Zero-Energy Resonance Effects in Break-up Collisions
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.
KeywordsDouble Differential Cross Section Distortion Factor Proton Impact Laboratory Reference Frame Threshold Structure
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- 4.R. O. Barrachina, J. Fiol, V. D. Rodríguez, P. Macri: Cusp formation and threshold effects in break-up collisions in Y. Itikawa et al. (eds.): The Physics of Electronic and Atomic Collisions p. 510, New York, American Institute of Physics 2000Google Scholar
- 8.Th. Weber et al.: (to be published)Google Scholar
- 9.J. Fiol, C. Courbin, V. D. Rodríguez, R. O. Barrachina: J. Phys. B (in print)Google Scholar
- 10.E. P. Wigner: Rev. Mod. Phys. 73, 853 (1953)Google Scholar
- 12.P. Macri, R. O. Barrachina: (to be published)Google Scholar
- 17.R. Vidal, P. Focke, E. González Lepera, I. B. Nemirovsky, W. Meckbach: XIII ICPEAC, Berlin, 2000Google Scholar