Thermal-Neutron Spectrum Measurements By Foil Activation

H. Ibarra; Jr. and R. Sher

doi:dx.doi.org/10.13182/NSE67-A17806

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Home / Publications / Journals / Nuclear Science and Engineering / Volume 29 / Number 1

Thermal-Neutron Spectrum Measurements By Foil Activation

H. Ibarra, Jr. and R. Sher

Nuclear Science and Engineering / Volume 29 / Number 1 / July 1967 / Pages 15-27

Technical Paper / dx.doi.org/10.13182/NSE67-A17806

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An experimental method for the measurement of thermal-neutron spectra by neutron-induced radioactivities in selected isotopes is described. Criteria from theoretical and experimental considerations are developed and applied for the selection of such detectors. The applications and limitations of the method are discussed. The experimental technique has been applied to investigate neutron spectra in borated H₂O solutions, using four detectors: ¹⁶⁴Dy, ¹⁷⁶Lu, ¹⁵¹Eu, and ¹⁹⁷Au. The spectra obtained are in good agreement with the known spectra.