Neutron flux parameters for k0-NAA method at the Malaysian nuclear agency research reactor after core reconfiguration

A. R. Yavar, Sukiman Sarmani, A. K. Wood, Syazwani Mohd Fadzil, Z. Masood, Khoo Kok Siong Kok Siong

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The Malaysian Nuclear Agency (MNA) research reactor, commissioned in 1982, is a TRIGA Mark II swimming pool type reactor. When the core configuration changed in June 2009, it became essential to re-determine such neutron flux parameters as thermal to epithermal neutron flux ratio (), epithermal neutron flux shape factor (α), thermal neutron flux (φth) and epithermal neutron flux (φepi) in the irradiation positions of MNA research reactor in order to guarantee accuracy in the application of k 0-neutron activation analysis (k0-NAA).The and α were determined using the bare bi-isotopic monitor and bare triple monitor methods, respectively; Au and Zr monitors were utilized in present study. The results for four irradiation positions are presented and discussed in the present work. The calculated values of and α ranged from 33.49 to 47.33 and -0.07 to -0.14, respectively. The φth and the φepi were measured as 2.03 × 1012 (cm -2 s-1) and 6.05 × 1010 (cm-2 s-1) respectively. These results were compared to those of previous studies at this reactor as well as to those of reactors in other countries. The results indicate a good conformity with other findings.

Original languageEnglish
Pages (from-to)219-223
Number of pages5
JournalRadiation Measurements
Volume46
Issue number2
DOIs
Publication statusPublished - Feb 2011

Fingerprint

reactor cores
Research reactors
neutron activation analysis
Neutron activation analysis
Neutron flux
flux (rate)
reactors
monitors
Irradiation
Swimming pools
irradiation
thermal neutrons
configurations

Keywords

  • k-NAA
  • Neutron flux parameters
  • TRIGA Mark II reactor

ASJC Scopus subject areas

  • Radiation
  • Instrumentation

Cite this

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title = "Neutron flux parameters for k0-NAA method at the Malaysian nuclear agency research reactor after core reconfiguration",
abstract = "The Malaysian Nuclear Agency (MNA) research reactor, commissioned in 1982, is a TRIGA Mark II swimming pool type reactor. When the core configuration changed in June 2009, it became essential to re-determine such neutron flux parameters as thermal to epithermal neutron flux ratio (), epithermal neutron flux shape factor (α), thermal neutron flux (φth) and epithermal neutron flux (φepi) in the irradiation positions of MNA research reactor in order to guarantee accuracy in the application of k 0-neutron activation analysis (k0-NAA).The and α were determined using the bare bi-isotopic monitor and bare triple monitor methods, respectively; Au and Zr monitors were utilized in present study. The results for four irradiation positions are presented and discussed in the present work. The calculated values of and α ranged from 33.49 to 47.33 and -0.07 to -0.14, respectively. The φth and the φepi were measured as 2.03 × 1012 (cm -2 s-1) and 6.05 × 1010 (cm-2 s-1) respectively. These results were compared to those of previous studies at this reactor as well as to those of reactors in other countries. The results indicate a good conformity with other findings.",
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AU - Sarmani, Sukiman

AU - Wood, A. K.

AU - Mohd Fadzil, Syazwani

AU - Masood, Z.

AU - Kok Siong, Khoo Kok Siong

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N2 - The Malaysian Nuclear Agency (MNA) research reactor, commissioned in 1982, is a TRIGA Mark II swimming pool type reactor. When the core configuration changed in June 2009, it became essential to re-determine such neutron flux parameters as thermal to epithermal neutron flux ratio (), epithermal neutron flux shape factor (α), thermal neutron flux (φth) and epithermal neutron flux (φepi) in the irradiation positions of MNA research reactor in order to guarantee accuracy in the application of k 0-neutron activation analysis (k0-NAA).The and α were determined using the bare bi-isotopic monitor and bare triple monitor methods, respectively; Au and Zr monitors were utilized in present study. The results for four irradiation positions are presented and discussed in the present work. The calculated values of and α ranged from 33.49 to 47.33 and -0.07 to -0.14, respectively. The φth and the φepi were measured as 2.03 × 1012 (cm -2 s-1) and 6.05 × 1010 (cm-2 s-1) respectively. These results were compared to those of previous studies at this reactor as well as to those of reactors in other countries. The results indicate a good conformity with other findings.

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