And as they do, they knock electrons off other atoms, in what’s called a Townsend avalanche.
当它们这样做时， 它们将电子从其他原子上撞下来， 这就是所谓的汤森雪崩。
Townsend avalanche
原声例句
SciSHow 快问快答小科普
英语百科
Townsend discharge
（重定向自Townsend avalanche）
The Townsend discharge or Townsend avalanche is a gas ionisation process where free electrons are accelerated by an electric field, collide with gas molecules, and consequently free additional electrons. Those electrons are in turn accelerated and free additional electrons. The result is an avalanche multiplication that permits electrical conduction through the gas. The discharge requires a source of free electrons and a significant electric field; without both, the phenomenon does not occur.
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