Statements (22)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
exotic atom
|
| gptkbp:annihilationProduct |
photons
|
| gptkbp:antimatterComponent |
positron
|
| gptkbp:bindingEnergy |
6.8 eV
|
| gptkbp:category |
gptkb:leptonium
|
| gptkbp:charge |
neutral
|
| gptkbp:composedOf |
electron
positron |
| gptkbp:decaysTo |
gptkb:gamma_rays
|
| gptkbp:discoveredBy |
gptkb:Martin_Deutsch
|
| gptkbp:discoveredIn |
1951
|
| https://www.w3.org/2000/01/rdf-schema#label |
positronium
|
| gptkbp:lifespan |
125 ps (ortho-positronium)
142 ns (para-positronium) |
| gptkbp:mass |
1.022 MeV/c^2
|
| gptkbp:matterComponent |
electron
|
| gptkbp:spinStates |
gptkb:ortho-positronium
gptkb:para-positronium |
| gptkbp:studiedIn |
quantum electrodynamics
|
| gptkbp:symbol |
gptkb:Ps
|
| gptkbp:bfsParent |
gptkb:AEgIS_experiment
|
| gptkbp:bfsLayer |
5
|