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The cross section for the reaction Pr¹⁴¹(γ,n)Pr¹⁴⁰ has been measured through 65 MeV. Yield curves of Pr¹⁴⁰ radioactivity were analyzed by least-structure analysis. Eleven distinct resonances are resolved below 25 MeV with a total integrated cross section to 30 MeV of 1790±{}100 MeV mb. The cross section falls to zero in the region of 30 MeV and rises slightly with no resolved structure above 35 MeV. The integrated cross section from 30 to 65 MeV is 440 MeV mb.
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Cook et al. (1966) studied this question.
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