Recent Analytical Studies by Using INAA/PGAA/DNAA in KAERI
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This presentation aimed at introducing recent analytical activities of instruments and application studies by using INAA/PGAA/DNAA in KAERI, Korea. The first topic is the studies related to INAA in terms of implementation of Compton suppression system (CSS) and homogeneity test for contaminated soil samples as a candidate reference material. As a major result of CSS implementation, 60% of background reduction can be achieved by the measurement of NIST SRM 2711-Montana Soil. One way ANOVA test was performed to determine homogeneity between within-bottle and between bottle samples. Five elements such as Na, As, Fe, Co and Th which have big signal to noise ratio, were selected for the homogeneity test. Except for Fe, the other elements have no significance in 95% of confidence level. The second topic is the application studies by using DNAA. A variety of environmental samples such as sediment, incinerator ash, coal fly ash, sewage sludge and air particulates, have been collected during the past years. DNAA was applied to determine U contents in those environmental samples. Conclusively, it is demonstrated that U contents of ppm level can be determined effectively by DNAA. The third topic is thermal neutron PGAA. Main activities of PGAA were the implementation of k_0-PGAA. Nuclear data like partial gamma-ray cross section and k0,H were measured by using PGAA in HANARO. As results of the comparison with literature values, they are agreed well within 2% of relative error. As a final topic, the future plan in which NAA group in KAERI is promoting to build the facilities with respect to Cold neutron PGAA, NDP and PGI was briefly introduced.
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関連論文
- Recent Analytical Studies by Using INAA/PGAA/DNAA in KAERI
- Applications of PGAA at HANARO Research Reactor
- PGAA Facility in the HANARO Research Reactor of Korea
- Utilization and Facilities for a Neutron Activation Analysis at the HANARO Research Reactor in Korea
- Current Activities of Instrumental Neutron Activation Applications in KAERI