Measurement of excitation functions for natPb(p,xn)199,200,201Pb reactions with stacked foil activation technique at KOMAC


The excitation functions of natPb(p,xn)199,200,201Pb reactions within the proton energy of 71.5 - 91.7 MeV were measured by using the 100-MeV linear accelerator at the Korea Multi-Purpose Accelerator Complex (KOMAC). The stacked foil activation and off-line gamma-ray spectrometric technique was used in the present study. The 27Al(p, 3p + n)24Na monitor reaction was used to estimate the proton flux. The excitation functions of natPb(p, xn)199,200,201Pb reactions were derived from the photo-peak activities of delayed γ-rays of the produced nuclei. The present results have been compared with the literature data and the theoretical values from TENDL-2015 library. The natPb(p,xn)199,201Pb reaction cross-sections at the proton energy of 91.7 MeV has been measured for the first time, whereas for the proton energies of 71.5 - 84.5 MeV are in general agreement with the literature data within limits of uncertainty. Overall, the experimental data from the present work and literature show increase trend with proton energy similar to the theoretical values of TENDL-2015 library with some systematic differences.

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Correspondence to Samyol Lee.

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Lee, J., Yoon, J., Ro, T. et al. Measurement of excitation functions for natPb(p,xn)199,200,201Pb reactions with stacked foil activation technique at KOMAC. Journal of the Korean Physical Society 72, 228–233 (2018).

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  • natPb(p,xn)199,200,201Pb reactions
  • Excitation function
  • Stacked-foil activation
  • Off-line γ-ray spectrometry
  • 100-MeV proton beam
  • TENDL-2015