Please use this identifier to cite or link to this item:
http://acervodigital.unesp.br/handle/11449/23480
- Title:
- Collision of positronium with atoms, molecules and ions using a modified coupled-channel framework
- Biswas, P. K.
- Universidade Estadual Paulista (UNESP)
- 0168-583X
- Scattering of positronium (Ps) from atoms (H, He, Ne, Ar), molecule (H(2)) and ion (He(+)) have been investigated using a coupled-channel (CC) formalism with a regularised non-local exchange potential. The advantage of using such a regularized exchange potential in the close-coupling formalism and the normalizability aspect of the solution at low energies with a minimum effective coupling are discussed. Results for the elastic and total scattering cross-sections, resonance and binding energies in Ps-H, and pick-off annihilation results in Ps-He are found to be in excellent agreement with measurements and variational predictions. (C) 2000 Elsevier B.V. B.V. All rights reserved.
- 1-Aug-2000
- Nuclear Instruments & Methods In Physics Research Section B-beam Interactions With Materials and Atoms. Amsterdam: Elsevier B.V., v. 171, n. 1-2, p. 135-144, 2000.
- 135-144
- Elsevier B.V.
- http://dx.doi.org/10.1016/S0168-583X(00)00161-0
- Acesso restrito
- outro
- http://repositorio.unesp.br/handle/11449/23480
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