A muonic atom is an atom in which a negatively charged muon is captured by a nucleus. To form such an atom, a target material is bombarded with a negative muon beam. The muons suffer successive kinetic energy losses by their interaction with the outer atomic electrons in the target.

What is muonic hydrogen atom?

Muonic hydrogen is an exotic hydrogen atom, where a muon (instead of an electron) orbits the proton. Because the muon is 200 times heavier than the electron, the muon's orbit is 200 times closer to the proton in muonic hydrogen than that of the electron in regular hydrogen.

Are muonic atoms stable?

Muonic atoms should be stable in electron-degenerate matter (white dwarf material) as long as the Fermi energy is more than mμ−me. This is more or less exactly a analogy with neutron stability in the nucleus where the the protons are effectively in a degenerate state.