Neutron flux characterization techniques for radiation effects studies
- 103 Downloads
In the field of radiation effects in materials, a detailed and precise description of the radiation environment used to damage samples is often required to make sense of subsequent materials analysis. The types of reactions and extent of damage that occur during irradiation strongly depend on the flux spectrum of the particular facility. Different neutron activation techniques for characterizing neutron flux spectra were performed on the University of Texas at Austin TRIGA research reactor’s in-core facilities. The results were compared in terms of spectral detail and precision. Activation of Au foils with multiple correction factors, and multiple foil activation employing different deconvolution techniques comprise the methods tested.
KeywordsNeutron flux Radiation effects Activation Foils
This work is supported, in part, by the National Institute of Nano Engineering and the Laboratory Directed Research and Development program at Sandia National Laboratories. Sandia is a multi-program laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the U.S. Department of Energy under contract DE-AC04-94AL85000.
- 1.Stoughton RW, Halperin J (1959) Nucl Sci Eng 6:100Google Scholar
- 2.ASTM E262-08 (2003) Standard test method for determining thermal neutron reaction rates and thermal neutron fluence rates by radioactivation techniques. doi: 10.1520/E0262-03
- 3.Gold R (1964) Nucl Sci Eng 20:493Google Scholar
- 4.Di Cola G, Rota A (1965) Nucl Sci Eng 23:344Google Scholar
- 6.ASTM E722-09 (2009) Standard practice for characterizing neutron fluence spectra in terms of an equivalent monoenergetic neutron fluence for radiation-hardness testing of electronics. doi: 10.1520/E0722-09E01