This work is focused on the nat Pb(p,xn) 207 Bi reaction to extend earlier works on proton induced reactions for the determination of cross sections of residual nuclides. 207 Bi decay (half-life 31.55 years) was measured by γ-ray spectrometry in 42 lead foils which had been irradiated by high proton fluxes 20 years ago. Since then, all short-lived radionuclides produced during the irradiation have decayed, so the background is strongly reduced and the cross section could be measured more precisely than during the original measurements. The results are found to be in very good agreement with the historical record. Additionally, theoretical calculations with modern Monte Carlo based codes were performed to compare the calculations of various Bi, Tl and Pb reactions with the historical data and with additional data from literature. The deviations of the new data from both theoretical calculations using EMPIRE and TALYS are discussed.

中文翻译：

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再谈质子在10 MeV到80 MeV之间引起的质子诱导反应的截面

这项工作的重点是nat Pb（p，xn）207 Bi反应，以扩展质子诱导反应的早期工作，以测定残留核素的截面。在20年前用高质子通量照射过的42个铅箔中，用γ射线光谱法测得207 Bi衰变（半衰期31.55年）。从那时起，在辐照过程中产生的所有短寿命放射性核素都已衰变，因此背景被大大减小，与原始测量相比，可以更精确地测量横截面。发现结果与历史记录非常吻合。另外，进行了基于现代蒙特卡洛法则的理论计算，以将各种Bi，Tl和Pb反应的计算结果与历史数据以及文献中的其他数据进行比较。