Penning ionization
type: Concept
preferred label: یونش محدود @fa
related: Penning discharge

Penning discharge
type: Concept
broader: discharge (electric)
preferred label: تخلیه محدود @fa
related: Penning ionization

discharge (electric)
type: Concept
narrower: Penning discharge
preferred label: تخلیه (الکتریکی) @fa