TY - JOUR
T1 - Experimental determination of k0, Q0, Er factors and neutron cross-sections for 41 isotopes of interest in Neutron Activation Analysis
AU - Farina Arboccò, F.
AU - Vermaercke, Peter
AU - Smits, Katrien
AU - Sneyers, Liesel
AU - Strijckmans, K.
N1 - Score = 10
PY - 2012/8/28
Y1 - 2012/8/28
N2 - 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 B10 % for
Q0 factors, C25 % for Er values and B4 % for k0 values.
Our precision and accuracy are discussed thoroughly.
AB - 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 B10 % for
Q0 factors, C25 % for Er values and B4 % for k0 values.
Our precision and accuracy are discussed thoroughly.
KW - Neutron Activation Analysis
KW - k0 factor
KW - Q0 factor
KW - Effective resonance energy E¯r
KW - Neutron cross-section
KW - Resonance integral
UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_132798
UR - http://knowledgecentre.sckcen.be/so2/bibref/11008
U2 - 10.1007/s10967-012-2132-0
DO - 10.1007/s10967-012-2132-0
M3 - Article
SN - 0236-5731
VL - 296
SP - 931
EP - 938
JO - Journal of Radioanalytical and Nuclear Chemistry
JF - Journal of Radioanalytical and Nuclear Chemistry
IS - 2
ER -