Extracting low-energy electron-atom scattering parameters from ionic measurements
We analyze different methods to extract from ionic measurements electron-atom scattering parameters, such as the scattering length. Different generalizations of O'Malley et al.'s modified effective range theory, such as for instance Fabrikant's approach or the multichannel theory of W...
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2003
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Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0168583X_v205_n_p543_Macri http://hdl.handle.net/20.500.12110/paper_0168583X_v205_n_p543_Macri |
Aporte de: |
Sumario: | We analyze different methods to extract from ionic measurements electron-atom scattering parameters, such as the scattering length. Different generalizations of O'Malley et al.'s modified effective range theory, such as for instance Fabrikant's approach or the multichannel theory of Watanabe and Greene, are used in the literature to fit the experimental data. In this communication we propose a different approach that provides a significant improvement over other methods on a much broader range of energies. We discuss its applicability in the case of negative ion photodetachment and in coincidence measurements of electron capture and loss to the continuum in atomic collisions. © 2003 Elsevier Science B.V. All rights reserved. |
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