Improved impulse approximation for ionization collisions between atoms
Journal Article
·
· Phys. Rev., A; (United States)
By taking as an example ionization collisions between atoms with simultaneous excitation of one of the atoms, a mutual relation between the impulse and the semi-quantum-mechanical approximation is made clear in the case in which the electron-atom scattering amplitude is a function only of the momentum transfer. An improved impulse approximation is proposed, which employs the smallest number of assumptions among the various formulas and has an advantage of practical usefulness. It is shown that the formula can be simplified to a single integral if an average of the cross section is taken with respect to the initial azimuthal quantum number of an atom to be ionized.
- Research Organization:
- Service de Physique Atomique, Centre d'Etudes Nucleaires de Saclay, 91190 Gif-sur-Yvette, France
- OSTI ID:
- 6825958
- Journal Information:
- Phys. Rev., A; (United States), Vol. 17:6
- Country of Publication:
- United States
- Language:
- English
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