Charge exchange transition probability for collisions between unlike ions and atoms within the adiabatic approximation

Mathematics – Probability

Scientific paper

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Charge Exchange, Electron Transfer, Ion Atom Interactions, Resonance Charge Exchange, Transition Probabilities, Beryllium, Cross Sections, Electron Transitions, Hydrogen Ions, Kinetic Energy, Lithium

Scientific paper

A simple formula for the transition probability for electron exchange between unlike ions and atoms is established within the adiabatic approximation by employing the Linear Combination of Atomic Orbitals (LCAO) method. The formula also involves an adiabatic parameter, introduced by Massey, and thus the difficulties arising from the internal energy defect and the adiabatic approximation are avoided. Specific reactions Li(+++) + H to Li(++) + H(+) and Be(4+) + H to Be(3+) + H(+) are considered as examples. The calculated capture cross section results of the present work are compared with the experimental data and with the calculation of other authors over the velocity range of 10(7) cm/sec to 10(8) cm/sec.

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