Interpretation and relativistic extension of Bely's approximation for exchange in electron ion collisions
Abstract
It is pointed out that Bely's approximation for exchange in excitation cross sections by electronic collisions is equivalent to considering a contact interaction between free and bound electrons. This allows the corresponding formula for relativistic wavefunctions and for many electron atoms to be obtained and the quality of the approximation to be discussed.
- Publication:
-
Interpretation and relativistic extension of Bely's approximation for exchange in electron ion collisions CEA
- Pub Date:
- April 1981
- Bibcode:
- 1981ireb.rept.....K
- Keywords:
-
- Approximation;
- Electron Scattering;
- Ionic Collisions;
- Relativistic Particles;
- Wave Functions;
- Atomic Excitations;
- Energy Transfer;
- Hamiltonian Functions;
- Atomic and Molecular Physics