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Report No.
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Current status of the "Hybrid Kurotama model" for total reaction cross sections

Sihver, L.*; Kohama, Akihisa*; Iida, Kei*; Oyamatsu, Kazuhiro*; Hashimoto, Shintaro; Iwase, Hiroshi*; Niita, Koji*

Accurate calculations of the nucleon + nucleus and nucleus + nucleus total reaction cross sections are of great importance for designing accelerator facilities and estimating dose in particle therapy with particle and heavy ion transport calculations, because the probability of nuclear reactions in the calculations depends on the cross sections. The Kurotama model assumes a target nucleus to be Black Sphere (BS), and gives the total reaction cross sections systematically using its radius determined from proton-nucleus elastic scattering data. However, the BS model breaks down below around 100 MeV/u. In this study, we developed the "hybrid Kurotama" model by connecting the BS model to the semi-empirical model of Tripathi et al. at low energies. The model has been tested against available p + He, p + nucleus, and nucleus + nucleus data and an overall better agreement has been found than for earlier published models. This model is suitable to be used in particle transport calculations.

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