TY - JOUR
T1 - The impact of polyethylene vials on reactor channel characterization in k0-NAA
AU - Farina, Fulvio
AU - Strijckmans, Karel
AU - Vermaercke, Peter
AU - Verheyen, Leen
AU - Sneyers, Liesel
N1 - Score = 10
PY - 2010/8/19
Y1 - 2010/8/19
N2 - Reactor channel characterization is commonly performed by irradiating bare and cadmium-covered fluence rate monitors, avoiding as much as possible the use of irradiation vials and spacers to position the monitors inside the channel. However, in routine k0-NAA often samples are packed in small polyethylene vials prior to irradiation. This work aims at studying the impact of typical polyethylene vials (1mm wall thickness) on the determination of the f and alpha channel specific parameters through the Bare, Cd-covered and Cd-ratio methods. The impact of these vials on each method was studied for 3 irradiation chanels of the BR1 reactor at SCK-CEN (Mol, Belgium) with low to high f and alpha values. The net impact was 1% on each parameter. Inconsistencies between the different methods were found when the impact of the polyethylene was neglected, implying that all determination methods must be pooled and thin monitors should be used for an accurate channel characterization.
AB - Reactor channel characterization is commonly performed by irradiating bare and cadmium-covered fluence rate monitors, avoiding as much as possible the use of irradiation vials and spacers to position the monitors inside the channel. However, in routine k0-NAA often samples are packed in small polyethylene vials prior to irradiation. This work aims at studying the impact of typical polyethylene vials (1mm wall thickness) on the determination of the f and alpha channel specific parameters through the Bare, Cd-covered and Cd-ratio methods. The impact of these vials on each method was studied for 3 irradiation chanels of the BR1 reactor at SCK-CEN (Mol, Belgium) with low to high f and alpha values. The net impact was 1% on each parameter. Inconsistencies between the different methods were found when the impact of the polyethylene was neglected, implying that all determination methods must be pooled and thin monitors should be used for an accurate channel characterization.
KW - Neutron Activation Analysis
KW - f and alpha determination
KW - k0-NAA
UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_110910
UR - http://knowledgecentre.sckcen.be/so2/bibref/7877
U2 - 10.1007/s10967-010-0783-2
DO - 10.1007/s10967-010-0783-2
M3 - Article
SN - 0236-5731
VL - 286
SP - 569
EP - 575
JO - Journal of Radioanalytical and Nuclear Chemistry
JF - Journal of Radioanalytical and Nuclear Chemistry
IS - 2
T2 - 16th Radiochemical Conference
Y2 - 18 April 2010 through 23 April 2010
ER -