Assertion: ion's electron | /r/HasProperty | given sufficient energy
Facets:
value: by the electric field
type: OTHER
value: to release further electrons
type: PURPOSE
Source sentences:
text: The Geiger–Müller tube and the proportional counter both use a phenomenon known as a Townsend avalanche to multiply the effect of the original ionizing event by means of a cascade effect whereby the free electrons are given sufficient energy by the electric field to release further electrons by ion impact.