close-coupling method

close-coupling method

[‚klōs ′kəp·liŋ ‚meth·əd]
(atomic physics)
A method of approximating the wave function describing a process in which an initially free electron impinges on an isolated atom; in this method, the unknown solution of the Schrödinger equation is expanded in terms of the known wave functions of the target atom.
References in periodicals archive ?
A time-dependent close-coupling method is used to calculate antiproton-impact single ionization, ionization with excitation, and double ionization cross sections for H$_2$ between 5.