analysis (LSNAA). The work was performed in a newly installed Large Sample Neutron Activation Analysis facility in the Ghana Research Reactor-1 (GHARR-1) facility using Au/Zr monitor couple. The thermal to epithermal neutron ratio was found to be 8.25 ± 0.14 and epithermal neutron shape factor (a) was also found to be 0.32998 ± 0.012. These results aided us in the determination of elemental concentration of “large samples†using the k0-standardization method at the GHARR-1 facility.

Author Biographies

O. Gyampo, National Nuclear Research Institute, Ghana Atomic Energy Commission

Nuclear Application Center , Research Scientist

J. B. Tandoh, National Nuclear Research Institute, Ghana Atomic Energy Commission

Accelerator Researh Center, Research Scientist

H. Ahiamadjie, National Nuclear Research Institute, Ghana Atomic Energy Commission

Accelerator Researh Center, Research Scientist

B. J. B. Nyarko, Ghana Atomic Energy Commission

Principle Scientific Officer, Ghana Atomic Energy Commission

E. H. K. Akaho, Graduate School of Nuclear and Allied Sciences, University of Ghana

Principle Scientific Officer, Graduate School of Nuclear and Allied Sciences, University of Ghana

J. J. Fletcher, Graduate School of Nuclear and Allied Sciences, University of Ghana

Principle Scientific Officer, Graduate School of Nuclear and Allied Sciences, University of Ghana

A. G. Ampong, Ghana Atomic Energy Commission

Principal Technologist

References

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Published

2015-06-21

How to Cite

Gyampo, O., Tandoh, J. B., Ahiamadjie, H., Nyarko, B. J. B., Akaho, E. H. K., Fletcher, J. J., & Ampong, A. G. (2015). Determination of Thermal Epithermal Neutron Fluz Ratio (f), and Epithermal, Neutron Flux Shape Factor (α) in the Large Sample INAA Instrumental Neutron Activation Analysis Irradiation Channel at the Gharr-1 Facility. Asian Journal of Applied Sciences, 3(3). Retrieved from https://ajouronline.com/index.php/AJAS/article/view/2137

Issue

Vol. 3 No. 3 (2015): June 2015

Section

Articles

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