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Theoretical determination of the effective cross sections of lithium atom by the electron impact
P.S. Zhvirblis, E.P. Nashlenas
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Abstract
The cross sections of excitation of a lithium atom by the electron impact are calculated using the first Born's approximation for transitions 2s - 2p, 2s - 3d, 2p - 3d. The radial orbitals used were found by the extended method of calculation. The calculated cross sections of excitation and those obtained previously are compared. The effects of the extended method of calculation for cross sections of excitation of lithium and helium atoms are compared. (auth)