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The total neutron cross section of Eu151 has been measured in the energy range from 0.10 to 1.00 ev, using samples of high isotopic purity. The parameters for the double resonance, which occurs at 0.321 and 0.460 ev, have been derived by fitting the data to the sum of two single-level Breit-Wigner expressions.
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Tassan et al. (1961) studied this question.
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