Definition & Betydelse | Engelska ordet POSITRONIUM

Definition av POSITRONIUM

1. (partikelfysik) positronium

Exempel på hur man kan använda POSITRONIUM i en mening

• Caswell and Peter Lepage did significant work in 1978 to develop new and powerful tools for dealing with bound states such as positronium and charmonium.
• Examples include positronium (bound state of an electron–positron pair), excitons (bound states of an electron–hole pairs), and mesons (as quark-antiquark bound states).
• Other systems may also be referred to as "hydrogen-like atoms", such as muonium (an electron orbiting an antimuon), positronium (an electron and a positron), certain exotic atoms (formed with other particles), or Rydberg atoms (in which one electron is in such a high energy state that it sees the rest of the atom effectively as a point charge).
• The true analogs of positronium in the theory of strong interactions are the quarkonium states: they are mesons made of a heavy quark and antiquark (namely, charmonium and bottomonium).
• The TBDE can be readily applied to two body systems such as positronium, muonium, hydrogen-like atoms, quarkonium, and the two-nucleon system.

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