Abstract
We present an alternative approach for the study of a break-up process at threshold. Specifically, we demonstrate that the single differential cross section of one particle in a few-body system carries basic information about the breakup threshold of the remaining cluster. Thus, it represents an alternative approach for the study of few-body continua at very low energies. We exemplify these ideas by analyzing the particular case of a three-body system. In particular, we show that it is possible to extract electron-atom scattering parameters, such as the s-wave scattering length from ionization measurements.
Member of Comisión Nacional de Energía Atómica (CNEA) and Universidad Nacional de Cuyo (UNC), Argentina. Also member of the Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina.
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Barrachina, R.O. (2003). Effects of Breakup Thresholds in the Single-Particle Momentum Distributions of a Few-Body Continuum. In: Krivec, R., Rosina, M., Golli, B., Širca, S. (eds) Few-Body Problems in Physics ’02. Few-Body Systems, vol 14. Springer, Vienna. https://doi.org/10.1007/978-3-7091-6728-1_38
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DOI: https://doi.org/10.1007/978-3-7091-6728-1_38
Publisher Name: Springer, Vienna
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