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Theoretical initial l dependence of ion-Rydberg-atom collision cross sections

R L Becker and A D MacKellar

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Classical trajectory Monte Carlo calculations have been performed for ion-atom collisions in the velocity matching region for target Rydberg states of given specific n and l. A classical ensemble derived previously is used, which corresponds to the set of hydrogenic quantum states of fixed n and l. Substantial dependence on the initial l value is found for charge transfer, ionisation, and excitation cross sections. For charge transfer, the distributions over the final n' show peaks in substantial agreement with a recent experiment of Rolfes and MacAdam (1982). Experimental data for the other processes are not yet available.


PACS

34.10.+x General theories and models of atomic and molecular collisions and interactions (including statistical theories, transition state, stochastic and trajectory models, etc.)

34.50.Fa Electronic excitation and ionization of atoms (including beam-foil excitation and ionization)

34.70.+e Charge transfer

34.50.-s Scattering of atoms and molecules

Subjects

Atomic and molecular physics

Dates

Issue 19 (14 October 1984)



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