Assertion: atom's number | /r/HasProperty | generated at particle accelerators
Facets:
value: daily
type: TEMPORAL
Source sentences:
text: Minuscule numbers of antiparticles are generated daily at particle accelerators – total production has been only a few nanograms – and in natural processes like cosmic ray collisions and some types of radioactive decay, but only a tiny fraction of these have successfully been bound together in experiments to form anti-atoms.