What is the binding energy of positronium compared to hydrogen?

[drewhart]

hello everyone. what is positronium, and how can its binding energy be deduced from the fact that the binding energy of hydrogen is 13.6 Mev?

 

[meganw]

Positronium (Ps) is a system consisting of an electron and its anti-particle, a positron, bound together into an "exotic atom". The orbit of the two particles and the set of energy levels is similar to that of the hydrogen atom (electron and proton). However, because of the lower reduced mass, the frequencies associated with the spectral lines are less than half of those of the corresponding hydrogen lines.

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