[en] A comparison is made of spectra of electrons, which emerge from a silicon target with distinct surface state in small and large solid angles under the action of helium ions with energy up to 10 keV. The spectra in small and large solid angles differ significantly. A comparison of the shape of the ground maximum of such spectra allows to get information about the excited electron distribution. In the high-energy range specific features of a spectrum are more clearly defined when measurements are taken in a small solid angle