A 15-state R-matrix calculation has been carried out at 530 energies ranging from the n =2 threshold up to n =5 threshold at 13. 06 eV to map out the resonant profiles for the n =2 inelastic integral and differential cross sections, and the angular distribution of the spin asymmetry in the inelastic scattering of spin-polarized electrons by the spin-polarized hydrogen atoms at angles 0', 30', 55', 70', 90', 125', and 180' for the 1s~2s transition. The calculations are compared with the experiments and the feasibility studies of using the electron-energy-loss experiments in the investigation of resonances with positions higher than the n =2 threshold have been carried out.
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