Abstract
The standard interpretation of the adiabatic approach and the t matrix method for the calculation of the probabilities of nonadiabatic transitions and inelastic cross sections in atomic collisions is analyzed, and a model problem of collisions of hydrogen atoms with neutrons is considered. It is shown that the application of the standard approach results in a physically inconsistent result—considerable values of the excitation cross sections of hydrogen atoms by neutrons. The application of the t matrix method improves the result by two to three orders of magnitude even for a restricted basis set.
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