I've just recently heard of Positronium, an "element" with interesting properties formed by an electron and positron, and I was shocked to hear that physicists were actually working with this eleme...

Jan 16, 2022 · The positronium is a composite of a particle and an antiparticle.There are experiments with anti-Hydrogen too, Lorentz transformation hold, and the invariant mass does not differ from the …

Mar 6, 2024 · Positronium radius more than expected Ask Question Asked 1 year, 11 months ago Modified 1 year, 11 months ago

I cannot find the answer to the above question. I know that para-positronium is created with a probability of $25\\%$ and decays into 2 photons, while ortho-positronium is created with a probabilit...

Feb 23, 2015 · Positronium consists of an electron and a positron. By what factor is a positronium atom bigger than a hydrogen atom? The solution has been explained to me. The characteristic length …

Jan 11, 2018 · The atomic number is the number of protons. Positronium has no protons, so it definitely cannot have a non-zero atomic number. But positronium is also not an atom and so it cannot even …

Sep 27, 2012 · Since from electron-positron annihilation energy and uncertainty principle,the minimum radius of positronium comes out as half of the compton radius.

Jul 8, 2020 · 1 In positronium, the electron and positron can be anti-parallel which gives us a total spin = 0. And for electron and positron parallel we have a total spin 1. Is my reasoning correct if i say : In …

Dec 9, 2022 · For positronium there is a simple Feynman diagram as shown below Would the same diagram work for a scalar charged particle-antiparticle bound state? Unfortunately, if we try to apply …

Feb 7, 2024 · 4 Positronium is an atom with one electron and one positron. It's mass is 1.022MeV which is almost twice the electron mass: The ground-state (1S orbital) binding energy of -6.8eV reduces the …