Elsevier

Nuclear Physics A

Volume 183, Issue 1, 20 March 1972, Pages 81-104
Nuclear Physics A

Reaction cross sections for protons in the energy range 220–570 MeV

https://doi.org/10.1016/0375-9474(72)90932-3Get rights and content

Abstract

Proton reaction cross sections have been measured for targets of natural isotopic abundance of the following elements and compounds: H, Be, C, Al, Fe, Cu, Ge, Sn, Pb, H2O, B4C and NaI. Data for proton energies between 220 and 570 MeV have been obtained with two types of transmission-counter assembly. The total errors are of the order of ± 3 %, which is a factor of three better than existing measurements in this energy region. A slight increase of the reaction cross sections with energy is observed for most of the elements studied. The results interpreted in terms of the semi-classical theory of reaction cross section as function of energy clearly demonstrate the onset of pion-production above 250 MeV.

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    Present address: Gustaf Werner Institute, University of Uppsala, Uppsala, Sweden.

    ††

    Present address: University of British Columbia, Vancouver, Canada.

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