Abstract
The $^{208}\mathrm{Pb}(n, \ensuremath{\gamma})^{209}\mathrm{Pb}$ activation cross section has been measured in the energy range relevant to stellar nucleosynthesis. A large-area, low-background $\ensuremath{\beta}$-ray counting system was developed to obtain sufficient sensitivity. Information on the radiative widths of the known resonances below 120 keV was derived. The cross-section average found for the Maxwellian temperature distribution assumed for a stellar interior ($kT=30$ keV) is $\frac{1}{3}$ mb. This value is quite compatible with expectations based on current nucleosynthesis theory.
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