Final answer:
A scintillation counter detects and measures radiation using a scintillator that emits light when excited by ionizing radiation, which contradicts the statement about measuring current flow through ionized gas. Statement is False.
Step-by-step explanation:
The statement that a scintillation counter measures the current flow through ionized gas to determine the amount of radiation present is false. Instead, a scintillation counter is an instrument that uses a scintillator, which is a material that emits light when excited by ionizing radiation. The scintillator produces flashes of light in response to the radiation, and these flashes are converted into an electric signal by a sensor, which is then measured. The mentioned function of measuring a current flow through ionized gas is, in fact, a characteristic of the Geiger counter, not a scintillation counter.