| Abstrakt: |
In the case of light-element ions propagating with velocities V = 1.83 and 3.65 au in H2, He, N2, Ne, and Ar, the loss cross sections σi, i+m for m electrons ( m = 1, 2, 3) are considered. The partial loss cross sections σi( nl) for one of the outer 1 s, 2 s, or 2 p electrons are determined using the obtained data. It is shown that the experimental cross sections for the loss of the 1 s and 2 s electrons by positive ions qualitatively agree with the theoretical values calculated in the Born approximation. In the case of the ion velocity V = 1.83 au, the cross sections σi for 2 p electrons are greater than the cross sections σi (1 s) and σi (2 s) by a factor of 1.2–3 for the same binding energies of electrons in the ion ( I nl > 20 eV). It is found experimentally that, at V = 1.83 au, the cross sections σi (2 p) for I nl ∼ 10–20 eV are less than the cross sections σi (1 s) by a factor of 2–3, which is probably caused by a decrease in the screening parameter (θ2 p < 1) of the outer shell of atoms. [ABSTRACT FROM AUTHOR] |
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