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arXiv · 1409.6518

Scattering properties of the $2e^-2e^+$ polyelectronic system

K. M. Daily·Javier von Stecher·Chris H. Greene
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Abstract

We study the $2e^-2e^+$ equal-mass charge-neutral four-body system in the adiabatic hyperspherical framework. The lowest few adiabatic potentials are calculated for zero orbital angular momentum, positive parity, and charge conjugation symmetries. Propagating the R-matrix, the low-energy $s$-wave scattering lengths of the singlet-singlet and triplet-triplet spin configurations are calculated. Lastly, we calculate the S-matrix for energies above the ionic threshold to estimate the transition rates between the single ionic fragmentation channel and the lowest few dimer-dimer fragmentation channels.

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K. M. Daily, Javier von Stecher, Chris H. Greene. 2014-09-23. Scattering properties of the $2e^-2e^+$ polyelectronic system. https://doi.org/10.1103/physreva.91.012512

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