Inconsistencies of neutron flux parameters for k0 standardization in neutron activation analysis determined with the use of Au+Zr and Au+Mo+Cr monitor sets at the LVR-15 reactor in Řež

• Published in: Journal of radioanalytical and nuclear chemistry Vol. 293; no. 2; pp. 665 - 674
• Main Authors: Kubešová, Marie, Kučera, Jan
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer Netherlands 01-08-2012
• Subjects: Chemistry; Chemistry and Materials Science; Diagnostic Radiology; Hadrons; Heavy Ions; Inorganic Chemistry; Nuclear Chemistry; Nuclear Physics; Physical Chemistry; standardization; Neutron activation analysis; k; Neutron flux parameters
• ISSN: 0236-5731; 1588-2780
• DOI: 10.1007/s10967-012-1709-y

Multipurpose research reactors require monitoring of neutron flux parameters (
α
,
f
,
F
c
or
Φ
th
) during every irradiation of samples when k
0
standardization in neutron activation analysis is to be used, because the above parameters may change quite frequently and unpredictably. We tested two monitor sets consisting of Au+Zr and Au+Mo+Cr for determination of the neutron flux parameters in k
0
-NAA at the LVR-15 reactor in Řež. Based on analysis of several reference materials, we found the use of the Au+Zr monitor set superior over the Au+Mo+Cr monitor set in the specific conditions of the LVR-15 reactor.