The double ionization of He by electron impact at 580 eV has been studied in a coplanar symmetric (e,(31)e) experiment, in which two fast electrons of 250 eV are detected. In this way a momentum transfer as large as 6 a.u. is achieved. The results are compared with the predictions of a theoretical model based on the impulse (knock-out) approximation. The calculations, which include radial correlation of electrons in the He ground state wave function, better describe the experiment than those with an uncorrelated wave function.
Double ionization of He by electron impact at large momentum transfer
P Bolognesi;L Avaldi;
2003
Abstract
The double ionization of He by electron impact at 580 eV has been studied in a coplanar symmetric (e,(31)e) experiment, in which two fast electrons of 250 eV are detected. In this way a momentum transfer as large as 6 a.u. is achieved. The results are compared with the predictions of a theoretical model based on the impulse (knock-out) approximation. The calculations, which include radial correlation of electrons in the He ground state wave function, better describe the experiment than those with an uncorrelated wave function.File in questo prodotto:
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