FIRST-ORDER EXCHANGE APPROXIMATION
Journal Article
·
· Proc. Roy. Soc. (London) Ser. A
It is shown that when the Born approximation is applied to rearrangement collisions in the customary way, terms of the first order in the interaction energy between the colliding particles are omitted from the exchange scattering amplitude. If these terms are retained the arbitrariness which arises from the lack of orthogonality between the initial and final state wave functions is removed. The firstorder exchange approximation derived is employed to calculate the cross sections for the 1s-2s and 1s-2p excitations of hydrogen atoms by electron impact and the elastic scattering of electrons by hydrogen atoms. (auth)
- Research Organization:
- Queen's Univ., Belfast
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-18-005941
- OSTI ID:
- 4132711
- Journal Information:
- Proc. Roy. Soc. (London) Ser. A, Journal Name: Proc. Roy. Soc. (London) Ser. A Vol. Vol: 276
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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