2013/09/30 by Sergei P. Maydanyuk, Pengming Zhang, Peng-Ming Zhang
Medicine · Physics and Astronomy · #Atomic and Molecular Physics #Atomic physics #Bremsstrahlung #Electron #Medicine #Nuclear physics #Nuclear physics research studies #Nucleus #Particle physics #Physics #Proton #Quantum Chromodynamics and Particle Interactions #hep-ph #nucl-ex #nucl-th
paper · pdf · doi:10.1103/physrevc.91.024605
published as Phys. Rev. C 91, 024605 (2015) · 25 pages, 8 figures
openalex publication_date 2015/02/11 · arxiv created 2015/03/24 · arxiv updated 2015/03/26 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
A new approach is presented to determine the proton-nucleus interactions from the analysis of the accompanying photon bremsstrahlung. We study the scattering of p+208Pb at the proton incident energies of 140 and 145 MeV, and the scattering of p+12C,\phantom\rule0.16em0exp+58Ni,\phantom\rule0.16em0exp+107Ag, and p+197Au at the proton incident energy of 190 MeV. The model determines contributions of the coherent emission (formed by an interaction between the scattering proton and nucleus as a whole without the internal many-nucleon structure), incoherent emission (formed by interactions between the scattering proton and nucleus with the internal many-nucleon structure), and transition between them in dependence on the photon energy. The radius parameter of the proton-nucleus potential for these reactions is extracted from the experimental bremsstrahlung data analysis. We explain the hump-shaped plateau in the intermediate- and high-energy regions of the spectra by the essential presence of the incoherent emission, while at low energies the coherent emission predominates which produces the logarithmic shape spectrum. We provide our predictions (in absolute scale) for the angular distribution of the bremsstrahlung photons in order to test our model, results, and analysis in further experiments.