3 years ago

Fully differential cross sections for singly ionizing 1-Mev p+He collisions at small momentum transfer: Beyond the first Born approximation.

Yu. V. Popov, A. Galstyan, S. A. Zaytsev, V. L. Shablov, K. A. Kouzakov, O. Chuluunbaatar

We present calculations of the electron angular distributions in the single ionization of helium by 1-MeV proton impact at momentum transfer of 0.75 a.u. and ejected-electron energy of 6.5 eV. The results using the first and second Born approximations and the 3C model with different trial helium functions are compared to the experimental data. A good agreement between theory and experiment is found in the case of the 3C final state and a strongly correlated helium wave function. The electron-electron correlations in the He atom are found to influence the ratio of the binary and recoil peak intensities.

Publisher URL: http://arxiv.org/abs/1710.05353

DOI: arXiv:1710.05353v2

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