Abstract
We show that the analysis of cusp and threshold structures in breakup collisions of nuclei, atoms and molecules represents an alternative approach for the study of elastic two-particles collisions at extremely low-energies. We illustrate these general ideas by showing that the “electron capture to the continuum” cusp in the ionization of atoms by neutral projectiles can be understood in terms of a resonance mechanism. This approach allows for the extraction of the s-wave scattering length for the electron-projectile interaction.
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Fiol, J., Courbin, C., Rodríguez, V.D., Barrachina, R.O. (2001). Zero-Energy Resonance Effects in Break-up Collisions. In: Kruppa, A.T., Lovas, R.G. (eds) Resonances in Few-Body Systems. Few Body Systems, vol 13. Springer, Vienna. https://doi.org/10.1007/978-3-7091-6114-2_5
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DOI: https://doi.org/10.1007/978-3-7091-6114-2_5
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