4.4 Conclusion
Numerical validation for application of the self-indication method has been carried
out. As a result, the self-indication method is shown to have a better S/N than the
neutron transmission method to quantify the amount of target nuclides.
The present method can be applied to identify and quantify a nuclide that has a
small resonance, i.e.,
129 I, and it is shown that one can measure an intended signal
with good S/N by using an impure indicator. In addition, if the sample contains a
highly concentrated neutron absorber, one can identify and quantify the target
nuclide by using the self-indication method. Thus, the self-indication method can
be applied to analyze the fuel debris in Fukushima Daiichi NPP.
Acknowledgments This work was supported by JSPS KAKENHI Grant Number 24760714.
Open Access This chapter is distributed under the terms of the Creative Commons Attribution
Noncommercial License, which permits any noncommercial use, distribution, and reproduction in
any medium, provided the original author(s) and source are credited.
References
1. Working Party on Physics of plutonium fuels and innovative fuel cycles (2003) Physics of
Plutonium fuels BWR MOX benchmark specification and results. OECD/NEA, ISBN: 92-6419905-5
2. Okumura K et al (2007) SRAC 2006: a comprehensive neutronics calculation code system.
JAEA-Data/Code, 2007–004
3. Shibata K et al (2011) JENDL-4.0: a new library for nuclear science and engineering. J Nucl Sci
Technol 48(1):1–30
4. Nagaya Y et al (2005) MVP/GMVP II: general purpose Monte Carlo codes for neutron and
photon transport calculations based on continuous energy and multigroup methods. JAERI
1348, Japan Atomic Energy Research Institute
4 Development of Nondestructive Assay of Fuel Debris of Fukushima Daiichi. . .
37
Numerical validation for application of the self-indication method has been carried
out. As a result, the self-indication method is shown to have a better S/N than the
neutron transmission method to quantify the amount of target nuclides.
The present method can be applied to identify and quantify a nuclide that has a
small resonance, i.e.,
129 I, and it is shown that one can measure an intended signal
with good S/N by using an impure indicator. In addition, if the sample contains a
highly concentrated neutron absorber, one can identify and quantify the target
nuclide by using the self-indication method. Thus, the self-indication method can
be applied to analyze the fuel debris in Fukushima Daiichi NPP.
Acknowledgments This work was supported by JSPS KAKENHI Grant Number 24760714.
Open Access This chapter is distributed under the terms of the Creative Commons Attribution
Noncommercial License, which permits any noncommercial use, distribution, and reproduction in
any medium, provided the original author(s) and source are credited.
References
1. Working Party on Physics of plutonium fuels and innovative fuel cycles (2003) Physics of
Plutonium fuels BWR MOX benchmark specification and results. OECD/NEA, ISBN: 92-6419905-5
2. Okumura K et al (2007) SRAC 2006: a comprehensive neutronics calculation code system.
JAEA-Data/Code, 2007–004
3. Shibata K et al (2011) JENDL-4.0: a new library for nuclear science and engineering. J Nucl Sci
Technol 48(1):1–30
4. Nagaya Y et al (2005) MVP/GMVP II: general purpose Monte Carlo codes for neutron and
photon transport calculations based on continuous energy and multigroup methods. JAERI
1348, Japan Atomic Energy Research Institute
4 Development of Nondestructive Assay of Fuel Debris of Fukushima Daiichi. . .
37