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Experimental determination of k0, Q0, Ēr factors and neutron cross-sections for 41 isotopes of interest in Neutron Activation Analysis

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Abstract
The k0 -literature has been reviewed every decade but some of its nuclear data is still more than 30 years old. Sometimes Q0 values were adopted from the nuclear data at that time or were experimentally determined by only 1 laboratory. Other isotopes were listed with accurate pairs of (k0, Q0) values but were also quoted as candidates for redetermination for different reasons (i.e. imprecise cadmium transmission factors, half-lives). In this work we aim at the experimental re-determination of k0 and Q0 values for 41 isotopes of analytical interest while introducing a methodology for simultaneous - Er and Q0 determination employing N irradiation channels. In order to satisfy the metrological level required, up to 12 repeats per standard were irradiated in up to 4 irradiation channels of the Belgian Reactor 1 (BR1, SCK∙CEN) having a wide spread in neutron characteristics. Our relative percentile differences to the literature values were usually ≤10 % for Q0 factors, ≥25 % for - Er values and ≤4 % for k0 values. Our precision and accuracy are discussed thoroughly
Keywords
k0 factor, Effective resonance energy Ēr, Resonance integral, Neutron Activation Analysis, Q0 factor, VALUES, STANDARDIZATION, NAA, KO-MEASUREMENTS, SPECTRUM, Neutron cross-section, NUCLEAR-DATA COMPILATION

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Citation

Please use this url to cite or link to this publication:

Chicago
Farina, Fulvio, Peter Vermaercke, Katrien Smits, Liesel Sneyers, and Karel Strijckmans. 2013. “Experimental Determination of K0, Q0, Ēr Factors and Neutron Cross-sections for 41 Isotopes of Interest in Neutron Activation Analysis.” Journal of Radioanalytical and Nuclear Chemistry 296 (2): 931–938.
APA
Farina, Fulvio, Vermaercke, P., Smits, K., Sneyers, L., & Strijckmans, K. (2013). Experimental determination of k0, Q0, Ēr factors and neutron cross-sections for 41 isotopes of interest in Neutron Activation Analysis. JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY, 296(2), 931–938. Presented at the Methods and Application of Radioanalytical Chemistry.
Vancouver
1.
Farina F, Vermaercke P, Smits K, Sneyers L, Strijckmans K. Experimental determination of k0, Q0, Ēr factors and neutron cross-sections for 41 isotopes of interest in Neutron Activation Analysis. JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY. 2013;296(2):931–8.
MLA
Farina, Fulvio, Peter Vermaercke, Katrien Smits, et al. “Experimental Determination of K0, Q0, Ēr Factors and Neutron Cross-sections for 41 Isotopes of Interest in Neutron Activation Analysis.” JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY 296.2 (2013): 931–938. Print.
@article{2989077,
  abstract     = {The k0 -literature has been reviewed every decade but some of its nuclear data is still more than 30 years old. Sometimes Q0 values were adopted from the nuclear data at that time or were experimentally determined by only 1 laboratory. Other isotopes were listed with accurate pairs of (k0, Q0) values but were also quoted as candidates for redetermination for different reasons (i.e. imprecise cadmium transmission factors, half-lives). In this work we aim at the experimental re-determination of k0 and Q0 values for 41 isotopes of analytical interest while introducing a methodology for simultaneous - Er and Q0 determination employing N irradiation channels. In order to satisfy the metrological level required, up to 12 repeats per standard were irradiated in up to 4 irradiation channels of the Belgian Reactor 1 (BR1, SCK\unmatched{2219}CEN) having a wide spread in neutron characteristics. Our relative percentile differences to the literature values were usually \ensuremath{\leq}10 \% for Q0 factors, \ensuremath{\geq}25 \% for - Er values and \ensuremath{\leq}4 \% for k0 values. Our precision and accuracy are discussed thoroughly},
  author       = {Farina, Fulvio and Vermaercke, Peter and Smits, Katrien and Sneyers, Liesel and Strijckmans, Karel},
  issn         = {0236-5731},
  journal      = {JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY},
  keyword      = {k0 factor,Effective resonance energy \={E}r,Resonance integral,Neutron Activation Analysis,Q0 factor,VALUES,STANDARDIZATION,NAA,KO-MEASUREMENTS,SPECTRUM,Neutron cross-section,NUCLEAR-DATA COMPILATION},
  language     = {eng},
  location     = {Hawaii, USA},
  number       = {2},
  pages        = {931--938},
  title        = {Experimental determination of k0, Q0, \={E}r factors and neutron cross-sections for 41 isotopes of interest in Neutron Activation Analysis},
  url          = {http://dx.doi.org/10.1007/s10967-012-2132-0},
  volume       = {296},
  year         = {2013},
}

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